三种相思树种的耐寒性评估  

Evaluation of Cold Tolerance of Three Acacia Species

作　　者：张卫华[1,2] 张方秋[1] 徐大平[2] 张守攻[3] 陈祖旭[2] 胡彩颜[2] 

机构地区：[1]广东省林业科学研究院,广东广州510520 [2]中国林业科学研究院热带林业研究所,广东广州510520 [3]中国林业科学研究院林业研究所,北京100091

出　　处：《林业科学研究》2008年第6期842-846,共5页Forest Research

基　　金：“948”引进国际创新项目“相思定向育种与新品系示范(2001-C2)”

摘　　要：采用电导法对南亚热带的马占相思、大叶相思、厚荚相思的幼苗在树种和种源2个层次上的耐寒性进行了评估，并进行了排序。结果表明：在树种和种源层次上，3种相思耐寒性变异均达极显著差异；马占相思的低温敏感区为6℃，大叶相思和厚荚相思的低温敏感区为0～3℃；最耐寒的马占相思种源是17703，大叶相思种源是19244，厚荚相思种源是17562和16598。This paper evaluated the ability of cold resistance of three Acacia species coming from south subtropical areas and sequenced the cold resistance of the provenances on the basis of electrical conductivity. The results showed that there was very significant diference for cold tolerance among the three Acacia species and their provenances. The sensitizing range of low temperature for A. mangium, was 6 ℃, and 3 -0 ℃ for A. auriculaeformis and A. crassicarpa. The strongest provenances of A. mangium, A. auriculaeformis and A. crassicarpa were 17703, 19244, 17562 or 16598.

关 键 词：马占相思 大叶相思 厚荚相思 电导法 耐寒性 

分 类 号：S792.99[农业科学—林木遗传育种] S722.3[农业科学—林学]