湖北省引种原生种源和次生种源日本落叶松生长比较研究  

Comparison Study on Growth to Primary and Secondary Provenance of Larix Kaempferi Introduced in Hubei Province

作　　者：管兰华[1] 曹健[1] 汪建亚[1] 徐红梅[2] 祁万宜 河村嘉一郎[1] 

机构地区：[1]湖北省林木育种科学技术中心,武汉430079 [2]湖北省林业科学研究院,武汉430079 [3]湖北省宜昌市林业科学研究所,宜昌443000

出　　处：《湖北林业科技》2005年第6期5-7,共3页Hubei Forestry Science and Technology

基　　金：中日合作林木育种科学技术中心研究项目;落叶松良种选育和高效栽培(2002BA515B0401)。

摘　　要：以湖北省从国内引种的日本落叶松次生种源和从日本引种的原生种源材料为对象,利用7a生生长数据对这两部分材料在湖北省的生长情况进行了比较研究。结果表明:原生种源的胸径、树高生长分别是次生种源的1.8、1.6倍,次生种源和原生种源内各种源间胸径和树高的生长差异均达到显著或极显著水平;原生种源比次生种源具有更高的遗传变异性,通过选择获得的遗传增益分别是次生种源的4.75和2.38倍。Comparison study on growth for material as object with primary and secondary provenances of Larix Kaempferi introduced both form national and Japan respectively were done with 7 years-old growth data of DBH and height in Hubei Province. The result showed that the growth of DBH and height in primary provenance were 1,8 and 1.6 times of secondary provenance. Compared with secondary provenance, primary provenance had higher genetic variation although there exist significant or very significant difference among the families both from primary and secondary provenances. The genetic gains of DBH and height through selection were 4.75 and 2.38 times of secondary provenance respectively.

关 键 词：日本落叶松 次生种源 原生种源 遗传变异 

分 类 号：S791.223[农业科学—林木遗传育种] S792.27[农业科学—林学]