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Yield Stability of Dry Bean Genotypes in the Dominican Republic 1
Author(s) -
Beaver J. S.,
Paniagua C. V.,
Coyne D. P.,
Freytag G. F.
Publication year - 1985
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/cropsci1985.0011183x002500060006x
Subject(s) - phaseolus , biology , yield (engineering) , productivity , genotype , regression analysis , dry season , dry bean , gene–environment interaction , regression , linear regression , horticulture , agronomy , zoology , mathematics , statistics , ecology , biochemistry , materials science , gene , economics , metallurgy , macroeconomics
The seed yield and stability of performance of dry bean ( Phaseolus vulgaris L.) genotypes grown in the Dominican Republic were measured using data from the 1981–1982 and 1982–1983 growing seasons. Genotype‐environment interactions were analyzed using regression techniques. Heterogeneity among regression coefficients accounted for a significant portion of the genotype‐environment interaction. The determinate red‐mottled genotypes that are grown widely in the Dominican Republic produced seed yields equal to or less than the mean of the tests, had an average yield response to environments of varying levels of productivity, and showed significant deviations from regression. On the other hand, indeterminate genotypes such as blackseeded ‘La Vega’ and white‐seeded 2W‐33‐2 produced greater than average mean seed yields, had an average or greater than average response to environments of varying levels of productivity, and possessed minimum deviations from regression during both growing seasons. These results suggest that the development of indeterminate red‐mottled genotypes might improve the yield level and stability of this bean class.