Ácido indolbutírico no enraizamento de estacas de Fuchsia spp.

cr Ciência Rural Cienc. Rural 0103-8478 1678-4596 Universidade Federal de Santa Maria RESUMO: O brinco-de-princesa é uma planta ornamental nativa da região Sul do Brasil, muito apreciada devido a beleza de suas flores pendentes e coloridas. O presente trabalho foi realizado com o objetivo de avaliar o efeito de diferentes doses de auxina sintética ácido indolbutírico (IBA) no enraizamento de estacas herbáceas de Fuchsia regia (Vell.) Munz, espécie nativa, e Fuchsia hybrida Hort. Ex Siebert & Voss variedade comercial ‘General Monk Red Blue’. O experimento foi conduzido em casa-de-vegetação e o delineamento experimental foi em blocos ao acaso com arranjo fatorial 2x5 (dois genótipos de Fuchsia x cinco tratamentos). Os tratamentos consistiram em controle, e doses de IBA (mg.L-1) (0, 200, 400, 600 e 800). As avaliações foram feitas 20 dias após o estaqueamento. Os parâmetros avaliados foram: comprimento da maior raiz, número de raízes formadas por estaca, massa fresca e massa seca da parte aérea e das raízes. A concentração de 800 mg.L-1 de ácido indolbutírico resultou em maior enraizamento das estacas de ambos os materiais de Fuchsia testados. Portanto, o uso de IBA (800 mg.L-1) proporcionou a obtenção de mudas enraizadas de melhor qualidade, maior comprimento e número de raízes. INTRODUCTION: The ornamental plant market drives the demands for new products and the search for information related to the cultivation and propagation of species. Thus, the creation of new varieties with morphological and/or physiological improvements such as flower pigmentation and disease resistance; respectively, is economically important to increase this market segment (ALCANTARA et al., 2008; CORADIN et al., 2011; NOMAN et al, 2017). The princess earring (Fuchsia spp.) is an ornamental plant native to South America and has about 8,000 hybrids and cultivars around the world (BRICKELL, 1996). Internationally, Fuchsia is widely appreciated and cultivated in the European Community, where there are associations of growers, such as Euro-Fuchsia, composed by members from Austria, Germany, Holland, France, Ireland, Switzerland, United Kingdom, Norway and Denmark (EURO-FUCHSIA, 2018). Fuchsias are highly appreciated due to the beauty of their flowers, which can be single, semi-double or double. They are often bicolored and have contrasting colors of their petals and sepals, which can be purple, magenta, pink or white (BRICKELL, 2011). Fuchsias are better adapted to cold climates, are frost-tolerant and can grow in full sun or partial shade (LORENZI & SOUZA, 2008). In Brazil, it is considered the symbol flower of the state of Rio Grande do Sul (Decreto nº 38.400 da Assembleia Legislativa do Rio Grande do Sul, 1998). The princess earring has a broad range of uses in landscaping. Varieties can be found for planting in pots and in gardens, representing an expressive economic potential (BERRY, 1982, 1989; CORADIN et al., 2011). Establish practices of production for native plants with ornamental potential, like Fuchsias, can be a competitive advantage in a market increasingly inclined to products with reduced environmental impact (HEIDEN et al., 2006). Furthermore, princess earring production constitutes a suitable alternative for small and medium scale farmers, due to its profitability and the small land area required (TOMBOLATO, 2008; JUNQUEIRA & PEETZ, 2017). These plants can be propagated by seeds or by stem cuttings (LORENZI & SOUZA, 2008). The cutting method has proved to be the most effective alternative for the propagation of ornamental plants on a commercial scale, as it provides the formation of cuttings quickly and easily, in large quantities and at low cost (HARTMANN et al., 2002; MAZZINI, 2012; EMER et al., 2016). In addition, this technique ensures the production of cuttings genetically identical to the parent plant (CAMPOS & PETRY, 2009). There are a variety of exogenous and endogenous factors that influences the rooting process in cuttings. Among the endogenous factors, phytohormones are critical. Its functions include stimulation of adventitious roots growth, activation of cambial cells, inhibition of lateral buds emissions, abscission of leaves and fruits and promotion of plant growth (FACHINELLO et al, 2005). In this context, the auxins can play key role on vegetative propagation (FACHINELLO et al, 2005). The application of synthetic auxins at the base of plant cuttings, such as indolebutyric acid (IBA), naphthaleneacetic acid (NAA) and indoleacetic acid (IAA) can promote the increased number of roots per cutting, an acceleration of root formation and a greater uniformity of the root system (HARTMANN, 2002; GRATIERI-SOSSELLA et al., 2008; MAZZINI, 2012; MENEGAES et al., 2017). Currently, IBA is the synthetic auxin most frequently used in vegetative propagation through cuttings (HARTMANN et al., 2002; EMER et al., 2016), as it has greater solubility and stability compared to IAA and NAA (LIMA et al., 2017). In addition, it is photostable, less sensitive to biological degradation, non-toxic in a wide range of concentrations and applicable to a wide variety of plant species (HARTMANN, 2002; FACHINELLO et al., 2005; GRATIERI-SOSSELLA et al., 2008). Considering that Fuchsia has a relevant importance in the ornamental plant market, and the lack of information about techniques to improve its propagation, the present research evaluated the effect of different doses of synthetic indolebutyric acid (IBA) in the rooting of cuttings from two genotypes of Fuchsia: F. regia (Vell.) Munz and F. hybrida Hort. Ex Siebert & Voss ‘General Monk Red Blue’ variety. MATERIALS AND METHODS: The experiment was carried out in the Experimental sector of the Horticulture Pavilion of the Vegetable Production Department of the ‘Luiz de Queiroz’ College of Agriculture - University of Sao Paulo (ESALQ / USP) (22º 42 ‘S, 47º 38’ W, altitude 546 m) in Piracicaba, state of Sao Paulo, Brazil. For this study, cuttings of two Fuchsia genotypes were evaluated: Fuchsia regia (Vell.) Munz, ‘native’ species and Fuchsia hybrida Hort. Ex Siebert & Voss var. ‘General Monk Red Blue’. According to LORENZI & SOUZA (2008), F. regia (Vell.) Munz is native to high-altitude regions of Brazil, characterized by being a hardy branched bush, with a height from 1.5 to 3 meters and hanging branches with simple and oval leaves in addition to the axillary flowers, with a purple-red tubular chalice and purple-violet petals, and are attractive to the local fauna. F. hybrida Hort. Ex Siebert & Voss var. ‘General Monk Red Blue’ is a commercial variety obtained through genetic crossing, and is characterized by its herbaceous size, erect branches and showy tubular chalice flowers, dark pink and dark violet corolla, double (LAZZERI, 2018), formed mainly in the spring summer period. Cuttings with 5 cm in length were selected from the apical region of the branches, containing two axillary buds and keeping the leaves of the apical portion of the cutting. To avoid the loss of turgor of the plant material, the time period between cut off branches and make the cuttings was as short as possible. A randomized block design with a 2x5 factorial arrangement was used for evaluate the response of five IBA doses in two genotypes of Fuchsia, totalizing ten treatments. They were evaluated in four replications with eight cuttings each. The doses of IBA evaluated were: 0 (control), 200, 400, 600 and 800 mg.L-1. The basal end of the cuttings was soaked in different concentration of 50% hydroalcoholic IBA solution for 10 seconds (PRETI et al., 2012) and placed in cutting starter trays filled with Vida Verde® coconut fiber substrate. After staking, the trays were kept in a greenhouse with intermittent mist system, controlled by a relative humidity and temperature monitoring system, which was set to operate at 70% relative humidity. The average temperature in the greenhouse was 25,3º C. The evaluation was performed 20 days after staking. The evaluated parameters were: length of the largest root (LLR), number of roots formed per cutting (NR), root fresh mass (RFM) and root dry mass (RDM), shoot fresh mass (SFM) and shoot dry mass (SDM). For the evaluation of roots and shoots fresh mass, the part of the roots was removed from the first adventitious root formed at the base of the cutting, in order to isolate them from the aerial part. Then, shoots and roots of the cuttings were weighted on a semi-analytical scale. To obtain the dry mass, the roots and shoots were placed in an oven for a period of approximately 5 hours and temperature of 65ºC, until constant weight. After that, the dry mass of roots and shoots were weighted. The analysis of variance (ANOVA) and the Tukey test at 5% significance were performed using the “SAS Studio” statistical package (SAS INSTITUTE, 2018). RESULTS: The ANOVA revealed that there were highly significant differences (P ≤ 0.01) between genotypes and between IBA levels regarding the length of the largest root (LLR), number of roots (NR), roots fresh mass (RFM) and root dry mass (RDM) after the application of the treatments with IBA (Table 1). All of the parameters evaluated except SFM showed highly significant effect of, at least, one IBA dose. The interaction between genotypes and doses were significant for most of the parameters evaluated. These results indicated that there are differences in the potential of rooting between genotypes. The rooting response can be also due to different doses and their differential effect on each genotype. Table 1 Summary of the analysis of variance, with degrees of freedom (DF), mean squares (MS), coefficients of variation (CV) and general average of length of the largest root (LLR), number of roots formed per cutting (NR),shoot fresh mass (SFM), root fresh mass (RFM), root dry mass (RDM)) and shoot dry mass (SDM) for genotypes of Fuchsia spp., submitted to different doses of indolebutyric acid (IBA)(ESALQ/USP, Piracicaba, SP, 2018). Source of variation DF -----------------------------------------------------MS----------------------------------------------------- LLR (cm) NR RFM (g) SFM (g) RDM (g) SDM (g) Genotypes (G) 1 1.66** 701.99** 18.95** 0.62n.s 0.06** 1.79n.s IBA doses (D) 4 1.45** 176.43** 3.79** 1.17n.s 0.02** 0.02** G x D 4 0.45** 73.22** 0.51* 0,46n.s 0.002n.s 0.02** Residuals 30 0.09 3.67 0.19 0.69 0.002 0.69 Total 39 - - - - - - CV (%) 9.04 9.54 15.23 13.68 15.51 15.11 Average (g) 3.49 20.06 2,84 6.09 0.25 1.08 F test: n.s. = non-significative; ** = significative (P ≤ 0,01); *= (P < 0,05). Both materials showed 100% leaf retention throughout the experiment. The fresh mass of the aerial part of the ‘native’ species and the ‘General Monk Red Blue’ showed no statistical differences in any applied dose of IBA, including the control treatment (Table 2). Table 2 Length of the largest root (LLR), number of roots formed per cutting (NR), root fresh mass (RFM), shoot fresh mass (SFM), root dry mass (RDM)) and shoot dry mass (SDM) of cuttings with different doses of IBA in F. regia (Vell.) Munz (‘native’) and F. hybrida Hort. Ex Siebert & Voss variety ‘General Monk Red Blue’ (‘General Monk’) (ESALQ/USP, Piracicaba, SP, 2018). Genotypes IBA LLR (cm) NR RFM (g) SFM (g) RDM (g) SDM (g) ‘General Monk' 0 2.80b 13.47c 2.00b 5.36a 0.19b 0.85a 200 3.87a 22.24b 3.48a 5.75a 0.29a 0.82a 400 3.62a 25.06b 3.97a 6.31a 0.32a 0.89a 600 4.16a 25.58b 3.83a 6.30a 0.31a 0.92a 800 4.01a 34.91a 4.35a 6.12a 0.33a 0.85a ‘native’ 0 2.84c 13.69b 1.51c 6.02a 0.16c 1.30a 200 2.93bc 14.31ab 1.79bc 5.65a 0.18bc 1.19a 400 3.48ab 16.44ab 2.52ab 6.20a 0.25ab 1.26a 600 3.26ab 16.88ab 2.20ab 6.21a 0.21abc 1.24a 800 3.91a 18.06a 2.72a 7.00a 0.27a 1.45a Means followed by the same letter in the column per genotype do not differ statistically from each other by Tukey test (α=0.05). ‘General Monk Red Blue’ cuttings showed no significant differences among doses for LLR, RMF and RDM except for the control treatment (Table 2). The number of roots (NR) showed differentiation in all doses of IBA, although the concentration of 800 mg.L-1 provided the greatest increase in the number of roots, with a value of 34.91 units (Table 2), differing statistically from the other treatments. In the ‘native’ species, the highest concentrations (400, 600 and 800 mg.L-1) had greater effect on LLR, NR, RFM, and RDM. Regarding the number of roots (NR), the highest concentration applied (800 mg.L-1) differed significantly from the control treatment but did not differ from the other doses (Table 2). These results suggested a positive effect on the parameters evaluated due to the application of IBA in any dose tested, especially higher concentrations. F.regia and F. hybrida ‘General Monk Red Blue’ responded differently to the different doses of IBA concentrations applied. Besides the similar response between the two genotypes for LLR, NR, RFM and RDM were similar under the control treatment, ‘General Monk Red Blue’ responded statistically better to treatments with IBA in all concentrations for most of the parameters evaluated (Table 3). Table 3 Effect of different doses of IBA (0,200,400, 600 e 800 mg.L-1) in F. regia (Vell.) Munz (‘native’) and F. hybrida Hort. Ex Siebert & Voss var. ‘General Monk Red Blue’ (General Monk’) for the evaluation of length of the largest root (LLR), number of roots formed per cutting (NR), root fresh mass (RFM), shoot fresh mass (SFM), root dry mass (RDM)) and shoot dry mass (SDM) (ESALQ/USP, Piracicaba, SP, 2018). Parameters Genotypes -----------------------------------------IBA doses (mg.L-1)---------------------------------------- 0 200 400 600 800 LLR (cm) GM 2.80 A 3.88 A 3.61 A 4.16 A 4.01 A N 2.84 A 2.93 B 3.49 A 3.27 B 3.27 B NR GM 13.47 A 22.24 A 25.58 A 25.06 A 34.91 A N 13.69 A 14.31 B 16.43 B 16.87 B 18.06 B RFM (g) GM 2.00 A 3.48 A 3.97 A 3.83 A 4.35 A N 1.52 A 1.79 B 2.52 B 2.21 B 2.72 B SFM (g) GM 5.36 A 5.75 A 6.31 A 6.30 A 6.13 A N 6.03 A 5.65 A 6.20 A 6.21 A 7.00 A RDM (g) GM 0.19 A 0.29 A 0.33 A 0.31 A 0.33 A N 0.16 A 0.18 B 0.25 B 0.21 B 0.27 B SDM (g) GM 0.85 B 0.83 B 0.89 B 0.92 B 1.46 A N 1.30 A 1.19 A 1.26 A 1.24 A 0.85 B Means followed by the same letter in the column per parameter and dose do not differ statistically from each other by Tukey test (α=0.05). DISCUSSION: Cuttings rooting is a genetically controlled phenomenon and requires the presence of auxin, which induces the formation of the root primordium. There is often an imbalance in the natural levels of this hormone, requiring the use of plant growth regulators exogenous to the plant, such as indolebutyric acid (IBA) and naphthaleneacetic acid (ANA) (PAIVA et al., 2005). The significant interaction presented that the genotypes of Fuchsia studied in this research showed favorable responses to the use of indolebutyric acid in all concentrations used. This positive response may be related to several endogenous factors, such as hormonal balance, the physiological condition of the stock plant and the state of youth (MILANI et al, 2015). Similar results were reported in other ornamental plants (Alternanthera brasiliana (L.) Kuntze var. brasiliana, Alternanthera dentada (Moench) Scheygr., Pileia cadierei Ganep. & Guillaumin, Pileia microphylla (L.) Liebm. e Sphagneticola trilobata (L.) Pruski), whose highest concentration of IBA (2,000 mg.L-1) generated a greater number of roots, as obtained in Fuchsia (MENEGAES et al., 2017). The ‘General Monk Red Blue’ and ‘native’ Fuchsias showed a different development in response to the plant growth regulator IBA (Table 2).The interaction between IBA doses and genotypes demonstrate that ‘General Monk Red Blue’ responded statistically better to IBA doses than ‘native’, despite being of the same genus. The variation in the response to plant growth regulators is dependent on environmental conditions, genetic characteristics, and the concentration of endogenous auxin in the plant (FACHINELLO et al., 2005; GRATIERI-SOSSELLA et al., 2008). For this reason, rooting capacity may be different even between species of the same genus (PAULUS et al, 2016). LIMA et al. (2006) reported different rooting results for two species of Calliandra, C. tweediei and C. selloi, when using exogenous auxin to obtain cuttings. This same behavior was observed in cuttings of the genus Ficus (F. ovata, F. polita and F. platyphylla) (DANTHU et al., 2002) and of the genus Baccharis (B. articulata, B. stenicephala and B. trimera) (BONA et al., 2004). It was observed that the all doses of IBA favored the rooting of both materials, that is, there was an interaction between genotypes and doses, and the concentration of 800 mg.L-1 of IBA was the most effective for NR and LLR (Table 3). Both materials showed a better visual appearance of the roots, with greater root thickness and better quality of the root ball. RAMOS et al. (2003) and NICOLA et al. (2005) obtained a better development of the number, length, and dry mass of the roots in cuttings of Prunus cerasifera and Salvia officinalis, respectively, due to the application of indolebutyric acid. However, when Prunus cerasifera was subjected to high amounts of exogenous auxin, there was a decrease in the development of the roots and causing an inhibitory effect. Excessive doses of phytohormone can promote an effect contrary to the expected, being able to be considered phytotoxic (FACHINELLO et al., 2005; PRETI et al., 2012; TAIZ & ZEIGER, 2013). Some species require higher concentrations of exogenous auxin, such as P. cerasifera, which showed a peak in the development of length, number and dry mass of the roots between 2000 and 3000 mg.L-1. Conversely, CAMPOS & PETRY (2009) obtained excellent results for rooting cuttings of Glandularia marrubioides (Cham.) Tronc. cf. with the application of 600 mg.L-1 of IBA. Root development closely related to IBA doses, as reported by ULLAH et al. (2013) who observed a significant increase in the number of roots (100 mg.L-1) and root length (400 mg.L-1) of the species Tagetes erecta. PAULUS et al. (2016) observed that rosemary cuttings treated with IBA at a concentration of 2,500 mg.L-1 showed the best results for fresh and dry mass of roots, and length of the largest root. In the assessment of fresh and dry root mass (Tables 2 and 3), it was observed that the interaction of the treatments with IBA caused significant differences in both species of Fuchsia. The cuttings of ‘General Monk Red Blue’ and ‘native’ produced with a concentration of 800 mg.L-1 of IBA obtained, respectively, fresh mass of 2.35g and 1.20g and dry mass of 0.14g and 0.11g more than the control treatment. BONA et al. (2010) observed that the increase in dry mass of roots proportionally accompanied the increase in the concentration of IBA (0; 500; 1000; 2000; 3000 mg.L-1) applied in lavender cuttings (Lavandula dentata). The lavender cuttings showed denser and branched roots, with better quality compared to those produced in the lowest doses of the hormone, similar to the results obtained with ‘General Monk Red Blue’ and ‘native’ princess earring genotypes. The propagation of cuttings of F. regia and F. hybrida ‘General Monk Red Blue’ with IBA in the concentration of 800 mg.L-1 contributed to the success of rooting; because it favored the emission of a greater number of roots, formed the main root with greater length and promoted greater fresh and dry mass. Therefore, the use of IBA provided development of cuttings of princess earrings with better quality. In addition, the use of exogenous auxin can contribute to the conservation of F. regia (Vell.) Munz “native”, since extraction can be minimized with the dissemination of technologies that promote an efficient propagation method for commercialization. CONCLUSION: The rooting of princess earring cuttings F. regia and F. hybrida ‘General Monk Red Blue’ was favored by the use of IBA in the concentration of 800 mg.L-1, as it promoted the production of better quality cuttings. Fuchsia ‘General Monk Red Blue’ responded statistically better to the treatments with IBA in all concentrations, for most of the parameters evaluated; therefore, being the best genotype for rooting cuttings with the use of indolebutyric acid plant growth regulator. ACKNOWLEDGEMENTS We gratefully acknowledge Escola Superior de Agricultura ‘Luiz de Queiroz’ da Universidade de São Paulo. REFERENCES ALCANTARA, G.B. de et al. Enraizamento de estacas caulinares de brinco-de-princesa com diferentes comprimentos. Scientia Agraria, Curitiba, v.9, n.4, p.575-578, 2008. Available from: <Available from: https://revistas.ufpr.br/agraria/article/view/13138 >. Acessed: Feb. 16, 2018. doi: 10.5380/rsa.v9i4.13138. ALCANTARA G.B. de Enraizamento de estacas caulinares de brinco-de-princesa com diferentes comprimentos. Scientia Agraria Curitiba 9 4 575 578 2008 Available from: https://revistas.ufpr.br/agraria/article/view/13138 Feb. 16, 2018 10.5380/rsa.v9i4.13138. BERRY, P.E. The systematics and evolution of Fuchsia sect. Fuchsia (Onagraceae). Annals of the Missouri Botanical Garden, Saint Louis, v. 69, n.1, p. 1-198, 1982. Available from: <Available from: https://www.jstor.org/stable/2398789 >. Accessed: Feb. 05, 2018. doi: 10.2307/2398789. BERRY P.E. The systematics and evolution of Fuchsia sect. Fuchsia (Onagraceae). Annals of the Missouri Botanical Garden Saint Louis 69 1 1 198 1982 Available from: https://www.jstor.org/stable/2398789 Feb. 05, 2018 10.2307/2398789. BERRY, P.E. 1989. A systematic revision of Fuchsia sect. Quelusia (Onagraceae). Annals of the Missouri Botanical Garden , Saint Louis, v. 76, n. 2, p. 532-584, 1989. Available from: <Available from: https://www.jstor.org/stable/2399499 >. Accessed: Feb. 03, 2018. doi: 10.2307/2399499. BERRY P.E. 1989 Annals of the Missouri Botanical Garden Saint Louis 76 2 532 584 Available from: https://www.jstor.org/stable/2399499 Feb. 03, 2018 10.2307/2399499. BONA, C. M. et al. Propagação de três espécies de carqueja com estacas de diferentes tamanhos. Semina Ciências Agrárias, Londrina, v. 25, n. 3, p. 179-184, 2004. Available from: <Available from: http://www.uel.br/revistas/uel/index.php/semagrarias/article/view/2238/1920 >. Accessed: Apr. 20, 2018. doi: <Available from: http://dx.doi.org/10.5433/1679-0359.2004v25n3p179 >. BONA C. M. Propagação de três espécies de carqueja com estacas de diferentes tamanhos. Semina Ciências Agrárias Londrina 25 3 179 184 2004 Available from: http://www.uel.br/revistas/uel/index.php/semagrarias/article/view/2238/1920 Apr. 20, 2018 Available from: http://dx.doi.org/10.5433/1679-0359.2004v25n3p179 BONA, C.M. et al. Adventitious rooting of auxin-treated Lavandula dentata cuttings. Ciência Rural, Santa Maria, v.40, n.5, p.1210-1213, mai. 2010. Available from: <Available from: http://dx.doi.org/10.1590/S0103-84782010005000081 >. Accessed: Mar. 23, 2018. doi: 10.1590/S0103-84782010005000081. BONA C.M. Adventitious rooting of auxin-treated Lavandula dentata cuttings Ciência Rural Santa Maria 40 5 .1210 .1213 05 2010 Available from: http://dx.doi.org/10.1590/S0103-84782010005000081 Mar. 23, 2018 10.1590/S0103-84782010005000081. BRICKELL, C. 1996. A-Z Encyclopedia of garden plants. The Royal Horticultural Society, London. BRICKELL C. 1996 A-Z Encyclopedia of garden plants The Royal Horticultural Society London BRICKELL, C. 2011. Encyclopedia of Plants and Flowers. DK: American Horticultural Society. BRICKELL C. 2011 Encyclopedia of Plants and Flowers DK: American Horticultural Society CAMPOS, C.C.; PETRY, C. 2009. Propagação vegetativa e potencial paisagístico de uma verbena rasteira. Revista Brasileira de Horticultura Ornamental, v.14, n.2, p. 169-178, 2009. Available from: <Available from: https://ornamentalhorticulture.emnuvens.com.br/rbho/article/view/287 >. Accessed: May. 04, 2018. doi: 10.14295/rbho.v14i2.287. CAMPOS C.C. PETRY C. Propagação vegetativa e potencial paisagístico de uma verbena rasteira. Revista Brasileira de Horticultura Ornamental 14 2 169 178 2009 Available from: https://ornamentalhorticulture.emnuvens.com.br/rbho/article/view/287 May. 04, 2018 10.14295/rbho.v14i2.287. CORADIN, L. et al. Espécies nativas da flora brasileira de valor econômico atual ou potencial: plantas para o futuro - Região Sul. Brasília, DF: Ministério do Meio Ambiente (MMA), 2011. 934p. CORADIN L. Espécies nativas da flora brasileira de valor econômico atual ou potencial: plantas para o futuro - Região Sul. Brasília, DF Ministério do Meio Ambiente (MMA) 2011 934 934 DANTHU, P. et al. Vegetative propagation of some West African Ficus species by cuttings. Agroforestry Systems, Netherlands, v. 55, p. 57-63, 2002. Available from: <Available from: https://doi.org/10.1023/A:1020254808316 >. Accessed: Jun. 07, 2018. doi: 10.1023/A:1020254808316. DANTHU P. Vegetative propagation of some West African Ficus species by cuttings. Agroforestry Systems Netherlands 55 57 63 2002 Available from: https://doi.org/10.1023/A:1020254808316 Jun. 07, 2018 10.1023/A:1020254808316. Decreto nº 38.400, de 16 de abril de 1998. Instituiu-se como Flor-símbolo do Estado do Rio Grande do Sul, a espécie “Brinco-de-princesa”, Fuchsia regia (Vell.) Munz, da família Onagraceae. Site oficial da Assembleia Legislativa do Rio Grande do Sul. Available from: <Available from: http://www.al.rs.gov.br/legis >. Accessed: Aug. 03, 2018. Decreto nº 38.400 16 04 1998 Instituiu-se como Flor-símbolo do Estado do Rio Grande do Sul, a espécie “Brinco-de-princesa”, Fuchsia regia (Vell.) Munz, da família Onagraceae. Site oficial da Assembleia Legislativa do Rio Grande do Sul Available from: http://www.al.rs.gov.br/legis Aug. 03, 2018 EMER, A. A. et al. Influência de ácido indolbutírico no enraizamento de estacas semilenhosas de Campomanesia aurea. Ornamental Horticulture, v. 22, n. 1, p. 94, 2016. Available from: <Available from: https://ornamentalhorticulture.emnuvens.com.br/rbho/article/view/855 >. Accessed: Sep. 29, 2018. doi: 10.14295/oh.v22i1.855. EMER A. A. Influência de ácido indolbutírico no enraizamento de estacas semilenhosas de Campomanesia aurea. Ornamental Horticulture 22 1 94 94 2016 Available from: https://ornamentalhorticulture.emnuvens.com.br/rbho/article/view/855 Sep. 29, 2018 10.14295/oh.v22i1.855. EURO-FUCHSIA: the association of european fuchsia societies and fuchsia lovers all over the world. 2018. Available from: <Available from: http://www.eurofuchsia.org/ >. Accessed: Mar. 05, 2018. EURO-FUCHSIA the association of european fuchsia societies and fuchsia lovers all over the world 2018 Available from: http://www.eurofuchsia.org/ Mar. 05, 2018 FACHINELLO, J.C. et al. Propagação vegetativa por estaquia. In: FACHINELLO, J.C.; HOFFMAN, A.; NACHTIGAL (Eds.). Propagação de plantas frutíferas. Brasília, DF: Embrapa Informação Tecnológica, 2005. p. 69-110. FACHINELLO J.C. Propagação vegetativa por estaquia FACHINELLOJ.C.HOFFMANA.NACHTIGAL Propagação de plantas frutíferas Brasília, DF Embrapa Informação Tecnológica 2005 69 110 GRATIERI-SOSSELLA, A. et al. 2008. Propagação da corticeira do banhado (Erythrina crista-galli L.) (FABACEAE) pelo processo de estaquia. Revista Árvore, v. 32, n. 1, p. 163-171, 2008. Available from: <Available from: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-67622008000100018&lng=pt&nrm=iso&tlng=pt >. Accessed: Oct. 02, 2018. doi: 10.1590/S0100-67622008000100018. GRATIERI-SOSSELLA A. 2008 Propagação da corticeira do banhado (Erythrina crista-galli L.) (FABACEAE) pelo processo de estaquia. Revista Árvore 32 1 163 171 Available from: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-67622008000100018&lng=pt&nrm=iso&tlng=pt Oct. 02, 2018 10.1590/S0100-67622008000100018. HARTMANN, H. T. et al. Plant propagation: principles and practices. 7th ed. Upper Saddle River: Prentice-Hall, 2002.880p. HARTMANN H. T. Plant propagation: principles and practices 7th Upper Saddle River Prentice-Hall 2002 880 880 HEIDEN, G. et al. Considerações sobre o uso de plantas ornamentais nativas. Revista Brasileira de Horticultura Ornamental , v.12, n.1, p.2-7, 2006. Available from: <Available from: https://doi.org/10.14295/rbho.v12i1.60 >. Accessed: Aug. 12, 2018. doi: 10.14295/rbho.v12i1.60. HEIDEN G. Considerações sobre o uso de plantas ornamentais nativas. Revista Brasileira de Horticultura Ornamental 12 1 2 7 2006 Available from: https://doi.org/10.14295/rbho.v12i1.60 Aug. 12, 2018 10.14295/rbho.v12i1.60. JUNQUEIRA, A. H.; PEETZ, M. Brazilian consumption of flowers and ornamental plants: habits, practices and trends. Ornamental Horticulture , v. 23, n. 2, p. 178-184, 2017. Available from: <Available from: https://ornamentalhorticulture.emnuvens.com.br/rbho/article/view/1070/719 >. Accessed: Apr. 04, 2018. doi: 10.14295/oh.v23i2.1070. JUNQUEIRA A. H. PEETZ M. Brazilian consumption of flowers and ornamental plants: habits, practices and trends Ornamental Horticulture . 23 2 178 184 2017 Available from: https://ornamentalhorticulture.emnuvens.com.br/rbho/article/view/1070/719 Apr. 04, 2018 10.14295/oh.v23i2.1070. LAZZERI SOCIETÀ AGRICOLA(LAZZERI). Catalog-Spring-Summer 2018. 2018. Available from: <Available from: http://www.lazzeri.com >. Accessed: Mar. 24, 2018. LAZZERI SOCIETÀ AGRICOLA(LAZZERI) Catalog-Spring-Summer 2018 2018 Available from: http://www.lazzeri.com Mar. 24, 2018 LIMA, D.M. et al. Substratos e concentrações de ácido naftaleno acético no enraizamento de estacas semilenhosas de Calliandra selloi e Calliandra tweediei. Scientia Agraria , v.7, n.1-2, p. 105-111, 2006. Available from: <Available from: http://dx.doi.org/10.5380/rsa.v7i1.7280 >. Accessed: Jun. 04, 2018. doi: 10.5380/rsa.v7i1.7280. LIMA D.M. Substratos e concentrações de ácido naftaleno acético no enraizamento de estacas semilenhosas de Calliandra selloi e Calliandra tweediei Scientia Agraria .7 .1-2 105 111 2006 Available from: http://dx.doi.org/10.5380/rsa.v7i1.7280 Jun. 04, 2018 10.5380/rsa.v7i1.7280. LIMA, D.M. et al. Ácido indolbutírico no enraizamento de estacas de Langerstroemia indica em diferentes substratos. Pesquisa Florestal Brasileira, v.36, n.88, p.549-554, 2017. Available from: <Available from: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/1022 >. Accessed: Sep. 29, 2018. doi: 10.4336/2016.pfb.36.88.1022. LIMA D.M. Ácido indolbutírico no enraizamento de estacas de Langerstroemia indica em diferentes substratos. Pesquisa Florestal Brasileira 36 88 549 554 2017 Available from: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/1022 Sep. 29, 2018 10.4336/2016.pfb.36.88.1022. LORENZI, H.; SOUZA, H. M. Plantas ornamentais no Brasil: arbustivas, herbáceas e trepadeiras.4 ed. Nova Odessa, SP: Instituto Plantarum, 2008.1088p. LORENZI H. SOUZA H. M. Plantas ornamentais no Brasil: arbustivas, herbáceas e trepadeiras 4 Nova Odessa, SP Instituto Plantarum 2008 1088 1088 MAZZINI, R.B. Propagação vegetativa e produção de mudas de Bauhinia spp. Jaboticabal, 2012. Dissertação (doutorado em Agronomia - Produção Vegetal) - Universidade Estadual Paulista, Faculdade de Ciências Agrárias e Veterinárias. MAZZINI R.B. Propagação vegetativa e produção de mudas de Bauhinia spp Jaboticabal 2012 Dissertação (doutorado em Agronomia - Produção Vegetal Universidade Estadual Paulista, Faculdade de Ciências Agrárias e Veterinárias MENEGAES, J.F. et al. Enraizamento de estacas de forrações ornamentais em diferentes concentrações de ácido indolbutírico. Nativa, v. 5, n. 5, p. 311-315, 2017. Available from: <Available from: http://www.gnresearch.org/doi/10.5935/2318-7670.v05n05a02 >. Accessed: Oct. 05, 2018. doi: 10.5935/2318-7670.v05n05a02. MENEGAES J.F. Enraizamento de estacas de forrações ornamentais em diferentes concentrações de ácido indolbutírico. Nativa 5 5 311 315 2017 Available from: http://www.gnresearch.org/doi/10.5935/2318-7670.v05n05a02 Oct. 05, 2018 10.5935/2318-7670.v05n05a02. NICOLA, S. et al. Rooting products and cutting timing on sage (Salvia officinalis L.) propagation. Acta Horticulturae, v. 676, p. 135-141, 2005. Available from: <Available from: https://www.actahort.org/books/676/676_16.htm >. Accessed: Aug. 23, 2018. doi: 10.17660/ActaHortic.2005.676.16. NICOLA S. Rooting products and cutting timing on sage (Salvia officinalis L.) propagation Acta Horticulturae 676 135 141 2005 Available from: https://www.actahort.org/books/676/676_16.htm Aug. 23, 2018 10.17660/ActaHortic.2005.676.16. NOMAN, A. et al. Biotechnological advancements for improving floral attributes in ornamental plants. Frontiers in Plant Science, v. 8, n. 530, 2017. Available from: <Available from: https://doi.org/10.3389/fpls.2017.00530 >. Accessed: Mar. 02, 2020. doi: 10.3389/fpls.2017.00530. NOMAN A. Biotechnological advancements for improving floral attributes in ornamental plants. Frontiers in Plant Science 8 530 2017 Available from: https://doi.org/10.3389/fpls.2017.00530 Mar. 02, 2020 10.3389/fpls.2017.00530. PAIVA, R. et al. Aspectos fisiológicos da produção de flores e plantas ornamentais. Informe Agropecuário, v. 26, n. 227, p. 12-19, 2005. PAIVA R. Aspectos fisiológicos da produção de flores e plantas ornamentais. Informe Agropecuário 26 227 12 19 2005 PAULUS, D. et al. Ácido indolbutírico na propagação vegetativa de alecrim. Horticultura Brasileira, v. 34, n. 2004, p. 520-528, 2016. Available from: <Available from: https://doi.org/10.1590/s0102-053620160411 >. Accessed: Jun. 18, 2018. doi: 10.1590/s0102-053620160411v. PAULUS D. Ácido indolbutírico na propagação vegetativa de alecrim. Horticultura Brasileira 34 2004 520 528 2016 Available from: https://doi.org/10.1590/s0102-053620160411 Jun. 18, 2018 10.1590/s0102-053620160411v. PRETI, E. A. et al. Estaquia de Resedá-Nacional (Physocalymma scaberrimu Pohl.) em diferentes substratos e concentrações de AIB. Ciência Florestal, v. 22, n. n. 2, p. 377-383, 2012. Available from: <Available from: https://doi.org/10.5902/198050985745 >. Accessed: Jul. 03, 2018. doi: 10.5902/198050985745. PRETI E. A. Estaquia de Resedá-Nacional (Physocalymma scaberrimu Pohl.) em diferentes substratos e concentrações de AIB. Ciência Florestal 22 2 377 383 2012 Available from: https://doi.org/10.5902/198050985745 Jul. 03, 2018. 10.5902/198050985745. RAMOS, J. D. et al. Enraizamento de estacas herbáceas de “mirabolano” (Prunus cerasifera Ehrn) em diferentes substratos e concentrações de ácido indolbutírico. Revista Brasileira de Fruticultura, v. 25, n. 1, p. 189-191, 2003. Available from: <Available from: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452003000100053&lng=pt& nrm=iso&tlng=pt >. Accessed: Nov. 03, 2018. doi: 10.1590/S0100-29452003000100053. RAMOS J. D. Enraizamento de estacas herbáceas de “mirabolano” (Prunus cerasifera Ehrn) em diferentes substratos e concentrações de ácido indolbutírico. Revista Brasileira de Fruticultura 25 1 189 191 2003 Available from: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452003000100053&lng=pt& nrm=iso&tlng=pt Nov. 03, 2018 10.1590/S0100-29452003000100053. SAS INSTITUTE. 2018. SAS Studio. Available from: <Available from: https://www.sas.com/en_us/software/university-edition.html >. Accessed: Oct. 10, 2018. SAS INSTITUTE 2018 SAS Studio Available from: https://www.sas.com/en_us/software/university-edition.html Oct. 10, 2018 TAIZ, L.; ZEIGER, E. Fisiologia vegetal. 5t hed. ArtMed, Porto Alegre, 2013. 954p. TAIZ L. ZEIGER E. Fisiologia vegetal 5t ArtMed Porto Alegre 2013 954 954 TOMBOLATO, A.F.C. 2008. Potencial ornamental de espécies nativas. Revista Brasileira de Horticultura Ornamental , v.14, n.1, p.27-28, 2008. Available from: <Available from: https://ornamentalhorticulture.emnuvens.com.br/rbho/article/download/227/154 >. Accessed: Oct. 24, 2018. TOMBOLATO A.F.C. 2008 Potencial ornamental de espécies nativas Revista Brasileira de Horticultura Ornamental 14 1 27 28 Available from: https://ornamentalhorticulture.emnuvens.com.br/rbho/article/download/227/154 Oct. 24, 2018 ULLAH, Z. et al. Effect of indolebutyric acid (IBA) and naphthaleneacetic acidd (NAA) plant growth regulaters on Mari gold (Tagetes erecta L.). African Journal of Agricultural Research, vol. 8, n.29, p. 4015-4019, 2013. Available from: <Available from: https://academicjournals.org/journal/AJAR/article-full-text-pdf/A18FE2634888 >. Accessed: Nov. 16, 2019. doi: 10.5897/AJAR12.1721. ULLAH Z. Effect of indolebutyric acid (IBA) and naphthaleneacetic acidd (NAA) plant growth regulaters on Mari gold (Tagetes erecta L.). African Journal of Agricultural Research 8 29 4015 4019 2013 Available from: https://academicjournals.org/journal/AJAR/article-full-text-pdf/A18FE2634888 Nov. 16, 2019 10.5897/AJAR12.1721. CR-2020-0863.R1