Adaptation of Jatropha curcas L. in the agroecological environments of Kenya: genotype × environment interactions ana lysis

Abstract

Jatropha curcas L. has the potential for becoming an important feedstock for biodiesel and bioenergy in Kenya. The objective of this study was to evaluate the e"ects of genotype X` environment interaction and to determine the stability of performance of the currently grown genotypes. Methodology:A field trial consisting of 49 genotypes was laid out in a lattice design of two replications in two contrasting agroecological environments, namely Thika and Kibwezi, for 2 years. The Eberhart and Russell stability method was used to measure the performance of yield components of the 49 genotypes. Results: Environmental variance in%uenced the performance of genotypes for all the traits measured and genotype#×#environment interactions were important in determining their performance.