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笔者从中国农业科学院烟草研究所获悉,近日,该所对一个白茎突变体(ws1)的遗传分析与基因定位研究获得重要突破。ws1是通过化学EMS诱变中烟100获得的一个烟草白色茎秆突变体,遗传分析表明,该突变性状受两对独立的隐性核基因(ws1a和ws1b)控制,且只有两对基因同为隐性纯合时植株才表现为白茎性状。应用烟草SSR分子标记,在2
The author learned from the Chinese Academy of Agricultural Sciences Institute of Tobacco, recently, the Institute of white stem mutant (ws1) genetic analysis and gene mapping important breakthroughs. ws1 is a tobacco white stalk mutant obtained by chemical EMS mutagenesis of Nicotiana tabacum 100. Genetic analysis showed that this mutant trait is controlled by two independent recessive nuclear genes (ws1a and ws1b) and only two pairs of genes are the same Hidden homozygous plants showed white stem traits. Apply tobacco SSR markers at 2