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Estimates of Genetic and Environmental Variability in Soybeans 1
Author(s) -
Johnson Herbert W,
Robinson H. F.,
Comstock R. E.
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/agronj1955.00021962004700070009x
Subject(s) - state (computer science) , mathematics , algorithm
RiCENT studies on a number of characters of soybeans have been directed toward estimation of heritability, that is, the fraction of variance in phenotypic expression that arises from genetic effects. However, the different methods employed do not necessarily estimate the same thing. For example, variance and regression methods of estimating heritability of F2 plant differences estimate the same thing only if all gene effects are additive. The nature of the selection units (plant, plot, mean of several plots, etc.) and sampling errors also influence greatly the magnitude of heritability estimates. Therefore, any meaningful comparison of the estimates obtained in different situations must include a careful evaluation of the methods and materials employed