摘要
采用p=6的p(p+1)/2双列设计,研究大麦籽粒的蛋白质含量(PC)和麦胶含量(GC)的遗传,并发展了检测遗传效应和变异的统计方法。结果表明,PC和GC的遗传表达均主要由三倍体胚乳的核基因控制,没有显著的细胞质效应。PC和GC的遗传则均符合加世-显性模型,加性、显性和环境(测定)的方差估计效 和,在PC 依次为6.4608,1.2741和0.0277.在GC依次为71.5020,11.0551和2.6754。显性的方向和程度随亲本和组合而有不同,平均而言,PC是增效基因为显性,GC是增效基因为隐性。文中还分析了三倍体和二倍体模型参数的对应关系,提出改良PC和GC的育种策略。
The inheritance of grain protein content(PC )and gum content(GC )in barley was investigat-ed in a p(p+ 1)/2 diallel design with p= 6,and the statistical method was developed for testing the geneticeffects and variations. The results showed that the genetic expression of PC and GC was mainly subject to thegenotypes of triploid endosperm,and the cytoplasmic effect was insignificant.The additive-dominance modelwas adequate to beth PC and GC,Estimates of the additive,dominant and environmental(measuremental)variances,and,were 6.460 8,1.274 1 and 0.027 7 for PC,and 71.502 0, 11.0551 and 2. 6754for GC,respectively. The direction and degree of dominance varied with parents and hybrids,but on the av-erage,the increasing alleles were dominant for PC and recessive for GC,respectively. The corresponding rela-tionship between the genetic parameters in triploid and diploid models was demonstrated.The breeding strate-gy for improving PC and GC was discussed.
出处
《江苏农学院学报》
CSCD
1995年第2期39-46,共8页
Jiangsu Agricultural Research
基金
农业部重点
关键词
大麦
蛋白质
遗传
麦胶
barley
proteins/genetic model
gum