Comparative study on different nonparametric stability measures in soybean

M. Manjubala
R. Vasanthi
Patil Santosh Ganapati
R. Pushpam
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Abstract

The assessment of stable genotypes to a wide range of environments is important for recommending cultivars in plant 
breeding programme. Therefore, twenty four genotypes of soybean were tested over three environments in Tamil Nadu. The 
stability analysis of GxE interaction observed data is mostly handled by parametric methods. If any assumptions of 
parametric methods are violated, the result of these methods may be questionable. The nonparametric measures are easy to 
analyse and simple to interpret which have more advantages than parametric methods. In this paper, nine nonparametric 
methods were used for identification of stable genotype and association among these measures were checked by correlation. 
According to Principle component analysis, nonparametric measures were divided into three groups Group 1 included Kang 
ranksum, NPi(1), NPi(2), NPi(3) and NPi(4), Group 2 included Si(3) and Si(6). Group 3 included Si(1) and Si(2). According to nonparametric measures, G17 is the stable one

Keywords Soybean, Non parametric measures, Stability, GE interaction
Published 23/02/26