Indian Society of Genetics & Plant Breeding

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Study on genotype x environment interactions and AMMI analysis for agronomic traits in mungbean (Vigna radiata L. Wilczek.) under rainfed conditions

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In the present study, 23 genotypes of mungbean were
evaluated for stability performance under different
environments continuously for three years during
kharif
2016 (E1), 2017 (E2) and 2018 (E3) under rainfed conditions.
Genotype Pusa Vishal exhibited regression coefficient equal
to unity with non-significant deviation from regression
coefficient and hence showed wider adaptability under poor
or good environments. Genotype EC520016 showed
earliness in maturity with wider adaptability. Environmental
indices indicated that environment E
2 and E3 were most
favourable for yield and majority of yield attributing traits,
whereas E
3 alone was important for seed yield/plant and
number of seeds/ pod. Based on AMMI models, Pusa Vishal,
PD139, IPM2-3, IPM2057 and PML2-14 showed higher IPCA
scores coupled with high population mean in E
3. AMMI2
analysis indicated ML2056, and K851 with high IPCA1 in E
3
whereas IPM99-125, BM63 and PM2-14 with high IPCA2 in
the same environment. Genotypes which positioned very
close to centre point and are least effected by G x E
interactions while those presented away from the point of
centre are more affected by G x E interactions and hence
not stable. Identified genotypes may be utilized in
improvement programme of
Vigna radiata for targeted
environments.
  

Keywords: AMMI analysis, GEI, principal components, stability, agronomical traits, mungbean

Info

Year: 2020
Volume: 80
Issue: 3
Article DOI: 10.31742/IJGPB.80.3.19
Print ISSN: 0019-5200
Online ISSN: 0975-6906

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