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李金霞, 戴文圣. 榧树种子层积过程中主要贮藏物质含量及酶活性的变化[J]. 浙江林业科技, 2015, 35(5): 37-40.
引用本文: 李金霞, 戴文圣. 榧树种子层积过程中主要贮藏物质含量及酶活性的变化[J]. 浙江林业科技, 2015, 35(5): 37-40.
LI Jin-xia, DAI Wen-sheng. Storage Substance Content and Their Enzyme Activity During Stratification of Torreya grandis Seed[J]. Journal of Zhejiang Forestry Science and Technology, 2015, 35(5): 37-40.
Citation: LI Jin-xia, DAI Wen-sheng. Storage Substance Content and Their Enzyme Activity During Stratification of Torreya grandis Seed[J]. Journal of Zhejiang Forestry Science and Technology, 2015, 35(5): 37-40.

榧树种子层积过程中主要贮藏物质含量及酶活性的变化

Storage Substance Content and Their Enzyme Activity During Stratification of Torreya grandis Seed

  • 摘要: 对2013年10月采自浙江省嵊州市榧树(Torreya grandis)种子当年进行层积催芽,通过测定种子胚乳淀粉、可溶性糖、蛋白质和脂肪含量以及与贮藏物质相关酶类中的淀粉酶、蛋白酶和酸性磷酸酯酶的活性变化,研究其主要贮藏物质和相关酶类的变化规律。结果表明:榧树种子层积150 d后,淀粉含量减少40.30%,蛋白质含量减少57.78%,粗脂肪含量减少22.45%;可溶性糖含量呈先降低后升高;淀粉酶、蛋白酶、酸性磷酸酶活性在层积处理0 ~ 120 d时逐渐升高,120 ~ 150d时略有降低。这说明榧树种子在层积处理过程中,主要贮藏物质在相关酶类的催化下逐渐分解,为种胚的发育和种子萌发提供能量和物质基础。

     

    Abstract: Seeds of Torreya grandis were collected in the Oct., 2013 in Shengzhou, Zhejiang province, and were stratified on the same month. Determinations were made on content of starch, soluble sugar, protein, fat, activities of amylase, protease, acid phosphatase. The results demonstrated that 150 days later, the content of starch, protein and crude fat of treated seeds decreased by 40.30%, 57.78% and 22.45% respectively, while the content of soluble sugar decreased first and then increased. The activity of amylase, protease and acid phosphatase increased from 0 to 120th days, and slightly decreased from 120th to 150th days of the stratification. The experiment indicated that the storage substances decomposed under the catalysis of relative enzymes for providing energy of embryo development and seed germination

     

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