Heritability of Efficiency in Phosphorus Utilization in Beans (Phaseolus vulgaris L.) Grown under Phosphorus Stress1

in Journal of the American Society for Horticultural Science
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  • 1 University of Wisconsin, Madison, WI 53706

Abstract

The heritability of efficiency in phosphorus utilization under deficiency stress was investigated using 6 bean families derived from crosses between selected efficient, moderately inefficient, and inefficient lines. Total plant dry weight (DW) was used as an index of efficiency. Epistasis, notably additive by additive and dominance by dominance gene effects, made imyor contributions to the efficiency in P utilization. Additive and dominance gene effects also made significant contributions. Estimates of broad sense heritability for total plant DW showed that efficiency in P utilization was a highly heritable trait. Narrow sense heritability estimates for total plant DW were high in all families studied.

Contributor Notes

Received for publication August 4, 1980. Research supported by the Oyo State of Nigeria Government and the College of Agricultural and Life Sciences, University of Wisconsin, Madison. This investigation is a portion of a thesis presented in partial fulfillment of the requirements for the PhD degree.

The cost of publishing this paper was defrayed in part by the payment of page charges. Under postal regulations, this paper therefore must be hereby marked advertisement solely to indicate this fact.

Present address: Institute of Agriculture, Research and Training, P.M.B. 5029, Ibadan, Nigeria.