THE CONTRIBUTION OF MOLECULAR-GENETIC DIVERGENCE TO F1 HYBRID PERFORMANCE OF WHITE CABBAGE
Abstract
The prediction efficiency of white cabbage F1 hybrid performance based on ISSR and RAPD markers was carried out. In result molecular-genetics evaluation of white cabbage collection, five divergent lines were selected and tested by full diallel (5×5) mating design. Through analysis relationship genetic divergence of parental lines and F1 hybrid performance the significant correlations (r > 0.5) were found for the main yield components. Yield potential of half-diallel F1 hybrids was predetermined total GD by 67.2 % (R = r2), whereas no significant associations were found for reciprocal F1. Consequently, heterotic response does not simply result from the overall genetic diversity within a hybrid, but is likely only diversity at some specific loci causing the formation of superior F1 genotype with high expression of the traits.
About the Authors
M. N. SHAPTURENKO
Институт генетики и цитологии НАН Беларуси, Минск
Belarus
Belarus
A. V. YAKIMOVICH
Институт овощеводства НАН Беларуси, Минск
Belarus
Belarus
Y. M. ZABARA
Институт овощеводства НАН Беларуси, Минск
Belarus
Belarus
L. V. KHOTYLEVA
Институт генетики и цитологии НАН Беларуси, Минск
Belarus
Belarus
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