板栗种子发育期间ABA等生理指标与脱水耐性的相关性研究

宗梅1; 2; $21; $22

引用本文:	宗梅1，2，蔡永萍1，范志强2.板栗种子发育期间ABA等生理指标与脱水耐性的相关性研究[J].广西植物,2011,(6):818-822.[点击复制]
	ZONG Mei1，2， CAI Yong Ping1， FAN Zhi Qiang2.Study on the correlation between physiological indexes as ABA， etc and desiccation tolerance in developing chestnut seeds[J].Guihaia,2011,(6):818-822.[点击复制]

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板栗种子发育期间ABA等生理指标与脱水耐性的相关性研究
宗梅1，2，蔡永萍1，范志强2
1.安徽农业大学生命科学学院，合肥 230036;2.安庆师范学院生命科学学院，安庆 246011

摘要:

对板栗种子发育期间胚轴和子叶中部分生理指标的变化以及它们与板栗种子脱水耐性的相关性进行研究。结果表明：随着板栗种子不断发育，在花后80 d胚轴和子叶中ABA、淀粉、可溶性蛋白质量分数同步达到最大值，可溶性糖质量分数达到最低，此时板栗种子的脱水耐性最强，可确定为板栗的最佳采收期。另外，通过相关分析可知，板栗种子在发育期间脱水耐性的获得主要与胚轴中物质的变化有关，且与淀粉质量分数呈极显著正相关，与ABA、可溶性蛋白质量分数呈高度正相关，与可溶性糖质量分数呈中度负相关。由此得出，根据淀粉质量分数的变化可以初步推测出板栗种子最大脱水耐性时期。

关键词: 板栗脱水耐性顽拗性种子 ABA 淀粉

DOI：

分类号:Q945

基金项目:

Study on the correlation between physiological indexes as ABA， etc and desiccation tolerance in developing chestnut seeds

ZONG Mei1，2， CAI YongPing1， FAN ZhiQiang2

1.School of Life Sciences， Anhui Agricultural University， Hefei 230036， China;2.College of Life Sciences， Anqing Teachers College， Anqing 246011， China 1.School of Life Sciences， Anhui Agricultural University， Hefei 230036， China； 2.College of Life Sciences， Anqing Teachers College， Anqing 246011， China

Abstract:

The partial physiological indexes of embryonic axes and cotyledons in the developing chestnut seeds，and the correlation between them and the desiccation tolerance were studied. Experimental results showed that with the development of chestnut seeds，the contents of ABA，starch and soluble proteins of embryonic axes and cotyledons on the 80 days after anthesis reached synchronously the maximum，the content of soluble sugars of embryonic axes and cotyledons on the 80 days after anthesis was the minimum. At the moment the desiccation tolerance of chestnut seeds on the 80 days after anthesis was the strongest，so it should be the optimal harvest period for chestnut. In addition，by correlation analysis，the acquisition of desiccation tolerance in the developing chestnut seed was related to the changes of matter in embryonic axes. It was significantly correlative with starch and the contents of ABA and soluble proteins，and was negatively correlative with the contents of soluble sugars. Therefore，the period of maximum desiccation tolerance in chestnut seeds could be inferred by the change of starch.

Key words: castanea mollisima desiccation tolerance recalcitrant seeds ABA starch