Analysis of sugar cane variety trials. I. Components of variance and genotype-environment interactions

摘要

Surgarcane variety trial data from Barbados and Jamaica were analysed by the analysis of variance. From these analyses, components of variance were estimated in an attempt to quantify genotype x environment interactions. Sixteen sets of trials from Barbados and eight from Jamaica were analysed. The results show that GE effects in both countries were small. It is suggested, on the basis of these analyses that variety trials could use resources more efficiently by growing them at fewer sites, since the absence of site x variety interaction makes each site equally effective for identifying the best genotypes.