Different expressivity of several morphometric and chronometric traits in tomato plants having similar genetic composition in the identical environmental conditions manifested as genotypic residual variation. Using correlation and artificial neural network analyses, we determined the relationship between productivity and other morphochronometric parameters. It was shown that chronology of the development may be important for the determination of productivity. Random epigenetic modifications independent of environmental factors are considered to underlie the residual variation. The different trait expression in different plants may lead to higher phenotypic diversity of a population characterized by low gene polymorphism.
Russian Journal of Genetics – Springer Journals
Published: Oct 13, 2004
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