文献类型：期刊文献

中文题名：厚朴种子大小变异对萌发及幼苗生长的影响

英文题名：The Effect of Seed Size Variation of Houpoea officinalis on Seed Germination and Seedling Growth

作者：麦静[1] 杨志玲[1] 杨旭[1] 陈慧[1] 雷虓[1]

第一作者：麦静

机构：[1]中国林业科学研究院亚热带林业研究所

年份：2015

卷号：34

期号：4

起止页码：32-36

中文期刊名：种子

外文期刊名：Seed

收录：CSTPCD;;北大核心:【北大核心2014】；

基金：浙江省自然科学基金重点项目(编号:Z 3100041)

语种：中文

中文关键词：厚朴;种子大小;种子萌发;幼苗生长

外文关键词：Houpoea officinalis; seed size; seed germination; seedling growth

分类号：S567.11

摘要：研究了不同大小厚朴种子的萌发及幼苗生长特征。结果表明：厚朴种子大小集中在0.1-0.28 g之间,变异接近3个数量级,呈现稍偏左侧的偏态分布;种子大小与萌发能力呈正相关,发芽率、平均发芽率和日均发芽率、发芽值在3个等级间差异分别达到显著和极显著水平;种子大小对苗高、地径有一定影响,尤其是地径在各等级间差异显著。幼苗生长前期,苗高增长速率大于地径生长速率,后期苗高生长放缓,进入营养物质积累阶段;大种子可溶性糖、可溶性蛋白含量在层积前与层积后都保持较高水平;种子萌发及幼苗生长初期主要依赖内部营养物质,在育苗造林中选择较大种子可以保持较高成活率及生长优势。
The seed germination and seedling characteristics of different size seed were studied in Magnolia officinalis. The results show that the seed size variation is close to 3 order of magnitudes,most of single seed weight are between 0. 1- 0. 28 g. Seed size present slant on the left side of the skew distribution. There are significant positively correlation between seed size and germination percentage and mean germination rate,and very significant positive correlation between average daily germination rate and germination value. Seedling growth rate is greater than the ground diameter growth rate in the early stage,seedling growth slowing and start nutrients accumulation phase in the late. Seed size have a certain influence on seedling height and ground diameter,and seed size and ground diameter were positively correlated in each grade.