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Mapping of Stem‐Rust Genes Sr9 and Srl6 of Wheat 1
Author(s) -
Sears E. R.,
Loegering W. Q.
Publication year - 1968
Publication title -
crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.76
H-Index - 147
eISSN - 1435-0653
pISSN - 0011-183X
DOI - 10.2135/cropsci1968.0011183x000800030032x
Subject(s) - stem rust , biology , centromere , chromosome , genetics , long arm , gene , rust (programming language) , botany , computer science , programming language
The stem‐rust genes Sr9a from Red Egyptian and Srl6 from Thatcher, previously known to be located on chromosome 2B with little or no linkage between them, were mapped by means of telocentric chromosomes. Both genes lie on the long arm, and they showed 10.6% and approximately 50% crossing‐over, respectively, with the centromere. Male transmission of telocentric 2B L in competition with the entire 2B from Red Egyptian and Thatcher was 23.6% and 16.0%, respectively, as compared with only 0.4% and 4.1% for telo‐2Bs.