桉树伞房属4个种在广东乐昌的早期生长表现  

Early Growth Performance of Four Eucalypt Species in the Genus Corymbia in Lechang County

作　　者：刘天颐[1] 刘纯鑫[1] 孔凡启 李庆芳[1] 高永[1] 周晓文[1] 王爱平[1] 黄少伟[1] 

机构地区：[1]广东省森林植物种质创新与利用重点实验室华南农业大学林学院,广东广州510642 [2]广东省林业种苗与基地管理总站,广东广州510173

出　　处：《华南农业大学学报》2011年第2期70-75,共6页Journal of South China Agricultural University

基　　金：广东省科技计划项目(2002C20134;2008A020100013)

摘　　要：采用随机完全区组设计、方差分析及Duncan’s检验等方法分析了引自澳大利亚的桉树伞房属4个种在广东省乐昌试验点3年生和5年生2个年度的生长表现,并根据5年生时的生长表现对种源和家系进行初步选择.2个试验组内不同年度间方差分析结果显示:各生长指标在试验组内树种间的表现并不统一,目前尚不能进行树种选择;试验组Ⅰ内2个年度方差分析结果显示除3年生时胸径的生长差异不显著外,其余指标在种源间都为显著差异,试验组Ⅱ内2个年度除5年生时平均单株材积为差异不显著外,其余指标在种源间均为显著差异;2个试验组内不同年度间各生长指标在家系间都为显著差异.这4个树种生长量最大的是大叶斑皮桉Corymbia henryi,其次是柠檬桉C.citriodora、斑皮柠檬桉C.variegata和斑皮桉C.maculata,平均单株材积分别为0.020 15、0.018 77、0.014 25和0.006 25 m3.初步选择出平均单株材积高于CK2的种源和家系,即柠檬桉111 90种源,斑皮柠檬桉的5 567、10 248、10 253种源及分别来自柠檬桉、斑皮柠檬桉和大叶斑皮桉的26个家系,占家系总数的30.59%.Early growth performance of the four eucarlypt species in the genus Corymbia from Australia was investigated.The trial was divided in two groups,randomized complete block design（RCB） and the same control was used in every group.Variance analysis of 3-and 5-year-old growth traits showed that the performance of the height,diameter at breast height（DBH） and single-tree volume were not the same between species,indicating that it was not the time for species chosen;in group one,the growth trials had significant differences among provenances except 3-year-old DBH.In group two,the growth trials had significant differences among provenances except 5-year-old single-tree volume;all the growth trials had significant differences among families.The results of 3-and 5-year-old trials in Lechang were summarized as follows：The 5-year-old growth traits for species showed that C.henryi has the maximal growth,C.citriodora and C.variegata was the next,and C.maculata was the minimal.The single-tree volume of the four species was 0.020 15,0.018 77,0.014 25 and 0.006 25 m3 respectively.Four provenances and twenty-six families were selected,accounting for 30.59% of all families.

关 键 词：伞房属 种源 家系 早期选择 

分 类 号：S722.5[农业科学—林木遗传育种]