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作 者 ：廖祥儒 朱新产

期 刊 ：植物学通报 1997年 14卷 02期 页码：36-40

关键词：PAL；POD；CAT；PEG处理；小麦；

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。

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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