海水胁迫对中华补血草种子萌发和幼苗生长的影响  

Effects of Seawater Stress on Seed Germination and Seedling Growth of Limonium sinense

作　　者：刘惠芬[1] 李云芝[1] 刘文光[1] 衣葵花[1] 王向誉[1] 顾寅钰[1] 郭洪恩[1] 

机构地区：[1]山东省蚕业研究所,山东烟台264002

出　　处：《山东农业科学》2017年第12期33-36,共4页Shandong Agricultural Sciences

基　　金：山东省农业科学院农业科技创新工程项目(CXGC2016B10);山东省农业重大应用技术创新项目(201706)

摘　　要：本试验分别以采自山东省东营市和滨州市的中华补血草种子为研究对象,通过对种子发芽势、发芽率、发芽指数、活力指数和幼苗苗高及根长的统计与测量,研究了海水胁迫对种子萌发和幼苗生长的影响。结果表明:在体积分数3%、25%、50%、67%的海水处理下,两个地区的中华补血草种子发芽势、发芽率、发芽指数以及活力指数均受到不同程度的抑制,幼苗苗高和根长也受到抑制。而6%体积分数海水处理能够促进幼苗生长并且提高种子活力,12%体积分数海水处理则对幼苗根的生长有轻微抑制。在67%体积分数海水处理下,两地区中华补血草种子的萌发几乎完全被抑制。综合来看,滨州采集的中华补血草种子较东营的受海水胁迫影响小,表现出较强的耐盐能力。Using the Limonium sinense seeds from Dongying and Binzhou of Shandong Province as materials,the effects of seawater stress on its seed germination and seedling growth were reserched by using the germination potential,germination percentage,germination index and vigor index of seeds and the height and root length of seedlings. The results showed that the germination potential,germination percentage,germination index and vigor index of seeds from the two regions were all inhibited under seawater stress at the concentrations of 3%,25%,50% and 67%( volume fraction),so were the seedling height and root length. But under the stress of 6% seawater,the seed vigor index increased,and the seedling growth was promoted. The root length was slightly inhibited under the stress of 12% seawater. Almost all the seed germination of Limonium sinense from two regions was inhibited under the stress of 67% seawater. Through comparison,the Limonium sinense from Binzhou was less influenced by seawater stress,and showed stronger salt resistant ability.

关 键 词：中华补血草 海水胁迫 种子萌发 幼苗生长 

分 类 号：S567.23[农业科学—中草药栽培]