Influence of Nitrogen Sources on SucroseSynthetase(SS) in Sugar Beet
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.