| Cite this article: | 庞力豪,姜凯阳,赵金玺,等.外源5-氨基乙酰丙酸对涝渍胁迫下小麦幼苗生长的影响[J].灌溉排水学报,0,():-. |
| PANG Li-hao,JIANG Kai-yang,ZHAO Jin-xi,et al.外源5-氨基乙酰丙酸对涝渍胁迫下小麦幼苗生长的影响[J].灌溉排水学报,0,():-. |
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| Effect of Exogenous 5-ALA on Growth of Wheat Seedling under Waterlogging Stress |
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PANG Li-hao, JIANG Kai-yang, ZHAO Jin-xi, ZHANG Yu-fei, ZHANG Mei
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Yantai Research Institute,China Agricultural University
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| Abstract: |
| 【Objective】Investigate the effect of 5-aminolevulinic acid (5-ALA) soaking on the growth of wheat seedling under waterlogging stress. 【Method】‘Hong Di 95’was used as experimental material and 5-ALA with different concentration gradients was used to soak wheat seeds. The "soaking pond" method was used to simulate waterlogging stress, and the effects of exogenous 5-ALA on the growth morphology of wheat seedlings under waterlogging stress were evaluated by measuring the length and fresh weight of seedlings and roots. The contents of chlorophyll (Chl), soluble sugar (SS) and malondialdehyde (MDA) on wheat seedlings under waterlogging stress were measured. 【Result】The result shows that with the increasing of exogenous 5-ALA concentration, the growth vigor of wheat seedling first increases and then decreases. Seed soaking with 5-ALA at suitable concentration accelerates seedling growth, increases chlorophyll and soluble sugar, decreases MDA in wheat tissues and improves waterlogging resistance of wheat. But 5-ALA in high concentration inhibits wheat growth.【Conclusion】The optimum concentration is 50 mg.L<sub><sup>-1</sup></sub>. The growth of wheat seedling is inhibited by the concentration of 5-ALA at 80 mg.L<sub><sup>-1</sup></sub> and 100 mg.L<sub><sup>-1</sup></sub>. |
| Key words: 5-aminolevulinic acid; waterlogging stress; wheat; waterlogging resistance |
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