珙桐种子层积过程中抑制物活性的变化

钱存梦; 江周; 周健; 代松; 苏友谊; 李淑娴

doi:10.3969/j.issn.1000-2006.2016.03.031

珙桐种子层积过程中抑制物活性的变化

钱存梦,江周,周健,代松,苏友谊,李淑娴

南京林业大学学报（自然科学版） ›› 2016, Vol. 40 ›› Issue (03) : 188-192.

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南京林业大学学报（自然科学版） ›› 2016, Vol. 40 ›› Issue (03) : 188-192. DOI: 10.3969/j.issn.1000-2006.2016.03.031

研究简报

珙桐种子层积过程中抑制物活性的变化

钱存梦,江周,周健,代松,苏友谊,李淑娴^*

作者信息 +

Changes of inhibitory activity during stratification in Davidia involucrata seeds

QIAN Cunmeng, JIANG Zhou, ZHOU Jian, DAI Song, SU Youyi, LI Shuxian^*

Author information +

文章历史 +

摘要

为探明珙桐种子不同部位内源抑制物含量及其在层积过程中的变化情况,分别取层积12、16个月的珙桐种子,以甲醇和丙酮为提取剂,制备其种仁(胚和胚乳)、种壳的浸提液,分析各浸提液对白菜籽发芽的影响。结果表明:珙桐种仁和种壳中均含有发芽抑制物质; 随着浸提液质量浓度的升高,抑制物生理活性增强; 种仁浸提液抑制物的生理活性显著高于种壳浸提液; 种仁甲醇浸提液抑制物的生理活性显著高于丙酮浸提液,而两种提取剂中,种壳浸提液的生理活性差异不显著。低温层积12个月再变温层积4个月后,珙桐种子内源抑制物的生理活性显著降低,但此时种仁 0.09 g/mL的甲醇浸提液对白菜籽的发芽指数仍有显著的抑制作用,表明此时种仁中仍含有一定量的抑制物质。

Abstract

In order to know location of inhibitory substances in Davidia involucrata seeds and changes of inhibitory activity during stratification, activities of extracting solutions of D. involucrata seeds were studied after stratification for 12 and 16 months. Extracting solutions of endocarps, seed endosperms and embryos(kernel)in D. involucrata were prepared by using methanol and acetone as extracting solvents. The results indicated that germination inhibitors existed in both kernel and endocarp of D. involucrata and with the increase of concentration of extracting solutions, activities of inhibitors increased too. But the inhibitory activities of kernel extracting solution were significantly higher than that of endocarp extracting solution. Besides, methanol extracting solution of seed kernel was at a higher level of inhibitory activities than that of acetone extracting solution, while no significant difference was presented in endocarps by the two extracting solutions. The inhibitory activities in seeds were decreased markedly after cold stratification for 12 months and then variable temperature stratification for 4 months. However, at this moment, germination index of cabbage seeds treated with 0.09 g/mL methanol extracting solution of seed kernel was still significantly inhibited, which indicated that some inhibitors in D. involucrate seed kernel remained strong inhibitory activity after stratification for 16 months.

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钱存梦,江周,周健,代松,苏友谊,李淑娴. 珙桐种子层积过程中抑制物活性的变化[J]. 南京林业大学学报（自然科学版）. 2016, 40(03): 188-192 https://doi.org/10.3969/j.issn.1000-2006.2016.03.031

QIAN Cunmeng, JIANG Zhou, ZHOU Jian, DAI Song, SU Youyi, LI Shuxian. Changes of inhibitory activity during stratification in Davidia involucrata seeds[J]. Journal of Nanjing Forestry University (Natural Sciences Edition）. 2016, 40(03): 188-192 https://doi.org/10.3969/j.issn.1000-2006.2016.03.031

中图分类号： S722

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基金

收稿日期:2015-05-18 修回日期:2015-08-01
基金项目:国家自然科学基金项目(31270711); 江苏省青蓝工程创新团队项目(苏教师(2012)16号); 江苏高校优势学科建设工程资助项目(PAPD)
第一作者:钱存梦(1334729471@qq.com)。*通信作者:李淑娴(shuxianli@njfu.com.cn),教授,博士。
引文格式:钱存梦,江周,周健,等. 珙桐种子层积过程中抑制物活性的变化[J]. 南京林业大学学报(自然科学版),2016,40(3):188-192.