期刊论文

中文

湖南农业大学学报(自然科学版)

1007-1032

2001

27

6

421-424

10.3321/j.issn:1007-1032.2001.06.002

国家科技部“九五”重点攻关项目 （95 - 0 0 1- 0 1-0 2 ）；

本校为第一机构

为探明羧甲基壳聚糖对水稻氮代谢的调控效果,以湘晚籼6号和湘晚籼9号为材料,用0.2%的羧甲基壳聚糖水溶液喷施水稻始穗期叶片.结果表明,羧甲基壳聚糖对水稻氮代谢具有一定的调控作用,能够明显提高齐穗期叶片内硝酸还原酶、谷氨酰胺转化酶、谷氨酰胺合成酶、蛋白水解酶的活性,其中,对谷氨酰胺转化酶和蛋白水解酶活性的增强作用可持续到乳熟后期,并能增加叶片可溶性蛋白质含量和籽粒内全氮、蛋白氮的含量.

In order to test the regulation effect of carboxymethyl chitosan on rice nitrogen metabolism,Xiangwanxian 6 and Xiangwanxian 9 were used as samples.Under the treatment of carboxymethyl chitosan(concentration of 0.2% water solution),the nitrate reductase,glutamine transversase,gl-utamine synthetase and protease activities of top 3 rice leaves at the heading stage were increased obrionsly,and the enhancement on the activities of glutamine transversase and protease continues till the late .The amount of soluble protein in leaf and the amount of total nitrogen and protein nitrogen in rice grain we...