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Relationship between Genotype‐Environmental Interaction and Stability Parameters
Author(s) -
MarquezSanchez Fidel
Publication year - 1973
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/cropsci1973.0011183x001300050027x
Subject(s) - gene–environment interaction , interaction , biology , regression , regression analysis , phenotype , statistics , linear regression , genotype , stability (learning theory) , genetics , mathematics , computer science , machine learning , gene
Phenotypic models with and without genotype‐environment interaction (γ IJ ) are represented graphically. For a variety that is planted in several environments the model without interaction is represented as a regression line of phenotypic values on environmental indices, with a slope equal to one and no deviations from regression. In the model with interaction neither of these conditions is fulfilled. The interaction term γ IJ is the deviation of actual phenotypic values from the regression line with slope equal to one, and δ IJ is the deviation of the phenotypic values from the adjusted regression line with slope different from one. A stable variety is defined as one which does not interact with environments.