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Genetic Improvement of Soybeans in the Midwest 1
Author(s) -
Wilcox J. R.,
Schapaugh W. T.,
Bernard R. L.,
Cooper R. L.,
Fehr W. R.,
Niehaus M. H.
Publication year - 1979
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/cropsci1979.0011183x001900060014x
Subject(s) - cultivar , biology , yield (engineering) , glycine , agronomy , gene–environment interaction , horticulture , botany , genotype , amino acid , gene , materials science , metallurgy , biochemistry
Five group II and five group III soybean [ Glycine max (L.) Merr.] cultivars released over a 50‐year period were grown at 12 location‐year combinations in the Midwest to evaluate genetic changes for seed yield, plant height, lodging, seed protein, and oil content and for phenotypic stability for seed yield. Current cultivars yielded 25% more seed than the original plant introductions in both maturity groups. Changes for the other characteristics were not consistent, however. Regression of cultivar means on environmental indices showed a consistent, linear increase in seed yield across the range of test environments, indicating equal stability for yield among the cultivars tested.