引言Kasha和Kao(1970)与Kao和Kasha(1970)的许多研究证明了二倍体球茎大麦与二倍体普通大麦的种间杂种F_1,由于选择性的排除了球茎大麦染色体的结果,大部分植株是“似普通大麦型”的单倍体。由上述两个种的四倍体之间杂交所获得的高频率双单倍体也同样证明了这一情况。而且,还证明了这种选择性的染色体排除的控制基因是在普通大麦方面(Kasha等1972;Ho和Kasha 1974; INTRODUCTION Many studies by Kasha and Kao (1970) and Kao and Kasha (1970) have demonstrated that interspecific hybrid F1 of diploid corm and barley common barley, as a result of the exclusion of chromosomes from bulbous barley, most The plant is a haploid body that resembles a common barley type. This is also demonstrated by the high frequency doubled haploid obtained from the cross between the two tetraploids. Moreover, it has also been demonstrated that this selective chromosomal exclusion control gene is found in common barley (Kasha et al 1972; Ho and Kasha 1974;