PHYSICAL AND PHYSIOLOGICAL ATTRIBUTES OF SAVED COWPEA SEEDS USED IN THE BRAZILIAN SEMI-ARID REGION

Silva, Fernando Henrique Alves da; Torres, Salvador Barros; Carvalho, Sara Monaliza Costa; Bai, Manuela; Lopes, Welder de Araújo Rangel

doi:10.1590/1983-21252019v32n112rc

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Agronomia • Rev. Caatinga 32 (01) • Jan-Mar 2019 • https://doi.org/10.1590/1983-21252019v32n112rc copy

PHYSICAL AND PHYSIOLOGICAL ATTRIBUTES OF SAVED COWPEA SEEDS USED IN THE BRAZILIAN SEMI-ARID REGION¹ 1 Paper extracted from the Master’s dissertation of the first author.

ATRIBUTOS FÍSICOS E FISIOLÓGICOS DE SEMENTES SALVAS DE FEIJÃO-CAUPI UTILIZADAS NO SEMIÁRIDO BRASILEIRO

Authorship SCIMAGO INSTITUTIONS RANKINGS

ABSTRACT

This study evaluated the physical and physiological attributes of saved cowpea seeds (Vigna unguiculata L. Walp.) used in the Brazilian semi-arid area and compared them with certified seed varieties. The study tested 37 saved seed samples from the state of Rio Grande do Norte and two varieties of certified seeds (“BRS Guariba” and “BRS Pujante”) from the production field of Embrapa Products and Market, Petrolina, PE, Brazil. The seeds were tested for moisture, hectoliter weight, weight of 1,000 seeds, and physical purity to evaluate the physical quality. Germination, first germination count, field emergence, emergence rate index, shoot dry mass, and accelerated aging were tested for physiological quality. The saved cowpea seeds showed great differences, suggesting the influence of genetic variability and different growing environments. The use of saved cowpea seeds by small farmers in the semi-arid areas of Northeastern Brazil is impractical, because these seeds have inferior physical and physiological qualities compared to certified cowpea seeds.

Keywords:
Vigna unguiculata; Physical quality; Certified seed; Physiological potential

Samples	M (%)		HW (kg/hL)		WTS (g)		PP (%)
Certified seeds
“BRS Guariba”	10.8	f	82.4	a	204	l	100
“BRS Pujante”	8.9	d	76.0	g	236	g	99.8
Saved seeds
1	12.5	d	73.6	i	228	g	99.5
2	12.5	d	69.6	n	267	d	100.0
3	10.9	e	73.2	j	191	m	99.0
4	10.4	e	72.8	j	191	m	99.8
5	10.6	e	79.6	d	169	o	99.6
6	12.7	d	72.0	l	264	d	98.8
7	10.1	f	68.0	o	253	e	100.0
8	14.3	c	78.4	e	290	c	99.6
9	12.2	d	76.0	g	159	p	100.0
10	10.5	e	77.2	f	352	a	100.0
11	10.3	e	72.8	j	219	h	97.9
12	13.0	d	74.4	i	184	n	97.1
13	13.7	c	72.0	l	191	m	99.1
14	16.7	b	72.0	l	263	d	98.8
15	11.2	e	73.6	i	233	g	99.8
16	12.3	d	72.8	j	180	n	99.7
17	12.0	d	74.0	i	282	c	99.9
18	12.7	d	76.8	f	177	n	98.3
19	9.9	f	69.6	n	240	f	98.3
20	15.7	b	78.0	e	168	o	99.9
21	10.3	e	70.0	n	195	m	100.0
22	10.7	e	77.2	f	219	h	99.9
23	11.1	e	72.4	l	207	j	99.3
24	21.3	a	72.4	l	235	g	100.0
25	15.0	b	76.0	g	237	g	98.0
26	12.9	d	82.0	b	201	l	98.8
27	9.5	f	65.2	q	245	f	99.5
28	11.4	d	73.6	i	203	l	98.0
29	11.4	d	66.0	p	289	c	99.9
30	14.5	c	73.2	j	302	b	100.0
31	12.9	d	73.2	j	212	i	98.9
32	12.0	d	80.4	c	221	h	98.8
33	11.6	d	75.2	h	213	i	99.9
34	10.9	e	70.8	m	256	e	99.9
35	12.0	d	73.2	j	207	j	99.8
36	11.4	d	76.0	g	184	n	99.9
37	10.6	e	66.4	p	250	e	99.5
C.V. (%)	4.64		0.2		3.78		-

Samples	G		FGC		FE		ERI		SDM		AA		M/AA
	(%)		(%)		(%)				(g)		(%)		(%)
Certified seeds
“BRS Guariba”	98	a	97	a	94	a	15.9	a	13.4	b	92	a	22.5
“BRS Pujante”	99	a	97	a	98	a	15.4	a	13.8	b	93	a	24.3
Saved seeds
1	82	d	81	c	93	a	15.2	a	11.8	c	85	b	25.3
2	95	b	90	b	92	a	15.4	a	12	c	87	b	22.1
3	93	b	92	b	94	a	15.8	a	10.7	d	84	b	29.2
4	97	a	94	a	97	a	16.3	a	11.8	c	95	a	23.2
5	95	b	88	b	94	a	15.1	a	8.7	e	95	a	23.1
6	97	a	95	a	82	b	16	a	14.8	a	84	b	22.9
7	93	b	92	b	93	a	14.9	b	12	c	83	b	24.1
8	88	c	83	c	92	a	15	a	13.5	b	86	b	16.9
9	92	c	90	b	76	b	12.8	c	8.5	e	73	d	24.9
10	94	b	95	a	83	b	13.9	b	15.4	a	89	b	20.8
11	89	c	84	c	93	a	14.8	b	11.9	c	85	b	24.7
12	98	a	96	a	85	b	14.2	b	9.7	d	84	b	25.2
13	90	c	87	c	84	b	14.6	b	9.9	d	86	b	26.9
14	96	b	84	c	88	a	14.5	b	13	c	97	a	18.9
15	73	f	60	e	77	b	11.2	c	8.4	e	6	g	25.3
16	85	d	84	c	92	a	14.6	b	8.3	e	71	d	29
17	85	d	79	d	89	a	14.6	b	13.3	b	78	c	17.7
18	88	c	84	c	80	b	13.5	b	7.8	e	37	e	22.5
19	90	c	81	c	94	a	15.5	a	13	c	81	c	21.3
20	98	a	97	a	90	a	15	a	8.5	e	78	c	28.5
21	89	c	86	c	90	a	14.7	b	10.1	d	76	c	28.5
22	72	f	74	d	89	a	14.7	b	10.1	d	84	b	23.5
23	75	f	74	d	82	b	13.5	b	10.9	d	78	c	22.9
24	39	g	28	f	43	c	7.5	d	4.7	f	15	f	25.2
25	73	f	60	e	75	b	12.2	c	9.1	d	68	d	19.1
26	82	d	77	d	86	b	14.4	b	10.1	d	79	c	27.5
27	79	e	77	d	85	b	13.9	b	11.5	c	72	d	24.7
28	90	c	79	d	92	a	13.9	b	10.5	d	69	d	22.3
29	95	b	90	b	90	a	14.2	b	15.5	a	78	c	17.5
30	89	c	88	b	74	b	12	c	10	d	75	c	17.2
31	92	c	91	b	82	b	13.7	b	8.5	e	70	d	23.8
32	94	b	89	b	91	a	15.6	a	13	c	87	b	21.6
33	96	b	97	a	87	a	14.7	b	10.8	d	77	c	25.7
34	89	c	89	b	92	a	15.1	a	13.8	b	79	c	22.5
35	90	c	85	c	84	b	13.9	b	9.6	d	69	d	9.9
36	95	b	91	b	89	a	13.7	b	9.3	d	40	e	25.3
37	97	a	92	b	93	a	14.4	b	11.9	c	81	c	18.7
C.V. (%)	3.28		4.9		8		6.73		11.89		6.3

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[1] *Corresponding author: fernandosilvasr@hotmail.com.

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PHYSICAL AND PHYSIOLOGICAL ATTRIBUTES OF SAVED COWPEA SEEDS USED IN THE BRAZILIAN SEMI-ARID REGION1 1 Paper extracted from the Master’s dissertation of the first author.

ATRIBUTOS FÍSICOS E FISIOLÓGICOS DE SEMENTES SALVAS DE FEIJÃO-CAUPI UTILIZADAS NO SEMIÁRIDO BRASILEIRO

ABSTRACT

PHYSICAL AND PHYSIOLOGICAL ATTRIBUTES OF SAVED COWPEA SEEDS USED IN THE BRAZILIAN SEMI-ARID REGION¹ 1 Paper extracted from the Master’s dissertation of the first author.