Adaptation Analyses of Wheat Genotypes in Different Agra-ecological Zones of Pakistan Through the Use of Various Biometrical Techniques

Abstract

Abstract:The current zoning system appears unduly complicated and of little relevance to wheat breeding, as there is no evidence of distinct target areas. A broad but sparser sampling than the present system is recommended. Overall adaptation should be routinely assessed, by ranking and AMMI analyses, from the resultant smaller data sets each year. There is strong evidence of a flow of germplasm far superior than Pak-81, with respect to both yield and adaptation. It is suggested that same genotypes should be tested at least for two years on the same locations to get better results.