安徽农业科学2017，Vol.45Issue(24)：23-25,3.
干旱胁迫对多根葱种子萌发和幼苗生长的影响
Effect of Drought Stress on Seed Germination and Seedling Growth of Allium polyrhizum
摘要
Abstract
[Objective]To study effect of drought stress on seed germination and seedling growth of Allium polyrhizum.[Method]Drought is one of the main factors for limiting the seed germination of grassland plants.Taking the Allium polyrhizum seeds from the Stipa Krylovii steppe as research object, the germination percentage,vigor index,radicle,embryo of A.polyrhizum seeds were tested on filter paper under different concentrations of PEG6000 to simulate the drought stress.[Result]PEG had significant effects on the seed germination and seedling growth, the indexes reduced gradually with the increase of PEG concentration, such as germination speed,germination rate, germination index, vigor index, the length of radicle and embryo, dry weight of radicle, but the dry weight of embryo was not significant.A.polyrhizum germinated and grew normally under the drought condition of 0-5%PEG, the germination and seedling growth of A.polyrhizum was significantly inhibited when the PEG concentrations was greater than 10%.[Conclusion]The research can offer guidance for A.polyrhizum seedling germination under drought stress.关键词
多根葱/干旱胁迫/发芽率/发芽特性Key words
Allium polyrhizum/Drought stress/Germination rate/Germination characteristics分类
农业科技引用本文复制引用
原畅,王双蕾,陈嘉言,张鑫倪,宋彦涛..干旱胁迫对多根葱种子萌发和幼苗生长的影响[J].安徽农业科学,2017,45(24):23-25,3.基金项目
2016年度大连民族大学"大创计划"创新训练项目(G201612026043/XA201612316) （G201612026043/XA201612316）
国家自然科学基金项目(31500366,31470504) （31500366,31470504）
中央高校基本科研业务费青年项目(DC201501070402) （DC201501070402）
人力资源和社会保障部留学人员科技活动择优资助项目(2015年). （2015年）
