IAC 2153 and IAC 2156: cranberry and dark red kidney common bean cultivars for new marketsAbstract:
IAC 2153 and IAC 2156 are new common bean cultivars with special bean grains for new markets, especially the international market. They have a mean hundred-seed weight of 50 g, mean cooking time of 32 min, resistance to anthracnose and Fusarium wilt, and moderate resistance to common bacterial blight.
Keywords: Phaseolus vulgaris L.; special beans; seed coat color
INTRODUCTION
Brazil is the third largest producer and largest consumer of common bean (dry edible bean) worldwide. In the 2020/21 crop season, it produced 2,23 tons of seeds, with a mean yield of approximately 1.300 kg ha-1 (CONAB 2021). The bean varieties most grown and consumed in Brazil are of Mesoamerican origin, of the carioca (cream-colored with brown streaks) and black seed coat types (Perseguini et al. 2015, Pereira et al. 2021). However, bean export demand from Brazil is around 160 thousand tons (CONAB 2021), especially for beans with other types of bean grains consumed in diverse countries (Kläsener et al. 2020). The special beans, especially the white, red, and rajado (pinto-type, cream-colored with reddish streaks) beans, are widely consumed in the international market (Pereira et al. 2016, Carbonell et al. 2020).
Among the main characteristics of these special group beans are differences in seed coat coloring and bean grain size (Chiorato et al. 2008). Prominent types of special bean grains for export are: i) navy and alubia, both with white seed coat, with differences in bean grain size; ii) dark red kidney (DRK) and light red kidney (LRK), both of large size, with differences in the intensity of the red seed coat; and iii) pinto, calima, and cranberry, with differences regarding bean grain size and the streaks or stripes of other colors (Kläsener et al. 2020, Pereira et al. 2021). Of these, the cranberry (cream-colored seed coat with red stripes) and red kidney (red) commercial groups are important for the international consumer market, especially for countries with high demand for these types of bean grain, such as the United Kingdom (Schneider 2002) and Canada (Hou et al. 2018).
So as to meet especially foreign demand, to promote Brazilian bean production for export, and to increased consumption of different types of beans in the Brazilian domestic market, Brazilian common bean breeding programs have released new special bean cultivars with high yield potential, ideal plant architecture for mechanized harvest, and resistance to the main bean diseases (Pereira et al. 2016, Carbonell et al. 2020, Pereira et al. 2021).
In order to meet the demands of the international market and diversify the domestic market, the PMGF-IAC released two new common bean cultivars with special grain types named IAC 2153 (cranberry) and IAC 2156 (dark red kidney).
GENETIC ORIGIN AND DEVELOPMENT
The line F6/7-99 (IAC 2153) was developed in 2016 from crosses between the genotypes IAC Nuance × Cranberry Argentino (NC); and the line OTG 07-9-1 (IAC 2156) was developed in 2007 from crosses between the genotypes DRK 18 × Bolinha Vermelho (DB). IAC Nuance was the first cranberry-type cultivar released by PMGF-IAC and has high yield (Carbonell et al. 2020). The Cranberry Argentino, DRK 18, and Bolinha Vermelho genotypes are accessions from the PMGF-IAC and were used as sources of resistance to anthracnose and Fusarium wilt.
The F1 seeds obtained from NC and DB crosses were sown in pots located in a greenhouse to obtain F2 generation seeds. After harvesting, these seeds were submitted to pathogenicity tests using a mixture of two different anthracnose (Colletotrichum lindemunthianum) races: 65 and 81. A total of 13 seedlings from the NC cross and 18 seedlings from the DB cross showed high resistance and were transplanted into pots under greenhouse conditions. These F2:3 plants were harvested, and the progeny from the NC cross was selected for brindle color pattern seed coat and rounded grains like the cranberry bean; and the DB progeny was selected for tubular grains, with a preference for the longest and DRK type.
The 13 families from the NC cross showed the expected bean grain pattern and were selected, whereas among the 18 families from the DB cross, only nine were selected. The selected F2:3 NC and DB families were sown in the municipality of Campinas, SP, aiming at selection within families. Altogether, 12 individual plants with superior agronomic fitness were selected from the NC cross and 15 from the DB cross, giving origin to the F2:4 families.
The families of both crosses were sown again in the dry season - the NC F2:4 families in Campinas, SP, in 2018, and the DB F2:4 families in Tatuí, SP, in 2009. Visual selection was performed, resulting in seven plants from the NC families and five plants from the NB families, giving origin to the F2:5 generations, which were sown in the winter crop season in 2018 in Mococa, SP, and in the rainy crop season in 2009 in Capão Bonito, SP, respectively. Selection within families was carried out again, with seven F2:6 plants being selected from the NC families and six F2:6 plants from the DB families, which were considered lines.
Among the seven NC F2:6 lines, the F6 / 99 line (F6 = self-fertilization generation; and 99 = original plot) exhibited larger grain size in relation to the others. The NC F2:6 lines were sown again in the rainy crop season in 2018 in Mococa, SP, and Capão Bonito, SP. The F6/99 lines performed better than the others in both locations. Due to self-pollination, the F6/99 line was renamed F7/99 and was included in VCU trails specifically for other grain types initiated by the PMGF-IAC in 2019.
In relation to the six F2:5 lines from the DB cross, OTG 07-9-1 (07 = 2007 year of cross; 9 = 2009 year of obtaining the line; and 1 = sequence of the lines) was the most prominent line. However, in the same year, the PMGF-IAC decided to release genotypes with tubular shape and striped color grain, which culminated in the release of the cultivars IAC Boreal and IAC Harmonia (Chiorato et al. 2008), and for that reason, the OTG 07-9-1 line was stored in the Germplasm Bank of the PMGF-IAC in 2010. With demand from the consumer market and exporters for expansion of the diversity of cultivars with other types of bean grains and great demand by packers and exporters for the DRK bean type, the PMGF-IAC decided to once more, evaluate OTG 07-9-1 in VCU trials, comparing it with other grain types, for which testing began in 2019.
PERFOMANCE
The VCU trials were conducted in ten environments in the state of São Paulo during the 2019 and 2020 years. In the dry crop season, the trials were conducted in the municipalities of Campinas, Capão Bonito, and Tatuí; in the winter crop season, were conducted in Mococa and Campinas; and, in the rainy crop season, were conducted in Monte Alegre do Sul e Capão Bonito The cultivar IAC 2153 stood out in the municipalities of Mococa (Winter/20), Monte Alegre do Sul (Rainy/19), and Capão Bonito (Rainy/19), with grain yield of 2083, 1703 and 1700 kg ha-1, respectively. Otherwise, the cultivar IAC 2156 stood out in Campinas (Dry/20), Tatuí (Dry/20), Mococa (Winter/19), Mococa (Winter/20), Capão Bonito (Rainy/19), and Capão Bonito (Rainy/20) (Table 1).
The results of combined analysis for grain yield show that the cultivars IAC 2153 and IAC 2156 not statistically different from the IAC Nuance and IAC Tigre in the VCU trials (Table 2). However, in absolute values, the cultivar IAC 2156 exceeding the mean yield of the two control cultivars by 39 kg ha-1.
The cultivars IAC 2153 and IAC 2156 were registered in 2021 under number 48141 and 48144, respectively, in the Registro Nacional de Cultivares of the Ministério da Agricultura, Pecuária e Abastecimento (MAPA/RNC).
OTHER AGRONOMIC TRAITS
Both cultivars IAC 2153 and IAC 2156 have a semi-up plant architecture, one hundred seed weight of 50 g and cooking time of 32 min. IAC 2153 has a mean cycle of 78 days and mean of crude protein content of 20%, while IAC 2156 has a mean cycle of 80 days and mean of crude protein content of 19.5%. In artificial inoculations trials, both cultivars were resistant to three races of Colletotrichum lindemuthianum, to Fusarium oxysporum f.sp. phaseoli, and moderately resistant to Xanthomonas axonopodis pv. Phaseoli.
The IAC 2153 and IAC 2156 were registered as suitable for growing in all crop seasons in the state of São Paulo and in rainy and dry crop seasons in South of Brazil. For both cultivars, row spaced at 0.5 m and 12 plants per linear meter, which result in 240.000 plants per hectare, is recommended. The Seed Production Center of the Instituto Agronômico (IAC) is responsible for seed production of the cultivars.
ACKNOWLEDGMENTS
The authors thank Embrapa Rice and Beans for providing the XAP 19 isolate.
REFERENCES
- Carbonell SAM, Chiorato AF, Bezerra LMC, Gonçalves JGR, Silva DA, Esteves JAF, Benchimol-Reis LL, Carvalho CRL, Barros VLNP, Freitas RS, Ticelli M and Gallo PB (2020) IAC Nuance and IAC Tigre: common bean cultivars for special markets IAC Nuance and IAC Tigre: common bean cultivars for special markets. Crop Breeding and Applied Biotechnology 20: e26732035.
- Chiorato AF, Carbonell SAM, Ito MF, Benchimol LL, Colombo CA, Perina EF, Ito MA, Ramos EU, De Freitas RS and Pereira JCVNA (2008) IAC-Boreal and IAC-Harmonia: Common bean cultivars with striped grains. Crop Breeding and Applied Biotechnology 8: 170-173.
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Publication Dates
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Publication in this collection
17 Dec 2021 -
Date of issue
2021
History
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Received
06 Oct 2021 -
Accepted
11 Nov 2021 -
Published
25 Nov 2021
