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Genetic Diversity Inherent in Vernonia anthelmintica (L.) Willd. 1
Author(s) -
Berry C. D.,
Lessman K. J.,
White G. A.,
Earle F. R.
Publication year - 1970
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/cropsci1970.0011183x001000020019x
Subject(s) - heritability , biology , selection (genetic algorithm) , genetic variation , index selection , genetic diversity , coefficient of variation , genetic correlation , population , horticulture , botany , statistics , evolutionary biology , mathematics , genetics , demography , gene , sociology , computer science , artificial intelligence
Forty selections were used to evaluate inherent genotypic diversity in Vernonia anthelmintica (L.) Willd. Materials were evaluated at two locations during 1966 and 1967 for 11 characters. Analyses of variance indicated significant genotypic variation among lines for all characters except early vigor, days between one‐half and full bloom, and percent vernolic acid. Importance of years in a V. anthelmintica breeding and evaluation program was emphasized by large year × entry effects. Genetic coefficient of variation (GCV) values suggested potential for genetic progress. Broad sense heritability estimates (H) varied from 0.92 to 0.01 for characters evaluated. GCV and H estimates were combined in estimates of expected gain from selection in percent of the mean (GS). Values suggested that substantial changes may be made in population means for most characters evaluated. Phenotypic correlation coefficients indicated simultaneous selection might be practiced for several traits. Selection for good early vigor, early bloom dates, and increased seed number per head also should increase seed and oil yields.