Indian Society of Genetics & Plant Breeding

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Genotype environment interaction analysis for fruit yield in okra (Abelmoschus esculentus L.) under alkaline environments

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Twenty four Okra genotypes were evaluated for marketable
fruit yield and its related traits for genotype environment
interaction during 2015-16 and 2016-17. The genotypes were
exposed to alkaline environment with a pH range of 8.0±0.2,
8.5±0.2, 9.0±0.2 and 9.5±0.2. A significant level of deviation
in expression of different traits was observed in all the
genotypes with increasing pH. Based on Additive Main
Effects and Multiplicative Interaction (AMMI), Genotype and
Genotype Environment Interaction (GGE) biplot, Wrick’s
ecovalence (Wi
2), AMMI Stability Value (ASV) and Yield
Stability Index (YSi) stable genotypes with high fruit yield
were identified over the eight environments. The combined
AMMI analysis of variance indicated that genotype main
effect, environment and genotype-by-environment
interaction effects showed variation of 19.83%, 63.07% and
17.10%, respectively for fruit yield. On the basis of different
stability measures, VRO-112, VRO-110, Kashi Kranti, VROB-
178, AE-70 and VRO-108 were differentiated as high yielding
and stable genotypes over the tested environments. This
study will be helpful for selecting alkali tolerant okra parents
for further breeding programme and recommending the
suitable genotypes for alkalinity prone area.

Keywords: Yield stability, AMMI, GGE, okra, yield traits

Info

Year: 2021
Volume: 81
Issue: 1
Article DOI: 10.31742/IJGPB.81.1.11
Print ISSN: 0019-5200
Online ISSN: 0975-6906

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