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烯效唑干拌种对小麦根叶生理功能的影响
引用本文:杨文钰,樊高琼,任万军,王竹,于振文,余松烈.烯效唑干拌种对小麦根叶生理功能的影响[J].中国农业科学,2005,38(7):1339-1345.
作者姓名:杨文钰  樊高琼  任万军  王竹  于振文  余松烈
作者单位:1. 四川农业大学农学院,雅安,625014
2. 山东农业大学农学院,泰安,271018
基金项目:四川省学术技术带头人培养基金(3200109)
摘    要: 为探明烯效唑对小麦的增产机理,通过常规田间试验和土柱栽培试验,研究了不同品种、不同施氮条件下烯效唑干拌种对小麦根、叶生理功能的影响。结果表明,烯效唑提高了根系活力,使根系对32P的吸收强度增加了20.2%,并大量分配给分蘖,比对照提高了5.7倍。叶面积显著增加,光合能力增强,单株对CO2的同化力提高了25.9%,14C同化物分配给根系和分蘖节的比例提高。生育后期,根、叶中超氧化物歧化酶(SOD)的活性增强,丙二醛(MDA)的含量降低。烯效唑的使用浓度以20 mg·kg-1为最佳。

关 键 词:烯效唑  小麦    
收稿时间:2004-4-27

Physiological Effect of Uniconazole Waterless-Dressed Seeds on Root and Leaf of Wheat
YANG Wen-yu,FAN Gao-qiong,REN Wan-jun,WANG Zhu,YU Zhen-wen,YU Song-lie.Physiological Effect of Uniconazole Waterless-Dressed Seeds on Root and Leaf of Wheat[J].Scientia Agricultura Sinica,2005,38(7):1339-1345.
Authors:YANG Wen-yu  FAN Gao-qiong  REN Wan-jun  WANG Zhu  YU Zhen-wen  YU Song-lie
Institution:YANG Wen-yu1,FAN Gao-qiong1,REN Wan-jun1,WANG Zhu1,YU Zhen-wen2,YU Song-lie2
Abstract:For a better understanding of the yield-increasing mechanism of wheat with uniconazole, the physiological effects of uniconazole (S-3307) waterless-dressed seeds on root and leaf of wheat were studied with different varieties and nitrogen levels in traditional field experiments and soil column culture. The results showed that S-3307 increased root vigor, which resulted in the absorption of 32P increased by 20.2% and the proportions of 32P distributed to tiller increased by 570% over the control. S-3307 also significantly increased the area of top leaf, improved the photosynthetic capacity of leaf, promoted the assimilatory ability of leaf by 25.9% as compared with the control, and distributed more 14C assimilates to roots and tiller nodes. At the later stage, S-3307 increased SOD activity, reduced MDA content in root and leaf. It is concluded that the best concentration of S-3307 is 20 mg per kg seeds.
Keywords:Uniconazole  Wheat  Root  Leaf
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