ANÁLISE DIALÉLICA DE LINHAGENS DE SORGO GRANÍFERO EM CULTIVO NA SEGUNDA SAFRA

Ludmilla Ribeiro da Rocha Gomes; Cícero Beserra de Menezes; Gustavo André Simon; Alessandro Guerra da Silva; Antonio Joaquim Braga Pereira Braz

doi:10.1590/1983-21252020v33n403rc

Authors

Ludmilla Ribeiro da Rocha Gomes Universidade de Rio Verde, Rio Verde, GO https://orcid.org/0000-0001-9335-1480
Cícero Beserra de Menezes Embrapa Milho e Sorgo, Sete Lagoas, MG https://orcid.org/0000-0001-9437-6946
Gustavo André Simon Departament of Agronomy, Universidade de Rio Verde, Rio Verde, GO https://orcid.org/0000-0001-6935-6580
Alessandro Guerra da Silva Departament of Agronomy, Universidade de Rio Verde, Rio Verde, GO https://orcid.org/0000-0002-9556-0312
Antonio Joaquim Braga Pereira Braz Departament of Agronomy, Universidade de Rio Verde, Rio Verde, GO https://orcid.org/0000-0001-5442-3891

DOI:

https://doi.org/10.1590/1983-21252020v33n403rc

Keywords:

Sorghum bicolor. Diallel crosses. Parent selection. Plant breeding.

Abstract

The expansion of sorghum as a succession crop, after soybean, has demanded the development of new inbred lines by the breeding programs. The first step in the selection process consists of evaluating the performance per se of the inbred lines or of their hybrid combination. The purpose of this study was to determine the combining ability of sorghum inbred lines under different environment conditions of the crop production areas. The trials were carried out in the second season of 2017, under no-tillage system, in four environments, Rio Verde, Sete Lagoas, Teresina and Sinop. Thirty hybrids, resulting from the crosses of six fertility restoration lines (R) with five male-sterile lines (A) were evaluated. A randomized complete block design with three replicates was used in all experiments. The characteristics evaluated were flowering, plant height and grain yield. The environment significantly influenced the estimates of general and specific combining ability, which suggests that both effects, additive and dominant, are important in the control of these characters. The restoring lines GI.1 and G1.2 contributed to increasing the grain yield of their hybrids by over 650 kg.ha^-1. Among the male-sterile lines, the best for grain yield were GII.1 and GII.4 with contribution above 450 kg.ha^-1 in the hybrids in which they participate. The hybrid combinations GI.5xGII.3 and GI.1xGII.2 stood out with potential to obtain high grain yield, associating positive aspects of the other characteristics.

Downloads

Download data is not yet available.

References

ALMEIDA FILHO, J. E. et al. Desempenho agronômico e estabilidade fenotípica de híbridos de sorgo granífero. Revista Brasileira de Milho e Sorgo, 9: 51-64, 2010.

BANZATTO, D. A.; KRONKA, S. N. Experimentação Agrícola. 4. ed. Jaboticabal, SP: FUNEP, 2006. 237 p.

BATISTA, P. S. C. et al. Selection of sorghum for drought tolerance in a semiarid environment. Genetics and Molecular Research, 18: 01-11, 2019.

COMPANHIA NACIONAL DE ABASTECIMENTO - CONAB. Acompanhamento da Safra Brasileira de Grãos: 11º levantamento, safra 2018/19. v. 6, n. 11. Brasília, DF: Conab, 2019.

CRUZ, C. D.; CARNEIRO, P. C. S.; REGAZZI, A. J. Modelos biométricos aplicados ao melhoramento genético. 3. ed. rev. e ampl. Viçosa, MG: UFV, 2014. 668 p.

EMPRESA BRASILEIRA DE PESQUISA AGROPECUÁRIA - EMBRAPA. Sistema Brasileiro de Classificação de Solos. 3. ed. Rio de Janeiro, RJ: EMBRAPA, 2013. 353 p.

GRIFFING, B. Concept of general and specific combining ability in relation to diallel crossing systems. Australian Journal of Biological Sciences, 9: 463-493, 1956.

KENGA, R.; ALABI, S. O.; GUPTA, S. C. Combining ability studies in tropical sorghum (Sorghum bicolor (L.) Moench). Field Crops Research, 88: 251-260. 2004.

KUMAR, A. A. et al. Recent advances in sorghum genetic enhancement research at ICRISAT. American Journal of Plant Sciences, 2: 589-600, 2011.

MAHDY, E. E; ALI, M. A; MAHMOUD, A. M. The effect of environment on combining ability and heterosis in grain sorghum (Sorghum bicolor L. Moench). Asian Journal of Crop Science, 3: 1-15, 2011.

MAKANDA, I. et al. Combining ability and cultivar superiority of sorghum germplasm for grain yield across tropical low- and mid-altitude environments. Field Crops Research, 116: 75-85, 2010.

MENEZES, C. B. et al. Combining ability of grain sorghum lines selected for aluminum tolerance. Crop Breeding and Applied Biotechnology, 14: 42-48, 2014.

MENEZES, C. B et al. Capacidade combinatória de linhagens e seleção de híbridos de sorgo granífero. Revista Brasileira de Milho e Sorgo, 16: 509-523, 2017.

PRAKASH, R. et al. Combining ability for fodder yield and its components in Sorghum (Sorghum bicolor L). Electronic Journal of Plant Breeding, 1: 124-128, 2010.

ROONEY, W. L. Sorghum improvement - integrating traditional and new technology to produce improved genotypes. Advances in Agronomy, 83: 37-109, 2004.

ROONEY, W. Sorghum breeding. In: ACQUAAH, G. (Ed.). Principles of plant genetics and breeding. 2. ed. Chichester: Wiley-Blackwell, 2012. cap. 34, p. 617-627.

SANTOS, F. G.; CASELA, C. R.; WAQUIL, J. M. Melhoramento de sorgo. In: BORÉM, A. (Ed.). Melhoramento de espécies cultivadas. 2. ed. Viçosa, MG: UFV, 2005. v. 1, p. 429-466.

TADESSE, T.; TESSO, T.; EJETA, G. Combining ability of introduced sorghum parental lines for major morpho-agronomic traits. SAT eJournal, 6: 1-7, 2008.

TARDIN, F. D. et al. Avaliação agronômica de híbridos de sorgo granífero cultivados sob irrigação e estresse hídrico. Revista Brasileira de Milho e Sorgo, 12: 102-117, 2013.

VENCOVSKY, R.; BARRIGA, P. Genética biométrica no fitomelhoramento. 1. ed. Ribeirão Preto, SP: SBG, 1992. 496 p.

ZANATTO, I. B. et al. Identificação de caracteres relacionados à precocidade e produtividade em híbridos de sorgo via correlações canônicas. Revista Científica Intelletto, 1: 89-94, 2016.