Analysis of Genotype by Environment Interaction of Improved Pearl Millet for Grain Yield and Rust Resistance

Lubadde, G. and Tongoona, P. and Derera, J. and Sibiya, J. (2017) Analysis of Genotype by Environment Interaction of Improved Pearl Millet for Grain Yield and Rust Resistance. Journal of Agricultural Science, 9 (2). pp. 188-195.

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Abstract

Pearl millet is grown by inhabitants of the semi-arid zones. Due to the unpredictable climatic conditions the genotype-by-environment interaction (GEI) makes it hard to select genotypes adapted to such conditions. The study objectives therefore were to analyse the patterns of GEI and to identify superior genotypes for grain yield and rust resistance. Seventy six genotypes were planted in four environments in 4×19 alpha design with two replications. The ANOVA results showed that main effects of environments were significant (p ≤ 0.05) for grain yield and highly significant (p ≤ 0.001) for rust resistance while the main effects of the genotypes and their interactions with environments were also important for grain yield and rust severity at 50% physiological maturity. The GGE biplot analysis revealed that environments associated with more rains received during vegetative phase performed better than those receiving more rains during post-anthesis phase. The winner in the best environment for grain yield was ICMV3771×SDMV96053 while Shibe×CIVT9206 and Shibe×GGB8735 were the best for rust resistance.

Item Type:	Article
Uncontrolled Keywords:	GGE biplot, Grain yield, Pearl millet, Rust resistance, Uganda
Author Affiliation:	National Semi-Arid Resources Research Institute, Soroti, Uganda
Subjects:	Plant Production Crop Improvement
Divisions:	Millet
Depositing User:	Mr B Krishnamurthy
Date Deposited:	17 Feb 2017 05:13
Last Modified:	17 Feb 2017 05:13
Official URL:	http://dx.doi.org/10.5539/jas.v9n2p188
URI:	http://eprints.icrisat.ac.in/id/eprint/14760

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