College of Agriculture, University of Riyad, Riyadh, Saudi Arabia.
Theor Appl Genet. 1978 Mar;52(2):73-6. doi: 10.1007/BF00281319.
Heritability estimates of five characters of the wheat plant were studied in five crosses involving six cultivars of bread wheat. Parents, F1, F2 and backcrosses to both parents were used in the estimation of the genetic parameters.Heritability was low for number of fertile spikes/plant, moderate for number of spikelets/spike, number of kernels/spike, 1000-kernel weight and moderately high for number of kernels/spike. Evidence for mainly nonadditive gene effects were observed in the expression of number of fertile spikes and 1000-kernel weight. Although nonadditives contributed to a lesser degree to the gene action, additives seemed to be the most important genetic expression regulating number of spikelets/spike, number of kernels/spike, and number of kernels/spikelet. Except for number of fertile spikes/plant, selection in F2-populations seems to be promising.
对五个小麦品种的五个性状的遗传力进行了研究，涉及六个面包小麦品种的五个杂交组合。在遗传参数估计中，使用了亲本、F1、F2 和回交亲本。每个穗结实小穗数、穗小穗数、穗粒数、千粒重的遗传力低，穗粒数的遗传力中等偏高。在结实小穗数和千粒重的表达中，观察到主要是非加性基因效应的证据。尽管非加性效应对基因作用的贡献较小，但加性效应似乎是调节穗小穗数、穗粒数和穗粒数的最重要遗传表达。除了每个穗结实小穗数，F2 群体的选择似乎很有前途。
