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Component Interaction in Relation to Heterosis for Plant Height in Phaseolus vulgaris L. Variety Crosses 1
Author(s) -
Coyne D. P.
Publication year - 1965
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/cropsci1965.0011183x000500010007x
Subject(s) - phaseolus , heterosis , variety (cybernetics) , biology , agricultural experiment station , relation (database) , citation , crop , horticulture , library science , mathematics , agriculture , computer science , agronomy , ecology , hybrid , statistics , database
MANY complex traits in plants can be partitioned into two or more independent component parts or processes. For example, the components of plant height in beans are internode number and length. Several investigators (4, 6, 1) have reported that the genetic basis of heterosis for a complex trait can be explained by the multiplicative interaction on the phenotypic level of the components of the trait. An explanation of heterosis based on the multiplicatire interaction of components of plant height has been reported previously by Keeble and Pellew (4) on stature peas, Williams (6) on yield in tomato, and Duarte and Adams (1) on leaf area in beans. The results of a study of the interaction of the components of plant height in the parents and F1 of two Phaseolus vulgaris variety crosses are reported in this paper. The varieties used in the study differ in internode number and length. The indeterminate (vine type) PI 209806 Yellow Eye variety has more internodes but shorter internode length than indeterminate Nebraska :#:1. The determinate (bush) Dark Red Kidney variety has a small number internodes but the average internode length is about the same as Nebraska :#:1. Emerson (2, 3) reported that the plant habit in beans is determined by a single major gene pair, indeterminate habit being completely dominant to the determinate habit.