Akram Zahid, Ajmal Saif Ullah, Kiani Ali Asghar, Jamil Muhammad
Department of Plant Breeding and Genetics, University of Arid Agriculture, Rawalpindi, Pakistan.
Pak J Biol Sci. 2007 Jun 15;10(12):1990-5. doi: 10.3923/pjbs.2007.1990.1995.
The study was carried out to investigate the nature of gene action determining the inheritance pattern of protein, lysine, gluten and flour yield in eight wheat varieties (Pak 81, Pothowar 93, Parwaz 94, Shahkar 95, Suleiman 96, Chakwal 97, Kohistan 97 and MH 97) selected on the basis of phenotypic diversity. In order to ascertain the gene action involved in the inheritance of these characters, the techniques like analysis of variance of Hayman model and genetic component analysis were employed. The estimates of components of genetic variation showed that additive genetic effects controlled the expression of traits like protein contents and flour yield, however, non-additive gene effects were more important for lysine contents and gluten contents. Directional dominance was observed in case of protein contents, which indicated the possibility of further improvement in this particular trait. Protein contents and flour yield being controlled by additive genetic effects with partial dominance suggested that selection could be practiced in early segregating generations for improvement in these traits.
本研究旨在调查基于表型多样性选择的八个小麦品种（Pak 81、Pothowar 93、Parwaz 94、Shahkar 95、Suleiman 96、Chakwal 97、Kohistan 97和MH 97）中决定蛋白质、赖氨酸、面筋和面粉产量遗传模式的基因作用性质。为了确定这些性状遗传中涉及的基因作用，采用了海曼模型方差分析和遗传成分分析等技术。遗传变异成分的估计表明，加性遗传效应控制了蛋白质含量和面粉产量等性状的表达，然而，非加性基因效应对于赖氨酸含量和面筋含量更为重要。在蛋白质含量方面观察到定向显性，这表明该特定性状有进一步改良的可能性。蛋白质含量和面粉产量受加性遗传效应控制且具有部分显性，这表明可以在早期分离世代进行选择以改良这些性状。
