中国麻业科学2026，Vol.48Issue(2)：70-76,7.
氯胁迫对罗布麻种子萌发影响与毒害阈值研究
Study on the Effects of Chlorine Stress on the Germination of Apocynum venetum Seeds and the Threshold of Toxicity
摘要
Abstract
Taking Apocynum venetum as the research object,two chlorine sources,CaCl2(with Cl-concentrations of 0,20,40,60,80,100,120,140,160,180,and 200 mmol/L)and NaCl(with Cl-concentrations of 0,50,100,150,200,250,300,350,and 400 mmol/L),were set up to study their effects on the germination indices(germination rate,germination potential,germination index,and aver-age germination time)and seedling growth(stem length,root length,and fresh weight)of Apocynum venetum seeds.The results showed that under CaCl2 treatment,as the Cl-concentration increased,the germination rate,germination potential,and germination index decreased,but significantly increased at 100 mmol/L,even exceeding the control level.After exceeding 160 mmol/L,they decreased again until approaching zero.The average germination time first shortened and then lengthened,and the seedling length,root length,and fresh weight gradually decreased.Under NaCl treatment,all the indices de-creased monotonically with the increase in concentration.Through regression analysis of the Boltzmann Model,the Cl-toxicity threshold(IC50)of CaCl2 and NaCl treatments was determined to be 176.80 mmol/L and 293.48 mmol/L,respectively.This experiment provides a reference for determining the chloride ion toxicity threshold when growing Apocynum venetum in Xinjiang.关键词
氯胁迫/罗布麻/萌发/毒害阈值Key words
chloride ion stresses/Apocynum venetum/germination/toxicity thresholds分类
农业科技引用本文复制引用
王祖超,游今扬,杨迎,关鑫,刘立军..氯胁迫对罗布麻种子萌发影响与毒害阈值研究[J].中国麻业科学,2026,48(2):70-76,7.基金项目
财政部和农业农村部:国家麻类产业技术体系(CARS-16-E12) （CARS-16-E12）
