MAINTENANCE OF INTERCHANGE HETEROZYGOSITY IN CULTIVATED RYE, SECALE-CEREALE L

被引:22
作者
CANDELA, M
FIGUEIRAS, AM
LACADENA, JR
机构
[1] Departrnento de Genética, Universidod Corn plutense, Madrid
关键词
D O I
10.1038/hdy.1979.31
中图分类号
Q14 [生态学(生物生态学)];
学科分类号
071012 ; 0713 ;
摘要
The maintenance for several generations of interchange heterozygosity in both experimental and cultivated fields of rye is analysed. An experimental analysis of interchange heterozygotes has been carried Out to ascertain whether only one or several translocations exist in the population. Interchange heterozygosity is discussed on the basis of the karyotypic orthoselection model. The maintenance of a constant frequency (20 per cent) of structural heterozygotes for several generations suggests the existence of an equilibrium. The possible mechanisms involved in such an equilibrium are discussed. © 1979 The Genetical Society of Great Britain.
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页码:283 / &
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