摘要
不同氮素形态对蔗糖合成酶 (SS)活性影响不同 ,硝态氮促进SS分解活性 ,氨态氮则促进SS合成活性。生育前期SS分解活性大于SS合成活性 ,有利于器官的形态建成 ,而在生育后期SS合成活性大于SS分解活性 ,则有利于根中蔗糖的形成。生育前期根中的SS分解活性较强 。
Influence of nitrogen sources on the activity of sucrose synthetase(SS) is different. Nitrate nitrogen can improve the decomposition activity of SS (SS-D), but ammonium nitrogen can improve the synthetic activity of SS(SS-S).In prophase of sugar beet life, it advantages morphogenesis of organ when SS-D> SS-S, and in postphase of sugar life, it advantages formation of sucrose in sucrose beet roots, when SS-S>SS-D. In prophase of sugar beet life, the activity of SS-D is higher than that of SS-S in sucrose beet roots, this indicates that there is redecomposition after sucrose synthesis.
出处
《黑龙江农业科学》
2001年第2期11-12,共2页
Heilongjiang Agricultural Sciences
基金
国家自然科学基金资助项目
关键词
蔗糖合成酶
氮源
甜菜
sucrose synthesis
nitrogen sources
sugar beet
