ABSTRACT
Genotype and Environment interaction is a common phenomenon in agricultural research and plays a key role in developing strategies for crop improvement. Genotype is the particular assemblage of genes possessed by the individuals. It might be noted that the genes are transferred from the parents to the offsprings, and the genotypes are constituted afresh in each generation until all the genes are fixed. The unpredictable category includes fluctuations in weather, such as amount and distribution of rainfall and temperature, and other factors such as established density of the crop. The phenotypic expression of genotype is rarely constant across the environments; some genotypes do well in some environments, while show poor performance in other environments, which clearly indicate the existence of Genotype and Environment interactions. The relationship among environments is also critically important in plant breeding, especially in determining domains for selection and recommendation of genotypes.
