木麻黄无性系水培苗抗盐性研究  

Study on Salt-tolerance Ability in Rooted Cuttings of Different Casuarina Clones

作　　者：张勇[1,2] 仲崇禄 姜清彬[1,2] 陈羽[1,2] 陈珍[1,2] 

机构地区：[1]中国林业科学研究院热带林业研究所,广东广州510520 [2]海南省文昌林业研究所,海南文昌571321

出　　处：《林业科学研究》2008年第1期91-95,共5页Forest Research

基　　金：十一五科技支撑项目专题"优质抗逆生态树种木麻黄新品种选育(2006BAD01A16)";中国林业科学研究热带林业研究所基本科研业务专项资金(2007-24);广东省科技计划项目"木麻黄种质资源与选育(2004B20801008)"

摘　　要：利用木麻黄小枝能水培生根的特性,用不同浓度的盐溶液对9个无性系木麻黄的生根水培苗进行盐胁迫处理,测定木麻黄水培苗在盐胁迫下的一些生理生化指标的变化,比较不同木麻黄无性系的抗盐能力。结果表明:极显著影响木麻黄水培苗生根的临界盐浓度为5~10 g.kg-1;主成分分析法确定的评价木麻黄水培苗抗盐的主要性状指标是游离脯氨酸含量、相对电导率(细胞膜透性)和POD活性;综合评价法筛选出3个抗盐性强的无性系是粤501、湛江01、闽7012。Based on the characteristic that branchlets of Casuarina is capable of forming roots by water culture,rooted cuttings of 9 Casuarina clones were immersed by various concentration of salt solutions for stress treatments,then 6 physiological or biochemical variables related to salt stress were measured,and salt-tolerance ability among different Casuarina clones were compared.The results showed that: The critical salt concentration that prevent rooted cuttings from rooting very significantly was 5—10 g·kg-1.3 ...

关 键 词：木麻黄无性系 抗盐性 主成分分析 综合评价 

分 类 号：S792.93[农业科学—林木遗传育种]