甘蔗产量与糖分的相关性及其基因型与环境互作的差异

CORRELATION AND GENOTYPE-ENVIRONMENT INTERACTIONS FOR CANE YIELD AND SUGAR CONTENT IN SUGARCANE

甘蔗产量与田间锤度呈较密切遗传负相关,而与环境的相关不显著.产量的基因型与环境互作比田间锤度的大.即产量对环境的反应比田间锤度敏感.改变栽培环境以提高产量不会导致糖分明显降低.以单位面积产糖量作为甘蔗的育种目标。比以高产高蔗糖百分率作为育种目标更为现实.

Cane yield shows a close negative correlation with brix in the cane,but no significant correlation with the environment.The genotype-environment interaction for cane yield is greater than that for brix in the cane.In other words,cane yield is more sensitive to envi- ronment than sugar content.A comprehensive change in the cultural environment for rais- ing cane yield will not necessarily result in a decrease in sugar content.Higher sugar yield per unit area as the primary goal in sugarcane breeding is more practical than higher cane yield or sucrose rate.