不同地理种源猴樟苗期生长变异性  

Growth Variability of Cinnamomum bodinieri Seedlings from Different Geographical Provenances

作　　者：张怡[1] 韦小丽[1] 王娈[1] 陈模芳[1] 

机构地区：[1]贵州大学林学院,贵州贵阳550025

出　　处：《西南农业学报》2014年第5期2162-2167,共6页Southwest China Journal of Agricultural Sciences

基　　金：贵州省农业科技攻关课题"阔叶乡土树种猴樟培育关键技术研究与示范"[黔科合NY字(2009)3061]

摘　　要：探明不同地理种源猴樟的苗期生长变异,为合理选择猴樟人工林种源提供参考,采集6个不同地理种源猴樟种子进行播种育苗试验,观察其出苗状况,测定各个种源猴樟苗高、地径生长及生物量t,分析猴樟不同种源苗期生长状况.结果表明：在贵阳地区,不同种源猴樟的出苗时间、出苗率、生长发育期及其持续时间均存在差异,贵州花溪种源幼苗萌发最早,云南腾冲种源停止生长最晚.6个种源中生长期最长的是云南腾冲种源（238 d）,其次是贵州凯里种源（224 d）,最短的是贵州兴仁种源（198 d）.不同种源苗高、地径生长及生物量差异显著,其优劣种源间变异幅度较大：苗高变化范围为33.05 ～84.60 cm,变异系数为29.27％;地径变化范围为9.23～13.32mm,变异系数为12.46％;总生物量变化范围为32.44 ～109.39 g,变异系数为43.23％.综合各种源的生长表现,初步选出云南腾冲种源为贵阳地区苗期生长表现优良的种源.The height,ground diameter and biomass of Cinnamomun bodinieri seedlings from six geographical provenances were determined to study growth variability of Cinnamomum bodinieriseedlings from different geographical provenances and to provide a reference for rational selection of Cinnamomum bodinieri provenance.There were differences in emergence time,emergence rate,growth period and duration among different seedlings.The seedling from Huaxi,Guizhou was the first to sprout and the seedling from Tengchong,Yunnan was the last to stop growing.The longest growth stage of the seedling from Tengchong,Yunnan was 238 d,followed by the seedling from Kaili,Guizhou （224 d） and the growth stage of seedlings from Xingren,Guizhou was the shortest （198 d）.There were differences in height,ground diameter and biomass among different seedlings and the variation range and variable coefficient of height,ground diameter and biomass were 33.05-84.60 cm and 29.27 ％,9.23-13.32 mm and 12.46 ％,and 32.44-109.39 g and 43.23 ％ respectively.In conclusion,Cinnamomum bodinierifrom Tengchong,Yunnan is the ideal provenance with good growth performance in Guiyang.

关 键 词：猴樟 种源 苗期生长 变异 贵阳地区 贵州 

分 类 号：S722.31[农业科学—林木遗传育种]