Indian Society of Genetics & Plant Breeding

Interpreting the effects of genotype x environment interaction on cane and sugar yields in sugarcane based on the AMMI model

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Field experiments were conducted in six environments (2
water regimes x 3 crops) during 2005-07 to study the effect
of genotype x environment interaction (GEI) on cane and
sugar yields in sugarcane (Saccharum spp.). Analysis of
variance of 11 genotypes revealed that genotype,
environment, and GEI were highly significant. Highly
significant GEI effects indicated the necessity for testing
newly developed genotypes under different environments.
The additive main effects and multiplicative interaction
(AMMI) model was used to interpret the GEI. The first two
IPCAs of the AMMI analysis of GEI accounted for 90.39%
of this variation for cane yield and 92.54% for sugar yield.
AMMI-1 biplot showed that genotype LG 03001 had very
good cane yield with specific adaptation to the 1st year
and 2nd year plant crop under optimum condition. For
sugar yield, LG 03001 and LG 03002 were better adapted
to the 2nd year plant crop under normal and moisturedeficit conditions, respectively, Considering only the IPCA-
1 scores, BO 91 (average yielder) and LG 03007 (poor
yielder) were the most stable for cane yield, whereas BO
91 was more stable in terms of sugar yield. AMMI-2 biplot
indicated that LG 03003 for cane yield and LG 03007 and
BO 91 for sugar yield had small interaction with
environments, reflecting their stability in yield performance
across environments.

Keywords: Sugarcane, AMMI model, G x E interaction, stability


Year: 2009
Volume: 69
Issue: 3
Article DOI: N/A
Print ISSN: 0019-5200
Online ISSN: 0975-6906


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