文献类型：期刊文献

中文题名：厚朴种源苗期生长差异及优良种源选择研究

英文题名：A study on discrepancy of seedling growth of Magnolia officinalis provenances and selection of fine provenances

作者：舒枭[1,2] 杨志玲[2] 段红平[1] 杨旭[2] 甘光标[1,2] 于华会[2]

第一作者：舒枭

机构：[1]云南农业大学资源与环境学院;[2]中国林业科学研究院亚热带林业研究所

年份：2009

期号：4

起止页码：311-317

中文期刊名：生态科学

外文期刊名：Ecological Science

收录：CSTPCD;;CSCD:【CSCD_E2011_2012】；

基金：国家科技部公益性林业专项"南方林源多用途药用植物种质保护和选育技术"(200704022)部分内容

语种：中文

中文关键词：厚朴;种源;生长特性;选择

外文关键词：Magnolia officinalis; provenances; growth trait; selection

分类号：Q94;X176

摘要：通过田间生长量实测法,对19个种源的厚朴幼苗进行了连续测定和综合分析,结果表明:厚朴的苗高、地径、地下部干重、根冠比及总含水量等性状在种源间均存在极显著差异,厚朴苗木苗高地径年生长量变化规律均呈现"S"型增长,并且可用Logistic方程拟合.厚朴苗高和地径生长的主要时期是7～9月,该时期苗高和地径分别占全年生长量的77.7%和50.0%。厚朴种源苗期地理变异表现为经纬双向变异.苗高、地径与生物量的相关性分析表明,苗高与地上部鲜重和干重呈显著正相关,地径与总生物量呈显著正相关。通过聚类分析,综合其生长表现,选出5个优良种源是道县、江华、安化、融水及潜山种源。
Growth parameters of field-grown seedlings of 19 Magnolia officinalis provenances were successively measured and comprehensively analyzed in this study. The results show that there are extremely significant difference among provenances in seedling height, basal diameter, root dry weight, root/shoot ratio and water content. The growth patterns of height and basal diameter can be fitted by ＂S＂ curves and can be simulated with Logistic equations. Prosperous phases for seedling growth are from July to September, during which 77.7 % of seedling height and 50.0 % of basal diameter in the whole one year are achieved. Two-way geographic variation in latitude and longitude is observed in the seedling stage. By analyzing the correlation of biomass with seedling height and basal diameter, the authors find that seedling height shows a significantly positive correlation with shoot dry weight and shoot fresh weight, while biomass and basal diameter are significantly correlative. Five superior provenances, including Daoxian, Jianghua, Anhua, Rongshui and Qianshan are selected according to cluster analysis and their growth performance.