Genotype x environment interaction and adaptability for productive traits in sugarcane

Fourteen sugarcane genotypes of early maturity group were grown in three different environments such as I plant, II plant and ratoon crops during 2007-08 to 2008-09 consecutive years. Eleven traits viz.-cane yields, CCS yield, CCS %, sucrose %, Brix %, Purity %, Number of milliable cane, Average cane weight, Milliable height, cane diameter, & Extraction%, were studied during present investigation. The variance of genotypes (G) & Environment (E) individually both shows highly significant at 1 % and 5% both at pooled error respectively, except extraction % and Milliable height .Which were found to be significant at 5% at pooled deviation only. The G X E interaction was found highly significant for all the traits except CCS % and Purity %. This had indicated that considerable variability among the genotypes with respect to productive traits in each (three) environment. The variance of environment liner was also found highly significant for all the productive traits at 1 % & 5 % at pooled deviation and pooled error except Milliable height which was found highly significant at only 5 % at pooled deviation.