麦田杂草节节麦染色体核型分析研究  

A Study on the Chromosome Karyotype of Ruderal Triticum tauschii L.in cornfield

作　　者：蔡华[1] 乔玉强[1] 王业精[2] 赵茹[2] 张传和[2] 

机构地区：[1]安徽农业大学农学院,合肥230036 [2]安徽科技学院生命科学学院,凤阳233100

出　　处：《种子》2006年第6期4-5,9,共3页Seed

基　　金：国家自然科学基金项目(No.30270825);安徽科技学院自然科学研究项目(No.2RC200547)

摘　　要：对麦田杂草二倍体节节麦(Triticum tauschiiL.)的植株形态特征及根尖细胞染色体核型作了分析,并和六倍体普通小麦(Triticum aestivumL.)中国春核型作比较。结果表明,节节麦的核型公式为2 n=2 x=14=10M+4 SM(2 SAT),在第4号染色体上有一对随体。节节麦染色体组和普通小麦中国春D组全套染色体类型相同,表明这两组染色体具有较强的同源性;但二者在染色体相对长度和臂比值上表现出一定的差异,表明该地区节节麦未参与普通小麦的起源。The morphologic character and chromosome karyotype of ruderal Triticum tauschii L. in cornfield were discussed, at the same time we compared the chromosome karyotype of Triticum tauschii L and Triticurn aestivum L. The results showed ： the karyotype formula of Triticum tauschii L. was 2 n = 2 x = 14 = 10 M ＋ 4 SM（2 SAT）, there were a pair of SAT in No. 4 chromosome, that the genome classification of Triticum tauschii L. and Triticum aestivum L. was same, it shows that there was clear homology in the two genomes; but they were different in chromosome relative length and arm ratio, which indicated that the Triticum tauschii L. in Fengyang did not participate in genesis of Triticum aestivum L.

关 键 词：节节麦 普通小麦 染色体 核型分析 

分 类 号：S451.221[农业科学—植物保护]