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本研究的任务在于确定氮素对缺氮所引发的玉米籽粒败育的影响:是直接地由于叶面氮素的供给,还是间接地由于光合作用不足。我们利用茎注液技术,分别注入氮素和蔗糖,以及氮素和蔗糖混合溶液,并利用15氮进行跟踪,分析氮素和糖份对玉米籽粒败育的影响。研究表明:氮素作为同化物直接参与玉米籽粒中蛋白质的合成,同时氮素也提高了蔗糖转化酶的活性,减少还原糖的积累,促进淀粉粒的形成,从而提高籽粒的库容、减少玉米籽粒的败育。
The task of this study was to determine the effect of N on the abortion of maize kernels caused by nitrogen deficiency: directly due to foliar nitrogen supply or indirectly due to insufficient photosynthesis. We use stem infusion technology, respectively, nitrogen and sucrose injection, and nitrogen and sucrose mixed solution, and use of 15 nitrogen to track the effects of nitrogen and sugar on the abortion of maize. The results showed that nitrogen as an isomer directly involved in the synthesis of protein in maize grain, and nitrogen also increased the activity of sucrose invertase, reduced the accumulation of reducing sugar, and promoted the formation of starch grains, thereby increasing the grain storage capacity and reducing the grain weight Abortion.