Publication Date
1989
Description
White clover (Trifolium repens L.) is a very important forage legume in temperate grasslands. Mass selection, maternal line selection and synthetics are used in most cases of white clover breeding. Usually these breeding methods are cyclical schemes of selection by which frequencies of favorable genes are increased in the population, and such selections represent recurrent selection in its broadest sense (Hallauer, 1981). However, in a narrow sense it seems that a recurrent selection procedure, by which parents of superior families or strains are maintained by means of lines, is more promising for the improvement of outcrossing species. The greatest problem concerning the utility of this selection procedure for a white clover breeding program is the production and maintenance of inbreeding lines, since white clover possesses a gametophytic self-incompatibility system. Fortunately, however, a self-compatibility factor has been reported in white clover, and this factor is inherited in a simple Mendelian way (Atwood, 1942; Yamada et al., in press). In the present study we evaluated the progenies from crosses between self-incompatible and selfcompatible plants and examined the possibility of applying self-compatible plants to recurrent selection procedures for white clover.
Citation
Yamada, T; Higuchi, S; and Fukuoka, H, "Recurrent Selection of White Clover (Trifolium repens L.) using Self-Compatibility Factor" (2025). IGC Proceedings (1989-2023). 1.
https://uknowledge.uky.edu/igc/1989/session3b/1
Included in
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Recurrent Selection of White Clover (Trifolium repens L.) using Self-Compatibility Factor
White clover (Trifolium repens L.) is a very important forage legume in temperate grasslands. Mass selection, maternal line selection and synthetics are used in most cases of white clover breeding. Usually these breeding methods are cyclical schemes of selection by which frequencies of favorable genes are increased in the population, and such selections represent recurrent selection in its broadest sense (Hallauer, 1981). However, in a narrow sense it seems that a recurrent selection procedure, by which parents of superior families or strains are maintained by means of lines, is more promising for the improvement of outcrossing species. The greatest problem concerning the utility of this selection procedure for a white clover breeding program is the production and maintenance of inbreeding lines, since white clover possesses a gametophytic self-incompatibility system. Fortunately, however, a self-compatibility factor has been reported in white clover, and this factor is inherited in a simple Mendelian way (Atwood, 1942; Yamada et al., in press). In the present study we evaluated the progenies from crosses between self-incompatible and selfcompatible plants and examined the possibility of applying self-compatible plants to recurrent selection procedures for white clover.
