DETECTION OF INTERCHROMOSOMAL TRANSLOCATIONS WITHIN THE TRITICEAE BY RFLP ANALYSIS

被引:40
作者
KING, IP [1 ]
PURDIE, KA [1 ]
LIU, CJ [1 ]
READER, SM [1 ]
PITTAWAY, TS [1 ]
ORFORD, SE [1 ]
MILLER, TE [1 ]
机构
[1] JOHN INNES CTR,NORWICH NR4 7UJ,NORFOLK,ENGLAND
关键词
WHEAT/ALIEN ADDITION AND SUBSTITUTION LINES; RFLPS; TRANSLOCATIONS; WHEAT/ALIEN INTROGRESSION; TRITICEAE; EVOLUTION;
D O I
10.1139/g94-125
中图分类号
Q81 [生物工程学(生物技术)]; Q93 [微生物学];
学科分类号
071005 ; 0836 ; 090102 ; 100705 ;
摘要
Twenty-three wheat/alien addition or substitution lines were screened using restriction fragment length polymorphisms for the presence or absence of 4/5 and 4/7 reciprocal translocations in the alien chromosomes. Such translocations have previously been identified in wheat and rye. Group 4 and group 5 Aegilops umbellulata, Triticum urartu, and Thinopyrum bessarabicum chromosomes were found to carry 4/5 translocations. Evidence for a 4/7 translocation was also found in Secale montanum. The presence of the 4/5 translocations in T. urartu indicates that the translocation predates the polyploidization of wheat. The implications of these results are discussed.
引用
收藏
页码:882 / 887
页数:6
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