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番茄抗叶霉病基因Cf19的抗性范围基本涵盖了中国目前分化出的所有叶霉菌生理小种,且抗性显著;台盼蓝染色结果显示该基因介导的抗性应答中出现明显的超敏反应,强度介于Cf4和Cf9基因之间;遗传连锁分析说明该基因的遗传特性符合单基因显性遗传规律;通过进一步SSR和AFLP分子标记连锁分析,共找到6个与Cf19基因连锁的分子标记,并将该基因初步定位于番茄1号染色体短臂区域。
The resistant range of tomato leaf mold resistant gene Cf19 basically covers all the leaf mold isolates that have been differentiated in China at present, and has significant resistance. The results of trypan blue staining showed that the resistant gene Cf19 was significantly The sensitivity was between the Cf4 and Cf9 genes. The genetic linkage analysis indicated that the genetic characteristics of the gene were in accordance with the single gene dominant inheritance rule. Through further SSR and AFLP molecular marker linkage analysis, 6 molecules linked to Cf19 gene were found The gene was initially located in the short arm region of chromosome 1 of tomato.