盐胁迫对木麻黄种子萌发的影响  

Effect of NaCl Stress on Casuarina Seed Germination

作　　者：武冲[1,2] 张勇[2] 唐树梅[1] 仲崇禄[2] 

机构地区：[1]海南大学农学院,海南儋州571737 [2]中国林科院热带林业研究所,广东广州510520

出　　处：《种子》2010年第4期30-33,共4页Seed

基　　金：中国林科院热带林业研究所基本科研业务专项资金"木麻黄杂交育种技术的研究"(2007-24)资助;"十一五"林业科技支撑计划"优质抗逆生态树种木麻黄新品种选育"(2006BAD01A1605)研究内容;福建省林木种苗科技攻关项目第三期"木麻黄杂交育种和种子园营建技术研究"研究内容

摘　　要：研究了在0.1%、0.3%、0.5%、0.7%和1%NaCl胁迫条件下,山地木麻黄(Casuarina junghuhniana Miq.)、细枝木麻黄(C.cunninghamiana Miq.)和粗枝木麻黄(Casuarina glauca)种子萌发和幼苗生长状况。结果表明,随着NaCl浓度的增加,3个树种的种子萌发率、活力指数、发芽势以及幼苗的苗高和根长均呈下降趋势,不同种之间的木麻黄种子的发芽率差异显著。Casuarina junghuhniana Miq.,C·cunninghamiana Miq.,and Casuarina glauca Seed germination and the growth of seedlings under the condition of 0.1%,0.3%,0.5%,0.7% and 1% NaCl.Stress were studied.The result showed that seed germination rate,vigor index,germination trends,seedling height and seedlings root length of these three species would decline with the concentration increasing of NaCl.It showed that different Casuarina species seeds had significant differences in germination rate.

关 键 词：木麻黄 种子萌发 NACL胁迫 发芽率 活力指数 

分 类 号：S722.1[农业科学—林木遗传育种]