不同品种春玉米籽粒蔗糖积累规律的研究

Studies on the accumulation of sucrose in gains of different spring maize

试验以高淀粉玉米(四单19)、普通玉米(东农250)、优质蛋白玉米(丰禾10)为材料,研究氮素用量对春玉米籽粒蔗糖合成的影响,揭示蔗糖合成过程中蔗糖合成酶(SS)和蔗糖磷酸合成酶(SPS)的调节作用。结果表明,氮素用量适当有利于提高玉米籽粒中蔗糖含量、蔗糖合成酶(SS)合成方向活性和蔗糖磷酸合成酶(SPS)活性,并且证实了蔗糖合成酶(SS)和蔗糖磷酸合成酶(SPS)能促进春玉米籽粒蔗糖积累。

This experiment utilized high starch maize Sidanl9, common maize Neau.250, good quality pro-tein maize Fenghe10 as material, studied on the effect of nitrogen application on the sucrose metabolizing in gains of spring maize. The research indicated that SS and SPS had controlled sucrose content in process of sucrose synthesis. The results showed that proper rate of nitrogen application could increase the content of sucrose, the activities of SS and SPS in gains, and the SS and SPS could increase the accumulation of sucrose in gains of spring maize.