9种大型丛生竹枝条扦插成活率的相关性分析  

Correlation Analysis of Cutting Survival Rate of Nine Big-sized Sympodial Bamboo Shoots

作　　者：蒙兰杨 邓莉明 罗筱娥 黄永利 黄大勇[2] 唐国强 覃开展 MENG Lan-yang;DENG Li-ming;LUO Xiao-er;HUANG Yong-li;HUANG Da-yong;TANG Guo-qiang;QIN Kai-zhan(Nanning Academy of Forestry,Nanning,Guangxi 530107,China;Guangxi Forestry Research Institute,Nanning 530002,China)

机构地区：[1]南宁市林业科学研究所,广西南宁530107 [2]广西壮族自治区林业科学研究院,南宁530002

出　　处：《广西林业科学》2018年第1期105-109,共5页Guangxi Forestry Science

基　　金：南宁市科学研究与技术开发项目(20162322)

摘　　要：以英德麻竹(Dendrocalamus latiflorus)、田林麻竹、马来甜龙竹(Dendrocalamus asper)、吊丝球竹(Dendrocalamopsis beecheyana)、越南巨竹(Dendrocalamus yunnanicus)、撑绿杂交竹(Bambusa pervariabilis×Dendrocalamopsis grandis)30号、撑绿杂交竹6号、壮绿竹、龙竹的枝条为研究材料,在苗圃进行扦插育苗试验研究。结果表明:所有竹种枝条在扦插13~21 d开始萌芽,20~40 d为萌芽高峰期。扦插3个月后,吊丝球竹、撑绿杂交竹30号、马来甜龙竹、英德麻竹的扦插成活率和出圃率比较高,适合采用扦插繁殖。撑绿杂交竹30号、马来甜龙竹、越南巨竹、撑绿杂交竹6号、英德麻竹的成活系数与枝条直径和竹壁厚度呈显著正相关,说明扦插时选择粗壮、竹壁较厚的枝条成活率高;马来甜龙竹、越南巨竹、撑绿杂交竹30号、田林麻竹的萌芽长度与枝条直径呈显著正相关,说明选择粗壮的枝条,其扦插苗长势好,出圃率高。Taking the bamboo shoots of YingdeDendrocalamus latiflorus,Tianlin D.latiflorus,D.asper,Dendrocalamopsis beecheyana,D.yunnanicus,Bambusa pervariabilis×Dendrocalamopsis grandis 30#,B.pervariabilis×Dendrocalamopsis grandis 6#,D.giganteus,D.valida as research materials,cutting experiments were conducted in nursery.Results showed that all the bamboo species began to sprout from the 13th to 21th day after cutting,and the peak period of germination rate was from the 20th to 40th day.Three months after cutting,the cuttage survival rate and seedling rate ofD.beecheyana,B.pervariabilis×Dendrocalamopsis grandis 30#,D.asper,YingdeD.latiflorus was relatively high,so these four kinds of bamboo were suitable for cutting propagation.The survival coefficient of B.pervariabilis×Dendrocalamopsis grandis 30#,D.asper,D.yunnanicus,YingdeD.latiflorus had significantly positive correlation with diameter of shoots and culm wall thickness,which indicated that the survival rate of cuttings was high with thick culm wall.The bud length of D.asper,D.yunnanicus,Tianlin D.latiflorus,B.pervariabilis×Dendrocalamopsis grandis 30#was positively related to the diameter of shoot,which showed that the selection of sturdy branches was good for the cutting seedling of these bamboo species,and the qualified seeding rate was high.

关 键 词：大型丛生竹 枝条扦插 成活率 相关性 

分 类 号：S795.5[农业科学—林木遗传育种]