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

摘要：

以5个高粱品系和1个杂交种为试材,研究了不同生长发育时期高粱可溶性糖含量与SS、SPS酶活性的变

化规律及相关性。结果表明,SS与可溶性糖含量在生长后期呈负相关,SPS与可溶性糖含量呈正相关。茎

秆可溶性糖含量一直呈上升趋势,在完熟期达到最大值,此时正是高粱的最佳收获时期。

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