| 种子引发提高小麦抗渗透胁迫能力的效应 |
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| 引用本文： | 廖祥儒,朱新产.种子引发提高小麦抗渗透胁迫能力的效应[J].植物学报,1997,14(2):36-40. |
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| 作者姓名： | 廖祥儒 朱新产 |
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| 作者单位： | (西北农业大学园艺系 陕西杨陵 712100) |
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| 摘 要： | 种子经渗透势-0.8 MPa或-1.2 MPa PEG—6000处理后，抗旱性不同小麦(Triticum aesttvum L．)“晋麦33”和“84G6”种子萌发率均有提高，种子电解质外渗率明显降低，种子萌发适应渗透胁迫能力提高，种子可溶蛋白质含量、PAL和POD活性显著增加，“晋麦33”种子CAT活性增加，两品种幼苗PAL、POD和CAT活性也均有提高，但“84G6”种子CAT活性下降。
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| 关 键 词： | PAL POD CAT PEG处理 小麦 |
Effect of Seed Priming on Improving Resistance of Wheat to Osmotic Stress |
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| Liao Xiang-ru and Zhu Xin-chan.Effect of Seed Priming on Improving Resistance of Wheat to Osmotic Stress[J].Bulletin of Botany,1997,14(2):36-40. |
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| Authors: | Liao Xiang-ru and Zhu Xin-chan |
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| Institution: | (Basic Course Department, Northwestern Agricultural University, Yangling, Shanxi 712100) |
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| Abstract: | Some physiological and biochemical changes in wheat seed or seedling from seed priming (treated with -0. 8 MPa or -1.2 MPa PEG-6000) were studied. Reponses of wheat Jin 33 and 84G6 to osmotic stress were compared. The data showed that seed priming improved seed germination under osmotic stress, decreased seed electrode leakage, increased seed soluble protein content, enhanced activity of PAL and POD of Jin 33 and 84G6 seed,CAT of Jin 33 seed,and activity of PAL, POD,and CAT of both Jin 33 and 84G6 seedlings. Priming with -1.2 MPa PEG -6000 had a slightly stronger effect on seed,and Jin 33 gave a better response to PEG priming. Role of seed priming in improving plant osmotic resistance were discussed. |
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| Keywords: | , |
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