Santos J S, Amaral Júnior A T, Vivas M, Mafra G S, Pena G F, Silva F H L, Guimarães A G
Laboratório de Genética e Melhoramento Vegetal, , , Brasil
Laboratório de Genética e Melhoramento Vegetal, , , Brasil.
Genet Mol Res. 2017 Sep 27;16(3):gmr-16-03-gmr.16039772. doi: 10.4238/gmr16039772.
The present study was conducted to investigate the genetic control and to estimate the general and specific combining abilities of popcorn for agronomic attributes and attributes related to resistance to northern leaf blight (NLB). The 56 hybrids (F and reciprocals), together with the eight parent lines and six controls, were evaluated in two harvests, in a randomized-block design with four replications. Dominance components were more expressive than the additive components for grain yield and expression of resistance, and hybridization was the most suitable option for obtaining resistant and productive genotypes. For grain yield, popping expansion, and resistance to NLB, there was no significance for reciprocal effects, which indicates that the direction in which the cross is performed does not interfere with the hybrid's performance. Then, the superior hybrids recommended for more profitable growth were P8 x L61, L61 x L76, and L61 x L77.
本研究旨在调查爆米花农艺性状和抗北方叶斑病（NLB）相关性状的遗传控制，并估计其一般配合力和特殊配合力。56个杂交种（F1及其反交组合），连同8个亲本系和6个对照品种，在两个收获季进行评估，采用随机区组设计，重复4次。对于籽粒产量和抗性表达，显性成分比加性成分更具表现力，杂交是获得抗性和高产基因型的最合适选择。对于籽粒产量、爆花膨胀率和对NLB的抗性，正反交效应无显著差异，这表明杂交的方向不影响杂种的表现。因此，推荐用于更有利可图种植的优良杂交种是P8×L61、L61×L76和L61×L77。
