Indian Society of Genetics & Plant Breeding

Genotype by environment interactions for grain yield in upland breeding lines of rice under direct seeded conditions across multienvironments

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 Eighteen rainfed upland breeding lines were evaluated
under four environments in randomized complete block
design with three replications. Data on grain yield were
subjected to combined ANOVA and AMMI analysis. The
AMMI model was applied, with additive effects for the 18
breeding lines of rice genotypes (G) and four seasons of
testing (Environments = E), and multiplicative term for
genotype × environment interaction.The AMMI statistical
model has shown that more than 50% proportion of the
total variation in grain yield was attributed due to genotype
× environment interaction. Most of the breeding lines
showed environment specificity. CR2897-11-1 and CR2881-
8-1 were found to be favorable during 2011 (En. 4) and
CR2908-12-5-1 and CR2899-7-1 were found to be favorable
in the year 2010 (En. 3) with grain yield more than 3 t ha–1.

Keywords: Rice, AMMI, upland, stability


Year: 2015
Volume: 75
Issue: 1
Article DOI: 10.5958/0975-6906.2015.00017.6
Print ISSN: 0019-5200
Online ISSN: 0975-6906



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