广西植物2012，Vol.32Issue(5)：656-662,7.DOI:10.3969/j.issn.1000-3142.2012.05.017
不同种源及基质对水青树种子萌发及幼苗初期生长的影响
Effects of different geographical provenances and matrix on seed germination and seedling initial growth of Tetracentron sinense
摘要
Abstract
In order to explore the bottleneck of natural regeneration and endangered mechanism in Tetracentron sinense population,the morphology, physiological characteristic and seed germination characteristics of the seeds from four different geographical provenances were measured,and the effects of different temperature, matrix and geographical provenances on seed germination and seedling initial growth were studied. The results are as follows:(l)There were significant difference in the weight per 1000 seeds,plumpness,morphology of different geographical provenances; (2) Germination rate of seed from the different geographical provenances was respectively 74. 67%(Leibo) ,41%(Mabi-an), 67 % (Jiuzhaigou) ,0(Meigu) , accordingly the corresponding germination force was respectively 38. 33%,10%, 27. 33% ,0%(P<0. 01) ; (3)The seeds in the habitat humus soil had the better advantage in germination rate,force and seedling initial growth than those in soil from habitat or sandy soil, suggesting that the habitat soil was not the endangered factor; (4)The room temperature was better for the seed germination and seedling initial growth than constant temperature,indicating that appropriate alternating temperature was advantage to the seed germination and seedling initial growth; (5)Based on the analysis of seed morphology and germination characteristics, the quality of T. sinense seeds from Leibo were better than that of Mabian and Jiuzhaigou.关键词
水青树/种子/萌发/幼苗Key words
Tetracentron sinense/seed/germination/seedling分类
农业科技引用本文复制引用
曹玲玲,甘小洪,何松..不同种源及基质对水青树种子萌发及幼苗初期生长的影响[J].广西植物,2012,32(5):656-662,7.基金项目
国家"十一五"科技支撑计划项目(2006BAD19B02) （2006BAD19B02）
四川省教育厅青年基金(2006B038) （2006B038）
