Genotype by environment interaction and study of sugar yield stability in the sugarcane cultivars in Khuzestan locations by stability criteria

The effects of genotype by environment interactions on the sugar yield of 26 promising sugarcane cultivar and 4 standard cultivars (CP48-103, CP57-614,CP69-1062 and NCO310) as checks were investigated for new Plant,first Ratoon and second Ratoon at three locations (Amirkabir, Imam Khomeini and Mian-Ab Agro-Industries) and for three cropping seasons (2008-2010). Combined analysis was done with regard to fixed effects of treatment and location and random effect year. Effect of year, Location, year × location and treatment were found to be significant (P <0. 01) and Effect of treat × location was found to be significant (P <0. 05). To investigate the stability of genotypes were tested, use the Rick, Shukla, Eberhart-Russell, simultaneous selection, AMMI and SHMM methods. Wrick, Shukla, Eberhart and Russell, Simultaneous Selection and SHMM method in their stable clones listed, 8/29 to jointly introduce. Analysis based on AMMI showed that the genotypes /, 1/113, 1/26, 6/60 and 6/8 by assigning the lowest genotype by environment interactions and highest average yield are as the most stable genotypes and clone 6/8 to account very low the interaction among the clones studied were identified as the most stable genotype. Such that the results this method was similar with the results of Eberhart and Russell method and the average rating and standard deviations can proposed rating and Eberhart and Russell methods as a suitable method after two AMMI and SHMM method.