夏枯草种子萌发及其幼苗生长对干旱胁迫的响应
Seed Germination and Seedling Growth of Prunella vulgaris L.in Response to Drought Stress
王媛媛 1彭亮 1王晶 1杨冰月 1杜疏炀 1胡本祥1
作者信息
- 1. 陕西中医药大学药学院,陕西咸阳 712046
- 折叠
摘要
[目的]探讨干旱胁迫对夏枯草种子及其幼苗生长的影响.[方法]采用不同浓度的聚乙二醇(PEG-6000)对夏枯草种子进行处理,测定种子发芽率、发芽指数、发芽势以及幼苗的主根长、株高、鲜重、干重等指标.[结果]随干旱强度的增加,不同浓度的PEG干旱胁迫对夏枯草种子萌发及幼苗生长产生不同程度的影响.[结论]低浓度(2.5%~5.0%)PEG胁迫作用小,高浓度(10.0%~15.0%)PEG胁迫作用大;10.0%浓度PEG促使地下根长生长;对于地上部分,低浓度抑制不明显,高浓度各指标均产生显著抑制.
Abstract
[Objective] To discuss the effects of drought stress on germination of Prunella vulgaris L.seeds and seedling growth.[Method] By using different concentrations of polyethylene glycol(PEG-6000), seed germination rate (Gr), germination index (GI) , germination potential (Gp)and seedling root length, plant height, fresh weight and dry weight indicators were determined.[Result] The results indicated that different PEG concentrations had different effects on the germination of P.vulgaris seeds and seedlings growth with the increase of drought intensity.[Conclusion] Low concentrations(2.5%-5.0%) of PEG have the little effects on P.vulgaris seeds, while high concentrations(10.0%-15.0%) have a large effects, 10.0% concentration promotes the growth of underground part, for the overground part, low concentration suppression is not obvious, high concentrations of various indexes significantly inhibit.
关键词
夏枯草/聚乙二醇/干旱胁迫/种子萌发/幼苗生长Key words
Prunella vulgaris L./PEG-6000/Drought stress/Seed germination/Seedling growth引用本文复制引用
基金项目
公益性行业(中医药)科研专项经费项目(201507002)
陕西省教育厅重点项目(11JS038)
出版年
2017
国家科技期刊平台
NSTL
维普
万方数据