中国果菜2024，Vol.44Issue(11)：53-57,62,6.DOI:10.19590/j.cnki.1008-1038.2024.11.010
PEG 6000模拟干旱胁迫环境对大葱种子和幼苗生理特性的影响
Effects of PEG 6000 Simulated Drought Stress Environment on Physiological Characteristics of Seeds and Seedlings of Chinese Onion
摘要
Abstract
To investigate the differences degrees of drought in seed germination and seedling growth of three varieties of Chinese onion,and to explore the effects of osmotic stress on the drought tolerance of scallion seed germination and seedling growth,Zhangqiu scallion,Longyin scallion,and Taoyin scallion were used as materials.The method of seed culture dish germination and seedling pot cultivation was adopted.Four different concentrations(0,5%,10%,15%)of polyethylene glycol(PEG 6000)were set to simulate water drought,and the scallion seeds and seedlings were treated to measure their germination rate,germination potential,root length,hypocotyl length,seedling growth,photosynthetic pigment content,and root vitality content.The results showed that with the increase of PEG 6000 concentration,the germination rate,germination potential,root length and hypocotyl length of Chinese onion seeds showed a gradually decreasing trend.The root activity of control treatment was significantly higher than that of other treatments.Compared with 10%PEG 6000 concentration,at 15%PEG 6000 concentration the root activity of Taoyin and Zhangqiu scallion was not significantly reduced,while that of Longyin scallion was significantly decreased.It could be seen that the maximum tolerance concentration of Taoyin and Zhangqiu scallion seedlings was 15%,and that of Longyin scallion seedlings was 10%,which provided a theoretical basis for the development and introduction of scallion resources.关键词
大葱/干旱胁迫/聚乙二醇/种子萌发/生理特性Key words
Chinese onion/drought stress/polyethylene glycol/seed germination/physiological characteristics分类
农业科技引用本文复制引用
郭子军,谢淑琴,魏镛频,吕海龙,曹力强,张旦,王姣敏..PEG 6000模拟干旱胁迫环境对大葱种子和幼苗生理特性的影响[J].中国果菜,2024,44(11):53-57,62,6.基金项目
甘肃省科技计划重点研发项目-甘肃中部农光互补高效生产技术模式研发与示范(23YFNJ0004) （23YFNJ0004）
定西市科技局重点技术攻关项目-智能温室工厂化育苗技术研究(DX2022AZ13) （DX2022AZ13）
定西市科技局重点技术攻关项目-大葱种质资源创新及利用(DX2024AZ08) （DX2024AZ08）
