RELATIONSHIP BETWEEN GENETIC-MARKERS AND MORPHOLOGICAL TRAITS IN A MAIZE INBRED LINES COLLECTION

被引:34
作者
BARHEN, A
CHARCOSSET, A
BOURGOIN, M
GUIARD, J
机构
[1] INRA, GENET VEGETALE STN, FERME MOULON, F-91190 GIF SUR YVETTE, FRANCE
[2] GEVES LE MANGNERAUD, F-17700 SURGERES, FRANCE
关键词
GERMPLASM REGISTRATION; MAIZE; ZEA MAYS; ISOZYME; MARKERS; MORPHOLOGICAL TRAITS; MORPHOLOGICAL VARIATION;
D O I
10.1007/BF01677953
中图分类号
S3 [农学(农艺学)];
学科分类号
0901 ;
摘要
Genetic markers (isozymes), in addition to the traits recommended by the UPOV convention, have been used in France since 1989 to characterize the maize inbred lines submitted to registration. In the years 1989, 1990 and 1991, a total of 974 inbreds has been described according to this procedure. Relationships between genetic markers were investigated and underlined the occurrence of linkage disequilibria within the tested germplasm. These disequilibria appeared to depend strongly on the breeding history of the germplasm. In some cases, these disequilibria could be related to a major progenitor (foundation effect). Relationships between genetic markers and quantitative traits were also pointed out. High coefficients of determination (up to 60%) were in some cases observed at the within group level, and also appeared to be very dependent on the major progenitors of the group of interest. The consequences of these results for breeding and distinctiveness studies are discussed.
引用
收藏
页码:145 / 154
页数:10
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