Comparison and suitability of genotype by environment analysis methods for yield-related traits of pearl millet
Loading...
Date
2016
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Uganda Journal of Agricultural Sciences
Abstract
Pearl millet (Pennisetum glaucum (L.) R. Br.) is an important food security and income crop for
households living in semi-arid zones in Uganda. However, the genotype by environment interaction,
in addition to the several methods used for its assessment, complicates selection of varieties
adapted to such semi-arid areas. The objective of this study, therefore, was to compare common
methods used to assess stability and adaptability of improved genotypes. Seventy six genotypes
were planted in four environments in an alpha experimental design with two replications. Results
showed that genotype by environment interactions were significant at p<0.05 for grain yield, days
to 50% flowering and 50% physiological maturity, percentage of productive tillers and panicle
area. Results further showed inconsistency in ranking of genotypes between methods; although
Cultivar Superiority, REML, Yield Stability Index and GGE biplot were consistently correlated
and identified high yielding and stable genotypes.
Description
Keywords
GGE biplot, Grain yield, Pearl millet, Stability analysis
Citation
Lubadde, G., Ebiyau, J., Akello, B., & Ugen, M. A. (2016). Comparison and suitability of genotype by environment analysis methods for yield-related traits of pearl millet. Uganda Journal of Agricultural Sciences, 17(1), 51-66. http://dx.doi.org/10.4314/ujas.v17i1.6