| 不同发育阶段板栗种子的脱水敏感性 |
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| 引用本文： | 宗梅,蔡永萍.不同发育阶段板栗种子的脱水敏感性[J].东北林业大学学报,2010,38(8). |
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| 作者姓名： | 宗梅 蔡永萍 |
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| 作者单位： | 安庆师范学院,安庆,246011;安徽农业大学 |
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| 基金项目： | 安徽省教育厅自然科学研究项目，安庆师范学院引进人才项目 |
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| 摘 要： | 通过对不同发育阶段的板栗种子进行自然脱水,研究了板栗种子脱水敏感性的动态变化。在自然脱水过程中,花后80d板栗种子在脱水第9天时,胚轴和子叶中的含水量分别下降至26.9%、25.5%,却仍然保持着最高的生活力,表明此时其脱水敏感性最低;花后90d板栗种子中淀粉大量降解,可溶性糖迅速增加,胚轴中可溶性蛋白也大量降解,推断其已转入萌发状态,故脱水敏感性略上升。由此得出,顽拗性板栗种子的最佳采收期应是生理成熟脱落前。同时也发现,脱水敏感性与细胞膜的透性并不完全相关。
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| 关 键 词： | 板栗 脱水敏感性 顽拗性种子 |
Desiccation Sensitivity of Castanea mollissima Seeds at Different Developmental Stages |
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| Zong Mei,Cai Yongping.Desiccation Sensitivity of Castanea mollissima Seeds at Different Developmental Stages[J].Journal of Northeast Forestry University,2010,38(8). |
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| Authors: | Zong Mei Cai Yongping |
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| Institution: | Zong Mei(College of Life Sciences,Anqing Teachers College,Anqing 246011,P.R.China),Cai Yongping(Anhui Agricultural University) |
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| Abstract: | An experiment was conducted to study the dynamic changes of desiccation sensitivity of chestnut (Castanea mollissima) seeds at different developmental stages through natural dehydration.During the natural dehydration,the moisture contents of embryonic axes and cotyledons of 80 days after anthesis dropped to 26.9%,25.5% respectively on the ninth day of dehydration,but their viabilities still maintained the maximum,which indicated that the desiccation sensitivity of embryonic axes and cotyledons was the minim... |
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| Keywords: | Castanea mollissima Desiccation sensitivity Recalcitrant seeds |
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