番茄叶色黄化突变体的遗传分析及SSR分子标记

在番茄普通栽培品种中蔬4号06884中发现能稳定遗传的叶色黄化突变体06883,该突变体新出叶最初为绿色,四叶一心时第一片真叶开始转黄,果实转色慢,硬度大耐贮藏。通过该突变体和栽培品种中蔬4号的正反交试验的遗传分析证明,该突变材料的叶片黄化性状由1对隐性主效核基因控制,该性状可以用来作为指示性状鉴定杂种纯度。应用SSR分子标记技术对该突变基因进行初步定位,经连锁分析表明,该基因与LEaat006、LEtat002和Tom196-197连锁,与它们的连锁距离分别为8.9、16.3和18.7cM。

Genetic Analysis and SSR Molecule Marker on Tomato Yellow Leaf Mutant

A natural yellow leaf mutant named 06883, found in tomato（Lycopersicon esculentum Mill.）variety‘Zhongshu No.4’, can be inherited stably. Originally the leaves were green, but the first true leaf color turned into yellow during the period of four leave and one shoot. The fruits turned to red slowly, and became hard which is good for storage. The mutant was reciprocally crossed with tomato variety‘Zhongshu No.4’, and the genetic analysis indicated that the mutant is nucleolus inheritance and controlled by one recessive gene. It can be used as a phonotypical marker to identify purity of F1 hybrids. We roughly mapped the mutant gene using SSR molecular markers. Three SSR markers LEaat006, LEtat002 and Tom196-197 were linked to the mutant gene. They were 8.9 cM, 16.3 cM and 18.7 cM apart from the mutant gene, respectively.