<b>Acclimatization of banana plantlets inoculated with <i>Bacillus</i> sp. and irrigated with low-salinity water</b>

Rodrigues, Ana J. O.; Silva, Christiana de F. B. da; Sousa, Alan B. O. de; Bezerra, Marlos A.; Araújo, Beatriz de A.; Rodrigues, Amadeus M. G.; Vieira, Júlia Q.; Sousa, Jhenifer S. de

doi:10.1590/1807-1929/agriambi.v27n5p407-414

Ana J. O. Rodrigues

Instituto Federal de Educação, Ciência e Tecnologia do Ceará/Campus Crateús, Crateús, CE, Brazil

https://orcid.org/0000-0003-0672-1522

Christiana de F. B. da Silva ^** Corresponding author - E-mail: christiana.bruce@embrapa.br

Embrapa Agroindústria Tropical, Fortaleza, CE, Brazil

https://orcid.org/0000-0002-1794-8581

Alan B. O. de Sousa

Universidade Federal do Ceará/Centro de Ciências Agrárias/Departamento de Engenharia Agrícola, Fortaleza, CE, Brazil

https://orcid.org/0000-0001-7786-0306

Marlos A. Bezerra

Embrapa Agroindústria Tropical, Fortaleza, CE, Brazil

https://orcid.org/0000-0002-8622-0770

Beatriz de A. Araújo

Universidade Federal do Ceará/Centro de Ciências Agrárias/Departamento de Engenharia Agrícola, Fortaleza, CE, Brazil

https://orcid.org/0000-0001-8560-6594

Amadeus M. G. Rodrigues

Universidade Federal do Ceará/Centro de Ciências Agrárias/Departamento de Engenharia Agrícola, Fortaleza, CE, Brazil

https://orcid.org/0000-0003-3626-2291

Júlia Q. Vieira

Universidade Federal do Ceará/Centro de Ciências Agrárias/Departamento de Engenharia Agrícola, Fortaleza, CE, Brazil

https://orcid.org/0000-0002-5178-9836

Jhenifer S. de Sousa

Universidade da Integração Internacional da Lusofonia Afro-Brasileira, Redenção, CE, Brazil

https://orcid.org/0000-0001-6347-3364

* Corresponding author - E-mail: christiana.bruce@embrapa.br

Editors: Lauriane Almeida dos Anjos Soares & Hans Raj Gheyi

Figures (2)
Tables (5)

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Figure 1
Number of leaves - A, and leaf area - B, of banana plants cv. ‘Prata Catarina’, subjected to growth promoters with inoculation of Bacillus sp. strains 186 and 109, and subjected to salinity levels of irrigation water, compared to non-inoculated controls (non-fertilized/non-inoculated plants - control - and fertilized plants- control +)

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Figure 2
CO₂ assimilation rate (A) - A, stomatal conductance (gs) - B, transpiration rate (E) - C and internal CO₂ concentration (Ci) - D of banana cv. ‘Prata Catarina’, when subjected to different salinity levels of irrigation water

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Table 1
Chemical characteristics of non-autoclaved and autoclaved soil

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Table 2
Analysis of variance of the growth and development variables of banana cultivar ‘Prata Catarina’, subjected to growth promoter with inoculation with Bacillus sp. strains 186 and 109, when compared to controls (non-fertilized/non-inoculated plants and fertilized plants), at 155 days of irrigation with saline water

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Table 3
Analysis of variance of the gas exchange variables of banana cultivar ‘Prata Catarina’, subjected to growth promoter with inoculation with Bacillus sp. strains 186 and 109, when compared to controls (non-fertilized/non-inoculated plants and fertilized plants), at 155 days of irrigation with saline water

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Table 4
Analysis of variance of the mineral contents in shoots of banana cultivar ‘Prata Catarina’, subjected to growth promoter with inoculation with Bacillus sp. strains 186 and 109, and levels of electrical conductivity of irrigation water (ECw) at 155 days of irrigation with saline water

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Table 5
Mineral contents in leaves of banana cv. ‘Prata Catarina’ subjected to the interaction between factors growth promoter with inoculation with Bacillus sp. strains 186 and 109, and levels of electrical conductivity of irrigation water

Soil	OM (g kg^-1)	pH	P (mg dm^-3)	K	Ca	Mg	Na	H + Al	Al⁺³	SB	CEC	V (%)
Soil	OM (g kg^-1)	pH	P (mg dm^-3)	(mmol_c dm^-3)								V (%)
Non-autoclaved	6.2	5.5	9.4	1.2	11	5	0	21.8	0.4	18	39	45
Autoclaved	5.7	5.6	5.6	1.3	10	5	0	23.8	0.0	17	41	41

Sources of variation		Mean squares
Sources of variation		Number of leaves	Plant height	Pseudostem diameter	Length of largest root	Leaf area	Shoot fresh mass	Root fresh mass	Shoot dry mass
Growth promoter	3	0.11^ns	34.21 ^ns	65.57 ^ns	5.61 ^ns	0.35 ^ns	0.51 ^ns	2.21 ^ns	0.0049 ^ns
ECw	1	7.03*	36.12 ^ns	8.39 ^ns	5.69 ^ns	0.097 ^ns	0.028 ^ns	5.15 ^ns	0.000052 ^ns
Growth promoter × ECw	3	0.61*	22.71 ^ns	12.70 ^ns	0.15 ^ns	0.27 *	0.15 ^ns	0.52 ^ns	0.00077 ^ns
Residual	24	0.97	26.50	32.18	23.42	0.082	0.30	1.48	0.0028
CV (%)	-	15.67	6.07	5.40	12.39	20.34	17.87	24.14	16.71

Sources of variation		Mean squares
Sources of variation		CO₂ assimilation rate (A)	Stomatal conductance (gs)	Transpiration rate (E)	Internal CO₂ concentration (Ci)
Growth promoter	3	9.54 ^ns	0.010 ^ns	0.18 ^ns	1920.78 ^ns
ECw	1	25.32 **	2.12**	181.07 **	23274.03 **
Growth promoter × ECw	3	1.75 ^ns	0.011 ^ns	0.34 ^ns	403.78 ^ns
Residual	24	4.64	0.009	0.63	1058.36
CV (%)	-	20.90	22.44	23.63	12.17

Sources of variation	DF	Mean squares
		Mineral contents in shoots
		N	P		K	Ca		Mg	S		Na¹
Growth promoter	3	1.77^ns	0.03^ns		1.93^ns	1.17^ns		0.23^ns	0.010^ns		3.46*
ECw	1	20.70^ns	0.06^ns		8.47^ns	0.38^ns		0.11^ns	0.046^ns		56.34*
Growth promoter × ECw	3	0.37^ns	0.10*		10.04^ns	10.42*		0.33*	0.016^ns		3.09*
Residual	24	4.91	0.02		13.58	3.07		0.12	0.011		0.58
CV (%)	-	11.85	10.07		19.03	24.40		18.87	9.47		44.38
		Micronutrients in shoots
		Cu¹		Fe			Zn			Mn
Growth promoter	3	3.64^ns		75.09^ns			19.24^ns			732.22^ns
ECw	1	0.69^ns		22.21^ns			22.22^ns			7.34^ns
Growth promoter x ECw	3	1.22^ns		581.29*			18.62^ns			2554.38^ns
Residual	24	0.37		152.03			10.97			1096.71
CV (%)	-	22.36		17.14			28.10			20.19

Salinity	Means
Salinity	0.5	2.0	0.5	2.0
Treatment	P (g kg^-1)		Na (g kg^-1)
Control -	1.37 bA	1.48 aA	0.08 aB	3.63 aA
Control +	1.45 abA	1.48 aA	1.16 aB	2.99 aA
Strain 186	1.38 bA	1.30 aA	0.06 aB	1.43 bA
Strain 109	1.69 aA	1.28 aB	0,23 aB	4.10 aA
	Ca (g kg^-1)		Fe (mg kg^-1)
Control -	7.79 aA	7.10 aA	61.25 aB	82.25 aA
Control +	5.72 aB	9.16 aA	74.00 aA	69.33 aA
Strain 186	6.64 aA	6.63 aA	62.50 aA	71.33 aA
Strain 109	8.17 aA	6.30 aA	83.50 aA	65.00 aB
	Mg (g kg^-1)		Cu (mg kg^-1)
Control -	1.64 bA	1.98 aA	14.00 aA	12.00 aA
Control +	2.30 aA	1.74 aB	10.30 aA	3.66 bB
Strain 186	1.65 bA	1.74 aA	2.75 bA	6.00 abA
Strain 109	1.67 bA	1.70 aA	9.25 abA	7.66 abA

[1] * Corresponding author - E-mail: christiana.bruce@embrapa.br

Brasil

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**Acclimatization of banana plantlets inoculated with Bacillus sp. and irrigated with low-salinity water** ¹ 1 Research developed at Embrapa Agroindústria Tropical, Fortaleza, CE, Brazil

Aclimatização de mudas de bananeira inoculadas com Bacillus sp. e irrigadas com água de baixa salinidade

HIGHLIGHTS:

ABSTRACT

Brasil

Brasil

Acclimatization of banana plantlets inoculated with Bacillus sp. and irrigated with low-salinity water 1 1 Research developed at Embrapa Agroindústria Tropical, Fortaleza, CE, Brazil

Aclimatização de mudas de bananeira inoculadas com Bacillus sp. e irrigadas com água de baixa salinidade

HIGHLIGHTS:

ABSTRACT

**Acclimatization of banana plantlets inoculated with Bacillus sp. and irrigated with low-salinity water** ¹ 1 Research developed at Embrapa Agroindústria Tropical, Fortaleza, CE, Brazil