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Published in Crop Sci 10:178-180 (1970)
© 1970 Crop Science Society of America
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Genetic Diversity Inherent in Vernonia anthelmintica (L.) Willd.1

C. D. Berry, K. J. Lessman, G. A. White and F. R. Earle2

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 x 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.

Key Words: Interaction • Heritability • Expected gain

1 Contribution from the Purdue University Agricultural Experiment Station, Lafayette, Ind. and the Crops Research and Northern Utilization Research & Development Divisions, ARSUSDA. Journal Paper No. 3836, Purdue AES. This work was supported in part by Agricultural Research Service, U. S. Department of Agriculture, contract number 12-14-100-8153(34), administered by the Crops Research Division, Beltsville, Md.

2 Graduate Research Assistant (now Assistant Professor, Department of Agronomy and Soils, Auburn University, Auburn, Ala.) and Professor, Department of Agronomy, Purdue University, Lafayette, Ind.; Research Agronomist, Crops Research Division, ARS-USDA, Beltsville, Md.; Research Chemist, Northern Utilization Research and Development Division, ARS-USDA, Peoria, Ill.

Received for publication October 15, 1969.




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