| 生长调节剂对玉米氮代谢的影响 |
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| 引用本文： | 荣湘民,谢桂先,刘强,彭建伟,朱红梅.生长调节剂对玉米氮代谢的影响[J].植物营养与肥料学报,2005,11(5):634-640. |
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| 作者姓名： | 荣湘民 谢桂先 刘强 彭建伟 朱红梅 |
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| 作者单位： | 1.湖南农业大学资源环境学院 湖南长沙410128 |
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| 基金项目： | 教育部科学技术研究项目，湖南省教育厅青年基金 |
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| 摘 要： | 采用田间小区试验,研究了植物生长调节剂不同配方对玉米光合特性、氮素代谢以及玉米子粒产量与蛋白质含量的影响。结果表明,调节剂不同配方处理能明显提高子粒灌浆期玉米功能叶叶绿素的含量和净光合速率,功能叶与茎秆中的全氮和蛋白氮的减少量,功能叶的硝酸还原酶、谷氨酰胺合成酶与转化酶活性及子粒谷氨酰胺合成酶与转化酶活性;灌浆中、后期玉米功能叶蛋白水解酶活性和玉米子粒产量、子粒蛋白质含量及蛋白质产量。在生长调节剂中,PGR4处理玉米子粒的蛋白氮含量比对照提高1.35.g/kg,子粒产量比对照增加9.5%,子粒蛋白质产量比对照增加19.6%;PGR3处理玉米子粒的蛋白氮含量比对照提高0.78.g/kg,子粒产量比对照增加11.4%,子粒蛋白质产量比对照增加17.4%,是较合理的配方。
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| 关 键 词： | 玉米 生长调节剂 光合特性 氮代谢 关键酶 |
| 文章编号： | 1008-505X（2005）05-0634-07 |
| 收稿时间： | 2004-01-18 |
| 修稿时间： | 2004年1月18日 |
Effects of plant growth regulator on nitrogen metabolism of maize |
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| RONG Xiang-min,XIE Gui-xian,LIU Qiang,PENG Jian-wei,ZHU Hong-mei.Effects of plant growth regulator on nitrogen metabolism of maize[J].Plant Nutrition and Fertilizer Science,2005,11(5):634-640. |
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| Authors: | RONG Xiang-min XIE Gui-xian LIU Qiang PENG Jian-wei ZHU Hong-mei |
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| Affiliation: | 1.College of Resources and Environment;Hunan Agriculture University;Changsha 410128;China |
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| Abstract: | Maize is a crop with low protein. Increasing protein content and grain yield of maize has become a focal concern for maize cultivation. Applying plant growth regulator (PGR) to regulate carbon metabolism and nitrogen metabolism of maize may be a promising approach to increase protein resource. A field experiment was conducted to compare the (effects) of PGRs with different formula on the photosynthesis characteristic and nitrogen metabolism of maize. The results showed that PGRs significantly increased the chlorophyll contents and the net photosynthetic rate of functional leaves, the transportation of nitrogen from leaves and stems to grains, the activities of nitrate reductase, glutamine synthetase and glutamine transferase in functional leaves of maize and glutamine synthetase and glutamine transferase in grains of maize in grain filling stage, and the activities of protease in maize functional leaves in the middle and anaphase of filling stage. The grain yields, the protein contents in the grain, and the grain protein yields were significantly increased when maize plant was treated with PGRs. PGR4 and PGR3 had the best feedback effects. The protein N in maize grain, maize grain yields and grain protein yields of treatment PGR4 were increased respectively by 1.35 g/kg, 9.5%, 19.6% compared with CK. The protein N in grain, grain yields and grain protein yields of PGR3 increased by 0.78 g/kg, 11.4%, 17.4% compared with CK respectively. |
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| Keywords: | maize plant growth regulator photosynthesis characteristic nitrogen metabolism key enzyme |
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