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Comparison of Actual and Predicted Gains in Barley Selection Experiments 1
Author(s) -
Frey K. J.,
Horner T.
Publication year - 1955
Publication title -
agronomy journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 131
eISSN - 1435-0645
pISSN - 0002-1962
DOI - 10.2134/agronj1955.00021962004700040010x
Subject(s) - citation , selection (genetic algorithm) , statistics , library science , agricultural science , information retrieval , mathematics , computer science , psychology , artificial intelligence , biology
SINCE Fisher Best proposed the idea of partitioning variances, numerous experiments have been conducted by animal and plant breeders to determine the relative importance of environmental and genetic variances in heterogeneous populations. The ratio of gsnotypic to total variance was termed "heritability" by Lush. It is possible to find in the literature, heritability percentages for various characteristics in most of the important crop plants. However, the literature is notably void of reports testing the realism of heritability values. The study reported herein was conducted to test the accuracy of heritability percentages for four characters in barley by comparing predicted gains with those jictually obtained in selection experiments. The barley plant characteristics measured, namely, yield, test weight, heading date, and plant height, were each considered to be multigenically inherited.