151. 初花期低温及预喷施烯效唑对绿豆叶片AsA-GSH循环和产量的影响.
- Author
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项洪涛, 李 琬, 何 宁, 王雪扬, 曾玲玲, 刘 佳, and 冯延江
- Subjects
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OSMOREGULATION , *MEMBRANE permeability (Biology) , *VITAMIN C , *CELL permeability , *LOW temperatures , *MUNG bean - Abstract
[Objective] The present paper aimed to explore the effects of chilling injury and pre-spraying of uniconazole ($3307) on the phys- iological metabolism of mung bean (Vigna radiata) leaves and yield, studying the effects of low temperature stress at the initial flowering stage on physiological and yield of mung bean, and the alleviating effect of pre-spraying $3307 on stress. [Method] The pot experiment in the research was conducted, and the crop cultivar included Lvfeng 5 (L5) and Lvfeng 2 (L2). S3307 was pre-sprayed and treated with con- tinuous low temperature (average 15 °C) for 5 days and samples were taken every day to analyze the cell membrane permeability, AsA-GSH cycle, content of osmotic adjustment substances in mung bean leaves and yield, and the mitigating effects of $3307. [Result] The content of malondialdehyde (MDA) and the electrolyte leakage in mung bean leaves were significantly increased by chilling damage at the initial flow- ering stage, and the content of ascorbic acid and glutathione, and the content of soluble sugar and soluble protein were significantly in- creased. The 100-seeds weight of L5 was significantly decreased by 2. 17% -16.60%, and the yield per plant was significantly decreased by 10. 37% -44.62%. At the same time, the 100-seeds weight of L2 was significantly decreased by 3. 33% -22. 14%, and the yield per plant was significantly decreased by 12.73% -45.69%. S3307 had the effect of resisting chilling damage at the initial flowering stage. Un- der low temperature conditions, pre-spraying $3307 effectively increased the soluble sugar and soluble content of mung bean leaves, significantly reduced the MDA content and the electrolyte leakage, and significantly increased the content of ascorbic acid and glutathione. Spra- ying $3307 had the regulatory effect of increasing the yield of mung bean. Under normal temperature conditions, L5 and 12 in a single plant significantly increased by 4. 70% and 7. 87%, respectively. Under the conditions of chilling, the 100-seeds weight was significantly in- creased by 1. 23% -3.32%, and the yield per plant was significantly increased by 3. 49% -8. 13% when 15 was treated for 1-5 days.. And 100-seeds weight was significantly increased by 1.72% -5.21%, and the yield per plant was significantly increased by 10.94% - 16.55% when 12 was treated for 1-5 days. [Conclusion] Low temperature at the initial flowering stage affected the physiological functions of mung bean leaves such as cell membrane permeability, AsA-GSH cycle, and osmotic regulation substances; Pre-spraying $3307 could ef- fectively alleviate the effects of chilling injury on mung bean physiology and yield. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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