GENOTYPE-ENVIRONMENT INTERACTION STUDIES IN WHEAT (TRITICUM AESTIVUM L.) BY PRINCIPAL COMPONENT ANALYSIS IN DISTRICT POONCH AZAD JAMMU AND KASHMIR PAKISTAN

Ten wheat genotypes were grown to analyze the G x E interaction effects and evaluate the stability of yield and yield component at three different locations. The yield stability of ten wheat genotypes was investigated through genotype x environment interaction by using principal component analysis (PCA) techniques at three different locations. In PCA, first two principal components PC1 and PC2 were used to create biplot diagrams. Visualizing the mean yield and stability of the genotypes indicated that genotypes Saleem-2000, Haider-2000 Aquab-2000, Wafaq-2001 and NARC-2010 were suitable in priority sequence for adaptation at three locations. All other genotypes showed great genotype x environment interaction with less yields than mean yield. The vector view of biplot showed that Rawalakot and Arja were positively correlated on the bases of spike length, biological yield, grain yield and harvest index, but had no relationship with Hajira both of the two year. But on the bases of spikelet per spike, grains per spike and 1000-grain weight Hajira positively correlated in one year but in the next year Rawalakot and Arja showed positive association. It was concluded that these five genotypes showed high mean yield and high yield stability across all these environments and hence recommended for this area.