二棱大麦茎杆特性的ADAA模型的遗传研究

以二棱大麦(Hordeum，distichumL.)甘木二条等7个品种进行半双列杂交，对1992年和1997年的亲本、F

Genetic Study of ADAA Model on Culm Traits in Two-Rowed Barley

A half-diallel analysis of plant height and its components has been carried out for parents, F1 and F2 of 1992 and 1997 of 7 two-rowed barley varieties by using additive-dominance- epistatic model (ADAA). Result indicates that plant height of 1992 is higher than that of 1997. Shorter plant could be screened with in the crosses which is crossed with Risl508 or Supi 1. Plant height and internodes length (except for the third) are mainly controlled by additive effects, and each trait has a high narrow-sense hereditary ability and brood-sense hereditary ability. Estimation. of gene effects shows that in the progenies of crosses with risl508, supi 1 and Ganmuertiao as parents, shorter plant was more likely selected. The analysis of interaction of additive effects indicates that plant height for each variety shows differences in different environments. Moreover there are additive-additive interaction effects for parents (except Zipidamai). The progenies of Ganmuertiao, Supi 1 and risl508, and progenies of Supi 1 and Zhenongda 3, Zipidamai have shorter plants.