摘要
以高温诱导得到的水曲柳次生休眠种子为材料,探讨种子次生休眠解除过程中物质转化和内源激素的变化规律。结果表明:次生休眠解除过程中,种子的脂肪酶活性和脂肪酸质量分数快速增加;β-淀粉酶活性显著提高,可溶性糖和可溶性蛋白的利用加快;种子内源ABA质量分数持续下降,GA3/ABA、IAA/ABA和ZT/ABA均显著升高,种子贮藏物质的转化与内源激素的变化关系密切,内源激素在种子次生休眠解除过程中发挥着重要的调节作用。
A study was conducted to discuss substance transformation and endogenous hormone changes in Fraxinus mandshurica seeds in secondary dormancy induced by high temperature during the process of release from secondary seed dormancy.Results showed that lipase activity and fatty acid content in the F.mandshurica seeds increased rapidly,β-amylase activity improved evidently,and soluble protein and soluble sugar dissolved faster during the process.The ABA content decreased constantly,and the ratios of GA3 to ABA,IAA to ABA,ZT to ABA were all raised markedly.The correlation between substance transformation and endogenous hormone was obvious.The endogenous hormones in F.mandshurica seeds play a very important role in the process of release from secondary dormancy in seeds.
出处
《东北林业大学学报》
CAS
CSCD
北大核心
2011年第5期17-19,共3页
Journal of Northeast Forestry University
基金
国家自然科学基金项目(31000301)
中央高校基本科研业务费专项资金项目(DL10CA02)
关键词
水曲柳
种子
次生休眠
物质转化
内源激素
Fraxinus mandshurica
Seeds
Secondary dormancy
Substance transformation
Endogenous hormones
