文献类型：期刊文献

中文题名：厚朴苗期性状及种源选择初步研究

英文题名：Studies on Growth Characteristics of Magnolia officinalis Seedlings and Provenance Selection

作者：于华会[1] 杨志玲[1] 谭梓峰[1] 杨旭[1] 舒枭[2]

第一作者：于华会

机构：[1]中国林业科学研究院亚热带林业研究所;[2]云南农业大学

年份：2010

卷号：18

期号：2

起止页码：189-195

中文期刊名：热带亚热带植物学报

外文期刊名：Journal of Tropical and Subtropical Botany

收录：CSTPCD;;北大核心:【北大核心2008】；CSCD:【CSCD2011_2012】；

基金：国家科技部公益性林业专项(200704022)资助

语种：中文

中文关键词：厚朴;种源试验;遗传变异;非度量多维标度排序

外文关键词：Magnolia officinalis; Provenance test; Genetic variation; Non-matric multidimensional scaling

分类号：Q948.11

摘要：2008年6～10月,对试验区种植的18个1 a生厚朴(Magnolia officinalis)种源的苗高、地径等形态性状进行测量及分析,研究了厚朴不同种源苗高、地径的遗传变异、生长节律及与地理、环境因子的关系。结果表明:各种源的苗高、地径差异极显著,且有显著相关性;不同种源厚朴在6～7月生长缓慢,7月后加快,9月后生长缓慢;环境因子及地理因素对厚朴种源的遗传变异有显著影响,且以地理因素为主;依据种源间苗高、地径生长性状的二维非度量多维标度排序结果,18个种源被划分为5个种源区,根据种源苗期生长优劣,初步筛选出道县、桑植、安化3个优良种源。
The morphological traits, such as seedling height and basal diameter of 1-year-old seedlings of 18 provenances of Magnolia officinalis, were measured from June to October, 2008, and the genetic variation, growth rhythm and their relationships with environmental factors were studied. The results showed the extremely significant differences in seedling height and basal diameter among the 18 provenances, and also a significant correlation each other. For all of the provenances, the growth of seedlings was slower from June to July and after September, and more rapid from July to September. Furthermore, the environmental and geographical factors significantly affected on genetic variation of the Magnolia officinalis provenances, and the 1,atter was more dominant. Moreover, the 18 provenances of Magnolia officinalis could be divided into 5 groups according to the two dimentional Non-matric Multidimensional Scaling in seedling height and basal diameter, and 3 superior provenances were screened out based on the merits of seedling growth, such as Daoxian, Sangzhi and Anhua.