【摘要】 采用FISH(荧光原位杂交)技术,分析硬粒小麦(Sauwne 20)染色体的FISH核型特点,为该种质在小麦新品种选育上的应用提供参考。结果表明,Sauwne 20包括14对染色体,Oligo-pTa 535-2红色探针信号主要分布在A组染色体上,而B组染色体上主要分布着明亮丰富Oligo-pSc 119.2-1绿色探针信号;根据这2种探针在Sauwne 20染色体上的分布特点,可以将其不同染色体进行准确地一一鉴别。Sauwne 20与中国春普通小麦的A组和B组染色体的FISH核型基本相似,但又有一定的差别,不同小麦材料间DNA重复序列表现出遗传多样性。更多还原

【Abstract】 In this experiment,FISH(Fluorescence in situ hybridization)technique was applied to analyze FISH patterns characteristics of chromosomes in durum wheat(Sauwne 20),which would provide reference for the application of the germplasm in the breeding of new wheat varieties in the present study.The results showed that Sauwne 20 included 14 pairs of chromosomes,Oligo-pTa 535-2 red signals were mainly distributed on chromosomes of A genome,and the group B genome was mainly distributed with bright and rich oligo-psc119.2-1 green probe signals.According to the distribution characteristics of these two probes on Sauwne 20 chromosomes,different chromosomes can be accurately identified.Generally,Sauwne 20 is basically similar to the FISH karyotype of the chromosome A and B of Chinese spring wheat,but there is a certain difference,and the DNA replication sequence of different wheat materials shows genetic diversity.更多还原