الفهرس 
IntroductionOnly 14 pages are availabe for public view
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Abstract
Statility of performance is one of the mast :iesiratle
properties of a genotype to be release as a new ~ariety for
wide cultivations. Soybean genotypes, as the other field
crops, have been shown to ~ar~ in stabilitv of performance.
Therefore, soybean breeders nave attempted to select
genotypes that perform well over a wide range of climatic
and edaphic conditions. A number of statistical methods are
now known for estimati~n cf pheno~~pic statilit~. F::; -:f.lS
purpose, unilocational and multilocational trials cc·er a
number of years are commenly used. Further, the regression
approach. originally proposed b\· Yates and Cochran (1938).