Indian Society of Genetics & Plant Breeding

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AMMI, GGE biplots and regression analysis to comprehend the G x E interaction in multi-environment barley trials

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The present study was carried out to ascertain the stable
genotypes, environments discrimination and genotype by
environment crossovers using different stability models.
In AMMI ANOVA, genotype x location interaction implied
substantial variation (17.61%) and IPCA1 and IPCA2
altogether captured 65.72% of the interaction mean squares,
whereas, in GGE model, PC1 and PC2 captured 36.34 % and
15.74 % variation, respectively. Four genotypes viz., BH987,
DWRB126, DWRB128 and RD2891and two checks, namely,
DWRUB52 and DWRB92 were found stable as per GGE AEC
view and AMMI biplot. The genotypes, DWRB126 and
RD2891 and check DWRB92 were also observed as
consistent performers by regression model. The test
environments at Bawal, Navgaon and Hisar were observed
representative with better discriminating ability. GGE biplot
model was found suitable for polygon, AEC view and test
environments evaluation.

Keywords: AMMI, GGE, regression, stability, barley

Info

Year: 2016
Volume: 76
Issue: 2
Article DOI: 10.5958/0975-6906.2016.00033.X
Print ISSN: 0019-5200
Online ISSN: 0975-6906

Authors

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A. S. Kharub info_circle
R. P. S. Verma info_circle
Ajay Verma info_circle

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