Seed vigor, genotype and proline in common bean seedling formation under drought and saline stress

Padilha, Matheus Santin; Coelho, Cileide Maria Medeiros; Sommer, Ânderson Scalvi

doi:10.5935/1806-6690.20220056

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Scientific Article • Rev. Ciênc. Agron. 53 • 2022 • https://doi.org/10.5935/1806-6690.20220056 copy

Seed vigor, genotype and proline in common bean seedling formation under drought and saline stress¹ 1 Part of the first author’s thesis

Vigor de sementes, genótipo e prolina na formação de plântulas de feijão sob estresse hídrico e salino

Authorship SCIMAGO INSTITUTIONS RANKINGS

ABSTRACT

Abiotic stresses, especially water and saline stress, are the main causes of reduced field emergence percentage. Several studies have associated the higher concentration of proline with the tolerance of cultivars to these stresses. However, one needs to determine how genotype and seed vigor act during seedling formation in the presence of stresses and how proline concentration interacts with these factors. The objective of this work was to evaluate the relationships of proline with genotype and seed vigor in seedling formation under drought and saline stress. The genotypes BAF07, BAF13, BAF23, BAF42, BAF44, BAF55 and BAF112 were used. They were subjected to germination tests under water and saline stress. At ten days after sowing, the following parameters were assessed: length, seedling dry mass and capacity to mobilize reserves, as well as the free proline content of the seedlings. Seed vigor and tolerant genotypes may help overcome water and saline stresses, and they should be used as a strategy during sowing. Also, higher proline concentrations are not associated with higher either vigor of the seed lot or tolerant genotypes.

Keywords:
Germination; Physiological quality; Stress tolerance

SV	DF	RL_3days	HL_3days	TSL_3days	G_3days	U_3days	VI	CRISS	CRIDS
Genotype	6	39.70*	26.27*	48.71*	40.91*	28.54*	45.69*	4.80*	4.88*
Error	14
Total	20
CV	-	6.06	4.52	4.91	5.88	3.04	4.42	5.68	11.35

Genotype	3days	HL_3days	TSL_3days	G_3days	U_3days	VI
BAF07	5.69 c	2.02 c	7.72 d	533 c	747 c	597 c
BAF13	7.85 b	2.44 a	10.30 b	731 b	846 b	772 b
BAF23	6.04 c	2.18 b	8.23 c	566 c	823 b	643 c
BAF42	7.79 b	2.46 a	10.26 b	726 b	879 a	772 b
BAF44	4.50 d	1.65 d	6.16 d	422 d	691 d	502 d
BAF55	8.73 a	2.44 a	11.17 a	810 a	898 a	836 a
BAF112	7.93 b	2.32 b	10.25 b	737 b	882 a	781 b

SV	DF	FGC	G	RL	HL	TSL	RDM
F1	6	23.02*	7.27*	15.88*	9.59*	21.07*	17.97*
F2	2	145.95*	40.96*	888.84*	350.63*	1021.70*	40.07*
F1 x F2	12	1.47^ns	2.31*	3.96*	2.12*	4.32*	3.70*
Error	42
Total	62
CV	-	8.64	3.59	9.37	16.74	8.71	9.21

SV	DF	HDM	TSDM	NSR	RMR	SRRR	Proline
F1	6	18.43*	21.10*	18.94*	49.33*	43.79*	60.69*
F2	2	1128.12*	736.58*	1225.99*	770.69*	1083.85*	318.26*
F1 x F2	12	17.06*	12.31*	5.78*	3.66*	3.66*	17.67*
Error	42
Total	62
CV	-	8.95	7.87	10.09	7.41	6.48	15.23

Genotype	FGC (%)			G (%)
Genotype	Control	Saline	Drought	Control	Saline	Drought
BAF07	82 bA	50 bB	53 bB	95 aA	87 bB	87 aB
BAF13	90 aA	67 aB	69 aB	96 aA	89 aB	91 aB
BAF23	79 bA	55 bB	47 cB	95 aA	83 bB	88 aB
BAF42	95 aA	74 aB	65 aB	97 aA	91 aB	91 aB
BAF44	79 bA	47 bB	43 cB	95 aA	85 bB	77 bC
BAF55	97 aA	73 aB	72 aB	97 aA	93 aB	91 aB
BAF112	90 aA	73 aB	56 bC	97 aA	92 aB	90 aB

Genotype	CRISS	CRIDS
BAF07	4.30 a	5.96 a
BAF13	4.07 b	5.19 b
BAF23	3.66 b	3.85 b
BAF42	4.47 a	5.01 b
BAF44	3.85 b	4.89 b
BAF55	4.37 a	5.98 a
BAF112	3.99 b	4.75 b

Var	T	Genotype
Var	T	BAF07	BAF13	BAF23	BAF42	BAF44	BAF55	BAF112
RL (cm sl^-1)	Control	26.24 b	27.54 b	27.50 b	30.24 a	25.76 b	31.23 a	28.81 a
	Saline	5.02 c	7.07 b	6.36 b	9.34 a	4.84 c	7.18 b	6.56 b
	Drought	18.67 a	21.09 a	11.53 c	22.27 a	14.41 b	20.16 a	16.34 b
HL (cm sl^-1)	Control	12.33 b	11.28 c	8.18 d	10.64 c	9.69 d	12.00 b	14.42 a
	Saline	3.74 a	3.81 a	2.43 c	4.25 a	3.10 b	4.97 a	4.03 a
	Drought	5.08 a	4.29 a	2.13 b	4.05 a	3.15 b	5.48 a	3.71 b
TSL (cm sl^-1)	Control	38.58 b	38.81 b	35.76 b	40.89 a	35.46 b	43.23 a	43.27 a
	Saline	10.04 b	12.46 a	10.14 b	15.29 a	91.68 b	12.97 a	12.46 a
	Drought	21.72 c	26.76 a	14.79 d	27.65 a	18.59 c	30.57 a	23.57 b
RDM (mg sl^-1)	Control	17.57 c	27.89 b	33.23 a	28.07 b	24.35 b	24.42 b	26.57 b
	Saline	16.47 c	18.59 c	26.23 a	21.13 b	17.69 c	19.82 b	21.60 b
	Drought	19.51 b	20.77 b	24.58 a	20.36 b	24.40 a	24.12 a	23.33 a
HDM (mg sl^-1)	Control	57.18 e	69.77 c	98.64 a	69.88 c	63.59 d	71.43 c	89.56 b
	Saline	24.50 b	29.75a	24.90 b	30.95 a	23.12 b	33.60 a	31.58 a
	Drought	25.38 b	24.21 b	18.58 b	22.99 b	20.18 b	32.57 a	26.41 b
TSDM (mg sl^-1)	Control	74.75 e	97.67 c	131.8 a	97.95 c	87.85 d	95.85 c	116.14 b
	Saline	40.98 b	48.34 a	51.14 a	52.09 a	40.81 b	53.42 a	53.18 a
	Drought	44.89 b	44.99 b	43.17 b	43.36 b	44.58 b	56.70 a	49.74 a
NSR (Nr.)	Control	110 b	142 a	127 a	135 a	100 b	138 a	129 a
	Saline	21 a	25 a	23 a	29 a	18 a	23 a	23 a
	Drought	57 b	64 b	35 c	56 b	36 c	79 a	56 b
RMR (%)	Control	43.39 c	48.19 b	38.82 c	55.25 a	40.33 c	53.10 a	50.62 b
	Saline	23.26 b	23.62 b	15.15 c	29.57 a	18.95 c	29.34 a	22.96 b
	Drought	25.73 b	21.93 c	12.84 d	24.44 b	20.79 c	31.55 a	21.66 c
SRRR (%)	Control	64.23 c	71.42 b	62.93 c	76.63 a	63.51 c	79.62 a	76.89 a
	Saline	34.63 b	34.13 b	22.94 d	41.83 a	30.45 c	41.54 a	37.68 b
	Drought	37.41 a	32.79 b	19.46 d	35.08 b	28.41 c	43.03 a	31.59 b
Proline (µmol g^-1 MF)	Control	0.87 a	0.78 a	1.09 a	0.91 a	0.85 a	0.78 a	0.91 a
	Saline	3.01 c	2.71 c	5.71 a	3.05 c	3.85 b	2.39 c	2.75 c
	Drought	3.10 b	3.57 b	8.51 a	2.94 c	3.51 b	2.53 c	3.33 b

Variable	Saline		Drought
Variable	VI	CRISS	VI	CRIDS
RL	0.66*	0.58*	0.55**	0.60*
HL	0.61*	0.75*	0.39^ns	0.94*
TSL	0.74*	0.71*	0.63*	0.81*
RDM	0.80*	-0.14^ns	0.48**	-0.01
HDM	0.22^ns	0.54*	-0.14^ns	0.81*
TSDM	0.71*	0.31^ns	0.33^ns	0.65*
NSR	0.55*	0.58**	0.69*	0.76*
RMR	0.64*	0.84*	0.38^ns	0.88*
SRRR	0.57*	0.82*	0.45**	0.90*
Proline	-0.50**	-0.69*	-0.27^ns	-0.59*
CRISS	0.39^ns	-	-	-
CRIDS	-	-	0.17^ns	-

Variable	Proline (µmol g FW¹)
Variable	Saline	Drought
RL	-0.32^ns	-0.61*
HL	-0.85*	-0.67*
TSL	-0.53**	-0.68*
RDM	0.48**	0.33^ns
HDM	-0.59*	-0.43^ns
TSDM	-0.16^ns	-0.21^ns
NSR	-0.23^ns	-0.57*
RMR	-0.79*	-0.73*
SRRR	-0.84*	-0.77*

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Seed vigor, genotype and proline in common bean seedling formation under drought and saline stress1 1 Part of the first author’s thesis

Vigor de sementes, genótipo e prolina na formação de plântulas de feijão sob estresse hídrico e salino

ABSTRACT

Seed vigor, genotype and proline in common bean seedling formation under drought and saline stress¹ 1 Part of the first author’s thesis