北京林业大学学报2017，Vol.39Issue(3)：1-6,6.DOI:10.13332/j.1000--1522.20160377
杜仲良种选育研究现状及展望
Status and prospect of improved variety selection in Eucommia ulmoides
摘要
Abstract
Eucommia ulmoides is not only an unique Chinese traditional medicine, but also a potential temperate rubber resource tree species, which has great value in industrialization exploitation of pharmaceutical and rubber production. In this paper, status of collection and conservation of germplasm resources, evaluation of genetic variation in traits, selection breeding, cross breeding, polyploidy breeding and vegetative propagation of varieties in E. ulmoides were reviewed. Leaves with many advantages, such as large quantity, low cost, easy to collect, are the best raw material for pharmaceutical and rubber production when Eucommia spp. plantations were developed in some regions with poor site conditions and labor resource shortage. Because polyploidy breeding could result in an increasing content of secondary metabolites, triploid hybrid production by gametic chromosome doubling may be the most promising way to greatly improve the rubber content and medicinal components of leaves and leaf yield. In future polyploid breeding of E. ulmoides, we should focus on selecting crossing parents with higher combining ability in rubber content and medicinal composition content of leaves. Not only ploidy advantages resulting from gene dosage effects but also heterosis derived from allogametes fusing can be fully utilized. To increase the efficiency of clonal selection, developing a detection techniques with simple and low cost characteristics for secondary metabolites, such as E. ulmoides rubber, active ingredients, is necessary and required. A simple and rapid vegetative propagation technique characterized with low cost is also required to shorten the period of seedling cultivation and speed up high quality seedling production of improved varieties. With the successful development of triploid E. ulmoides, it is predictable that multiple trait improvement via one round polyploidy breeding will promote the development of green circular economy with the core of pharmaceutical and rubber production in China.关键词
杜仲/三倍体/次生代谢产物/亲本选配/检测技术/无性繁殖Key words
Eucommia ulmoides/triploid/secondary metabolites/parental selection/detection technique/vegetative propagation分类
农业科技引用本文复制引用
康向阳..杜仲良种选育研究现状及展望[J].北京林业大学学报,2017,39(3):1-6,6.基金项目
北京市自然科学基金重点项目(5141001)、北京市共建项目专项(2016BLREEE00). （5141001）
