General and specific combining ability in sweet sorghum

Rocha, Mara Jane da; Nunes, José Airton Rodrigues; Parrella, Rafael Augusto da Costa; Leite, Pakizza Sherma da Silva; Lombardi, Gabrielle Maria Romeiro; Moura, Mayra Luiza Costa; Schaffert, Robert Eugene; Bruzi, Adriano Teodoro

doi:10.1590/1984-70332018v18n4a55

Acessibilidade / Reportar erro

Brasil

Crop Breeding and Applied Biotechnology

Español English

Brasil

Español English

sumário « anterior atual seguinte »

Sumário

ARTICLE • Crop Breed. Appl. Biotechnol. 18 (04) • Dec 2018 • https://doi.org/10.1590/1984-70332018v18n4a55 copy

General and specific combining ability in sweet sorghum

Authorship SCIMAGO INSTITUTIONS RANKINGS

Abstract

In breeding of sweet sorghum hybrids, non-additive genetic effects are important in phenotypic expression of the traits of interest. The aim of this study was to evaluate the general combining ability (GCA) of sweet sorghum lines and the specific combining ability (SCA) of the hybrids for agronomic and technological traits. Five fertility restorer lines, four male-sterile lines, and their hybrids from partial diallel crosses were evaluated in experiments laid out in a 5 x 6 triple rectangular lattice design in the municipalities of Lavras, MG and Sete Lagoas, MG, Brazil. Diallel analysis was performed using the Griffing model adapted to partial diallel crosses. There was a significant effect of GCA and SCA for most of the traits evaluated, indicating the participation of additive or dominant genes in inheritance. The restorer lines CMSX508, BRS 511, CMSXS643, and CMSXS646 show potential for use as parents in sorghum breeding programs.

Keywords:
Sorghum bicolor; parent selection; partial diallel; hybrid breeding

Sources of variation	F-Statistics
Sources of variation	df	FLOW¹	df	PH	PGM	EXT	TSS	TRS	ETH
Site (S)	-	-	1	9.62**	9.42*	18.94*	263.43**	247.25**	174.7**
Genotypes (G)	(29)	14.36**	29	27.57*	15.94**	1.83*	7.15**	4.11**	9.78**
GCA A	3	2.56	3	2.51	7.05*	0.46	5.69*	3.63*	6.70*
GCA R	4	17.84*	4	0.40	7.97*	6.84*	19.52*	11.35*	1.57
SCA	(20)	4.84*	20	17.78*	11.03*	1.56	6.04*	3.93*	9.75*
G x S			29	1.80*	2.23**	1.52	3.45**	2.34**	3.43**
GCA A x S			3	2.44	1.31	1.31	11.40*	8.13*	8.26*
GCA R x S			4	2.09	4.21*	2.20	3.72*	3.26*	3.72*
SCA x S			20	10.31*	2.57*	1.72*	2.47*	2.06*	2.90*
Mean/LA		85.61		2.92a	61.87a	67.92b	14.23a	81.31a	3758.13a
Mean/SL				2.78b	54.68b	70.02a	10.11b	54.82b	2133.03b
Mean/A		81.70b		1.70b	31.60b	68.92a	10.35b	59.64b	1383.53b
Mean/R		92.85a		3.05a	62.29a	69.23a	12.07a	65.7a	3013.87a
Mean/Hybrids		84.51		2.82	57.57	69.00	12.62	70.93	3242.19
Mean/Check		87.09		3.27	66.81	67.33	10.78	56.67	2936.23
r_ĝg LA (%)		96.46		98.73	96.52	60.41	93.18	86.3	94.19
r_ĝg SL (%)				94.06	92.27	63.33	84.62	75.84	86.55

Line/Hybrid	Trait
Line/Hybrid	FLOW	PH	PGM	TSS	TRS	ETH
CMSXS5504A	3.07*	-0.37*	-10.04*	-1.46*	-10.16*	-907.82*
CMSXS5505A	3.09*	-0.48*	-11.48*	-0.51	0.93	-422.9
CMSXS5503A	1.25	-0.45*	-10.94*	-1.41*	-9.34*	-793.32*
CMSXS5508A	1.08	-0.65*	-14.42*	-0.95*	-6.79*	-1086.71
BRS 511	-1.22	-0.41*	-8.80*	-0.71*	-3.94	-515.7*
BRS 508	1.49*	-0.52*	-7.73*	-1.19*	-7.23*	-696.66*
CMSXS643	3.88*	-0.41*	-12.83*	-0.64*	-3.48	-669.40*
CMSXS646	3.23*	-0.31*	-10.70*	-0.94*	-6.82*	-791.54*
CMSXS647	1.12	-0.29*	-6.82*	-0.85*	-3.96	-537.45*
CMSXS5504A x BRS 511	-0.48	0.17*	3.8	1.55*	11.23*	609.46*
CMSXS5504A x BRS 508	-2.04*	020*	7.78*	1.01*	7.06*	674.21*
CMSXS5504A x CMSXS643	-1.48	0.20*	3.82	-0.29	-2.67	-23.92
CMSXS5504A x CMSXS646	-1.67	0.11	4.25	0.19	5.55	498.61*
CMSXS5504A x CMSXS647	-0.45	0.07	0.44	0.46	-0.85	57.26
CMSXS5505A x BRS 511	0.84	0.22*	1.86	-0.09	-1.86	-57.06
CMSXS5505A x BRS 508	0.22	0.20*	3.54	0.38	-0.48	200.11
CMSXS5505A x CMSXS643	-2.84*	0.23*	4.23	0.27	0.58	135.12
CMSXS5505A x CMSXS646	-1.77	0.1	3.5	0.19	-0.38	128.07
CMSXS5505A x CMSXS647	-2.65*	0.20*	9.81*	0.27	0.28	439.56*
CMSXS5503A x BRS 511	1.41	0.14	3.22	0.26	0.79	139.66
CMSXS5503A x BRS 508	-1.96*	0.23*	8.25*	-0.1	1.76	531.37*
CMSXS5503A x CMSXS643	-1.31	0.29*	4.95	0.61	4.37	306.61
CMSXS5503A x CMSXS646	-1.81*	0.15*	1.8	1.67*	9.59*	394.08*
CMSXS5503A x CMSXS647	1.17	0.1	3.68	0.38	2.26	214.94
CMSXS5508A x BRS 511	0.68	0.29*	8.72*	-0.31	-2.28	339.34
CMSXS5508A x BRS 508	0.79	0.43*	-4.13	1.09*	6.10*	-12.37
CMSXS5508A x CMSXS643	-2.13*	0.11	12.67*	0.70*	4.66	920.99*
CMSXS5508A x CMSXS646	-1.2	0.26*	11.87*	-0.17	-1.12	562.33*
CMSXS5508A x CMSXS647	-0.31	0.22*	-0.29	0.58	6.23*	363.13
Standard deviation (S_kk)	0.73	0.06	2.03	0.28	2.32	147.56
Standard deviation (S_k'k')	0.69	0.06	1.93	0.27	2.2	139.99
Standard deviation (S_kk')	0.9	0.08	2.52	0.35	2.86	182.23

Crop Breeding and Applied Biotechnology Universidade Federal de Viçosa, Departamento de Fitotecnia, 36570-000 Viçosa - Minas Gerais/Brasil, Tel.: (55 31)3899-2611, Fax: (55 31)3899-2611 - Viçosa - MG - Brazil
E-mail: cbab@ufv.br

Acompanhe os números deste periódico no seu leitor de RSS

[1] * E-mail: jarnunes@dbi.ufla.br