Identification of wheat-Thinopyrum intermedium 2Ai-2 ditelosomic addition and substitution lines with resistance to barley yellow dwarf virus

文献类型: 外文期刊

第一作者: Lin, ZS

作者: Lin, ZS;Huang, DH;Du, LP;Ye, XG;Xin, ZY

作者机构:

关键词: Triticum aestivum;Thinopyrum intermedium;barley yellow dwarf virus;chromosome substitution;ditelosomic addition line;genomic in situ hybridization;random amplified polymorphic DNA

期刊名称:PLANT BREEDING ( 影响因子:1.832; 五年影响因子:1.956 )

ISSN: 0179-9541

年卷期: 2005 年 125 卷 2 期

页码:

收录情况: SCI

摘要: Among the regenerated plants derived from immature hybrid embryos of wheat-Thinopyrum intermedium disomic addition line Z6 x common wheat variety 'Zhong8601', a plant with a telocentric chromosome and barley yellow dwarf virus (BYDV) resistance was obtained. The telocentric chromosome paired with an entire Thinopyrum chromosome to form a heteromorphic bivalent at meiotic metaphase I. Genomic in situ hybridization showed that the telosome originated from Th. intermedium. Two ditelosomic additions and one disomic substitution were identified among the offspring of the plant. Two random amplified polymorphic DNA molecular markers were identified among 150 random primers used to detect the different arms of the alien chromosome. These might be useful for developing translocation lines with BYDV resistance.

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