摘要
Genomic in situ hybridization banding （GISH-banding）, a technique slightly modified from conventional GISH, was used to probe the Chinese native rye （Secale cereale L.） DNA, and enabled us to visualize the individual rye chromosomes and create a universal reference karyotype of the S. cereale chromosome 1R to 7R. The GISH-banding approach used in the present study was able to discriminate S. cereale chromosomes or segments in the wheat （Triticum aestivum L.） background, including the Triticale, wheat-rye addition and translocation lines. Moreover, the GISH-banding pattern of S. cereale subsp. Afghanicum chromosomes was consistent with that of Chinese native rye cv. Jingzhou rye; whereas the GISH-banding pattern of Secale vavilovii was different from that of S. cereale, indicating that GISH-banding can be used to study evolutionary polymorphism in species or subspecies of Secale. In addition, the production and application of GISH-banding to the study of adenine-thymine-riched heterochromaUn is discussed.
Genomic in situ hybridization banding （GISH-banding）, a technique slightly modified from conventional GISH, was used to probe the Chinese native rye （Secale cereale L.） DNA, and enabled us to visualize the individual rye chromosomes and create a universal reference karyotype of the S. cereale chromosome 1R to 7R. The GISH-banding approach used in the present study was able to discriminate S. cereale chromosomes or segments in the wheat （Triticum aestivum L.） background, including the Triticale, wheat-rye addition and translocation lines. Moreover, the GISH-banding pattern of S. cereale subsp. Afghanicum chromosomes was consistent with that of Chinese native rye cv. Jingzhou rye; whereas the GISH-banding pattern of Secale vavilovii was different from that of S. cereale, indicating that GISH-banding can be used to study evolutionary polymorphism in species or subspecies of Secale. In addition, the production and application of GISH-banding to the study of adenine-thymine-riched heterochromaUn is discussed.
基金
the National Natural Science Foundation of China (30671288and 30730065)
