Biplots and their application in multi-environment trials data analysis
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Date
2017
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CCSHAU
Abstract
The present study was intended towards the general principle of construction of biplots and
their use in analysis of genotype versus environment interactions data. Various types of biplots have
been described for wheat yield data from five locations of Haryana and six locations of North India.
The software UB biplot was used for construction of different types of biplots in general while
GGEbiplotGUI software was used for solving different purposes in analysis of G×E data which
specially analyze GE data. Principal component analysis, Multidimensional scaling and Nonlinear
biplots were constructed to highlight methodologies used in construction of biplots. In particular,
genotype plus genotype × environment interaction biplots were constructed to solve many of problems
faced by breeder and agricultural scientists which generally use PCA biplot. Though, scientists and
breeder exploit GE data in a number of modes in their breeding programs. Six types of GGE biplots
indicating similarities-dissimilarities among genotypes, relationships among environments, evaluation
of test environments, mega-environment analysis, evaluation of genotypes and ranking of genotypes
were constructed by analysis of GE data.
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