摘要
本文通过对大麦86个体细胞无性系后代叶绿素缺失突变的分析表明,R_1代突变株是一个由突变穗与非突变穗组成的嵌合体,整个R_1穗由一个原基细胞分化而成,不存在穗水平的嵌合体。各种叶绿素缺失均系核基因突变所致,浅绿和黄化受单个位点的隐性基因所控制,而白化则受两对互作基因作用,其中一个位点的显性基因对另一个位点的显性白化基因的表达起抑制作用。
86 somaclones of barley being used as materials, the mutated chimerism, size of sector and the inheritance of chlorophyll-defficient were investigated.Results showed that the R_1 mutated plant was a genotypic chimera composed of mutated and normal spikes.No chimera on spike level was discovered, indicating that a whole spike originated from one initial cell.All kinds of chlorophyll—defficient was due to nuclear gene mutation.Viridis and xantha were conditioned by a single recessive gene.Albino was controlled by two interactive genes, and the dominant gene of one loco could inhibite the expression of the dominant albino gene of the other loco.
出处
《浙江农业学报》
CSCD
1992年第A09期30-34,共5页
Acta Agriculturae Zhejiangensis
关键词
大麦
体细胞无性系
遗传
Barley
Somaclone
Chlorophyll-defficient mutation
