摘要
在厚朴种源试验和主产区采样研究的基础上,分析了厚朴种内主要经济性状的层次变异和遗传;依据主要经济性状的相关和厚朴遗传改良的目标,确定了鄂西小凸尖型厚朴为优良种源区,浙、闽中间型为次优种源区。以树高、胸径、皮厚、树皮类型以及粉末颜色、油性、易磨性为主要选择性状,进行种源、单株二水平联合选择,提出了遗传改良的系统程序和方法。为厚朴中药材人工基地建设实现优质、高产提供了策略。
Officinal magnolia, Magnolia officinalis , was analyzed for its genetically varied intraspecific economic characters, using the results of a provenance test and field inventory data collected in the main growing areas. According to the objectives of genetic improvement, Western Hubei province where the small protruding and tapering-leaved magnolia is found was identified as the priority seed source, while Zhejiang and Fujian provinces where the intermediate-type of magnolia is found was identified as the next-to-priority seed sources. A combined selection with seed source and individual trees was carried out, considering such characters as the tree height, diameter at breast high, bark thickness, bark roughness, color of bark powder, oiliness of the inner bark, and grinding easiness of the bark. Finally, a systematic procedure in the form of a flow chart for magnolia genetic improvement was generated.
出处
《经济林研究》
2000年第1期13-15,18,共4页
Non-wood Forest Research
基金
浙江省科委"九五"科研项目!(项目编号 :96 110 2 111)
关键词
厚朴
遗传改良
种源试验
单株选择
Magnolia officinalis
genetic improvement
provenance test
plus tree selection.
