Indian Society of Genetics & Plant Breeding

GGE biplot analysis of genotype × environment interaction in rabi grain sorghum [Sorghum bicolor (L.) Moench]

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Nature and complexity of genotype × environment
interaction (GEI) was studied among eight rabi grain
sorghum cultivars across 11 locations during rabi 2011-12
and 2012-13 using GGE biplot analysis. Location (L)
contributed for 89.9% of variation for grain yield, while
genotypes (G) and G × L interactions accounted for 1%
and 9% of variation only. The first two principal
components (PCs) of GGE biplot accounted for 50% of
variation in data for grain yield, which not ideally explained
overall variation in the data. However, the biplot clearly
demonstrated that across environments, SPH 1721 was
the highest yielding stable genotype followed by CSH 15R.
High crossover GEI was recorded among the testing
locations and close correlation among these locations was
not detected. ‘Which-won-where’ analysis detected three
mega-environments (ME) among the testing locations,with
ME1 represented by 5 locations, ME2 with 4 locations and
ME3 with 2 locations. The study indicated the possibility
to reduce the number of testing locations.

Keywords: GGE biplot, GxE interaction, sorghum, mega-environment


Year: 2014
Volume: 74
Issue: Supplementry Issue
Article DOI: 10.5958/0975-6906.2014.00889.X
Print ISSN: 0019-5200
Online ISSN: 0975-6906


A. More info_circle
S. R. Gadakh info_circle
R. B. Ghorade info_circle
S.T. Kajjidoni info_circle
B. G. Solanki info_circle
B. D. Biradar info_circle

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