关键词: 高粱；蔗糖合成酶(SS)；蔗糖磷酸合成酶(SPS)；酶活性；可溶性糖含量;相关性分析

Abstract:

Five sorghum lines and one hybrid were used to study the changing law of sugar contents

and activities of sucrose synthase (SS) and sucrose phosphate synthase (SPS), the

correlation between soluble sugar contents and activities of SS and SPS on different

phases. The results showed that there are mainly negative correlation between soluble

sugar content and SS enzyme activities in the later growing stage, and mostly positive

correlation between soluble sugar content and SPS enzyme activities. The soluble sugar

content in stems was rising during the whole growing period. It reached the maximum when

sorghum was fully matured. Full-ripe stage is the best phase for harvest.

Key words: sorghum, sucrose synthase(SS), sucrose phosphate synthase(SPS), enzyme activity, soluble sugar content, correlation analysis