Stability analysis of chickpea yield trials using graphical presentation - A new approach

摘要

Yield data from multi-environment trials are usually quite large and it is difficult to grasp the general pattern of the data without some kinds of graphical presentation. The GGE (Genotype and Genotype x Environment) biplot is one of the graphical approaches which allows visual examination of the Genotype x Environment (GE) interaction of multi-environment trials (MET) data. Seven promising lines of chickpea (BG 1003, L 550, ICCV 2, KAK 2, BG 1107, BG 1108 and BG 1105) were evaluated at Jabalpur, Kota, Bharari, Sehore, Rahuri, Banswara and Badnapur. The yield data were subjected to GGE biplot analysis to assess the nature of GE interaction. The results showed that among the genotypes tested, BG 1108 was the best genotype followed by BG 1105 and BG1107 whereas L 550 turned out to be poor on the basis of average yield and stability. Among the locations, Rahuri was the best location based on its discriminating ability and representativeness whereas Kota was the poorest test location. The results suggested two mega environments, one represented by Sehore, Jabalpur and Banswara and another by Kota, Bharari, Badnapur and Rahuri.