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Combining Ability of Transgressive Segregates in Sugarbeets 1
Author(s) -
Hecker R. J.
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/cropsci1968.0011183x000800010002x
Subject(s) - transgressive , transgressive segregation , biology , population , inbred strain , gene , genetics , demography , quantitative trait locus , sedimentary depositional environment , paleontology , structural basin , sociology
Transgressive segregation in an F 2 generation for increased root size in sugarbeets (Beta vulgaris L,) indicates the presence of genes with additive effects which condition this character. These genes are probably not unique to the inbred parents of this F 2 . Seven interpollinated transgressive segregants produced heavier roots than an interpollinated random sample from the F 2 . However, the combining ability of these seven transgressive segregants was not different from that of an F 2 random sample, or a less intensely selected group of 64 plants. This study indicates that individuals superior because of additive genes may have no better combining ability than a random sample from their parent population.