摘要
为满足粤北地区对不同杉木(Cunninghamia lanceolata)优良品系的需求,选育适应干旱条件的杉木家系,试验选择了当前在生产上应用较广的28个杉木家系,进行PEG6000模拟水分胁迫处理。结果显示,不同家系、不同处理间的含水率和SOD酶活性差异达极显著水平,其中家系604、742、763、779等在干旱胁迫条件下,有较高的SOD、POD和CAT酶活性。相关性分析表明,含水率和SOD、POD、CAT 3个酶活性没有明显的相关性特征。采用隶属函数值法进行抗旱性综合评价,家系779、604、742、770和763位列前五,为抗旱性较好的一批家系。
Twenty-eight Cunninghamia lanceolata families were subjected to PEG-6000 simulated drought stress treatment assay for the selection of drought-tolerance germplasm that were suitable for use in northern Guangdong. The results showed that there have signifcant differences （P〈0.01） of the relative water content and SOD activity among families. Family 604, 742, 763 and 779 had relative high SOD, POD and CAT activity under drought condition. No signifcant correlations （P〉0.05） were observed among relative water content and SOD, POD, CAT activities. According to the subordinate function values, a sequenced drought-tolerant family including 604, 742, 763,770, 779 was identifed.
作者
刘伟新
郑会全
胡德活
王润辉
韦如萍
晏姝
梁瑞友
LIU Weixin;ZHENG Huiquan;HU Dehuo;WANG Runhui;WEI Ruping;YAN Shu;LIANG Ruiyou(Xiaokeng Forest Farm, Shaoguan, Guangdong 512600, China;Guangdong Provincial Key Laboratory of Silviculture, Protection and Utilization/Guangdong Academy of Forestry, Guangzhou, Guangdong 510520, China)
出处
《林业与环境科学》
2018年第2期19-24,共6页
Forestry and Environmental Science
基金
广东省科技厅公益研究与能力建设项目"红心材杉木良种选育研究"(2016B020201002)
广东林业科技创新项目"杉木第三代种子园营建技术研究"(2017KJCX026)共同资助
关键词
杉木
相对含水率
SOD
POD
CAT
Cunninghamia lanceolata
relative water content
SOD
POD
CAT
作者简介
刘伟新（1963-）,男,工程师,主要从事森林培育及林业资源管理工作,E-mail：qjxklwx@126.com.;通信作者：王润辉（1974-）,男,高级工程师（教授级）,主要从事林木遗传育种研究,E-mail：wrunh@163.com.
