三种酸浆属植物的染色体核型分析

本文报导了采用根尖分生组织常规压片法,按Leva(?)等人的染色体分类方法和Stebbins的核型不对称性分类标准对挂金灯(Physalis alkekengiVar.francheti)、通肯酸浆(ph.ixocarpa)及毛酸浆(ph.pubescens)等三种酸浆属(physalis)植物进行染色体核型分析的结果,为探讨该属植物的进化、分类及品种选育提供了基础资料。

Karyotype analysis of 3 species of genus physalis

The Prisent paper reports chromosome numbers and karyoxtyqe analysis of 3 species of genus physalis. They are physalis alkekengi Var. francheti distributed in our country cultivated plantsxph. ixbcarpa and ph. pubescens originated in America.The karyotype formula of ph. alkekengi Var. francheti is K(2n)=2x=24=8M(2SAT)+6m(2SAT)+10sm(4SAT). The karyotype has"2A"type. The karyotype formula of ph. ixocarpa is K(2n)=2x=24=4M(2SAT)+8m(4SAT)+8sm+4st(SAT), the karyotype has"2A"type. The karyotype formula of ph. pubescens is K(2n)=2x=24=2M(SAT)+2sm(SAT)+ 20st(8SAT), the karyotype has "3A"type. The result shows karyotype differences among the 3 Species of genus physalis are bigger. The karyotype of ph. alkekengi Var. francheti and ph. ixocarpa are very similar, and both karyotypes are relatively primitive, but ph. pubescens is relatively advanced.