油松26个种源苗期生长及光合特性比较  

Seedling Growth and Photosynthetic Characteristics of 26 Provenances of Pinus tabulaeformis

作　　者：赵晴晴[1] 王傲楠 王壹[1] 黄琛[1] 杨俊明[1] 张国君[1] 

机构地区：[1]河北科技师范学院,昌黎066600

出　　处：《东北林业大学学报》2016年第11期19-23,共5页Journal of Northeast Forestry University

基　　金：林业公益性行业科研专项(201004021)资助

摘　　要：为了筛选油松优良种源,调查了26个种源1年生和2年生苗的株高和地径,1年生苗的根长、侧根数、根茎鲜干质量,以及苗期的光合参数。分析了各性状间的相关系数,将2年生苗高和地径作为指标进行油松不同种源苗期生长的综合评价。结果表明:1年生和2年生苗的株高和地径在26个种源间均差异显著,1年生苗的茎鲜质量和根干质量差异显著;光合速率、蒸腾速率和叶片气孔导度均存在显著差异。株高和地径的隶属函数值高于当地种子园种源(平泉)的5个种源分别是内蒙古宁城、辽宁北票、山西隰县、山西和顺和河北围场。We studied the seedling growth and photosynthetic traits of 26 provenances of Pinus tabulaeformis to select superior provenances .We analyzed the variance and correlation on height , basal diameter ,root length , root and stem fresh and dry weight of 1-and 2-year seedlings , photosynthetic parameters of those provenance, and measured the membership value of height and basal diameter of 26 provenances .The variance on growth and photosynthetic traits of 1-and 2-year seedlings among 26 provenances were both significant for height , basal diameter and photosynthetic parameters , but for root dry weight and stem fresh weight of 1-year seedlings .Based on correlation coefficients between growth traits and photosynthetic parame-ters, height and basal diameter were selected for comprehensive evaluation .The top five provenances of P.tabulaeformis were Neimeng Ningcheng , Liaoning Beipiao , Shanxi Xixian , Shanxi Heshun and Hebei Weichang according to average of membership value of height and basal diameter .

关 键 词：油松 种源 苗木 株高 地径 

分 类 号：S791.15[农业科学—林木遗传育种] S723.1[农业科学—林学]