互叶白千层粤北引种资源的表型评价  

Phenotypic Evaluation of Introduced Melaleuca alternifolia Resources in Northern Guangdong Province

作　　者：谢佩吾 曾庆团 白青松 陈一群[1] 陈杰连 连辉明[1] 何波祥[1] 张谦[1] Xie Peiwu;Zeng Qingtuan;Bai Qingsong;Chen Yiqun;Chen Jielian;Lian Huiming;He Boxiang;Zhang Qian(Guangdong Provincial Key Laboratory of Silviculture,Protection and Utilization,Guangdong Academy of Forestry,Guangzhou Guangdong 510520,China;Tianjingshan Forest Farm of Guangdong Province,Shaoguan Guangdong 512726,China)

机构地区：[1]广东省林业科学研究院广东省森林培育与保护利用重点实验室,广东广州510520 [2]广东省天井山林场,广东韶关512726

出　　处：《西南林业大学学报（自然科学）》2019年第6期1-8,共8页Journal of Southwest Forestry University：Natural Sciences

基　　金：广东省林业科技创新项目(2017KJCX002)资助

摘　　要：为研究澳大利亚4-松油醇型互叶白千层资源在粤北的生产潜力,从引种的4年生子代林分中随机选择211株,测量生物量、精油产量及品质的9个经济性状,对其生长性状与化学成分进行相关性分析、主成分分析及性状权重测算,从而选择优良单株。结果表明:影响生物量的树高、胸径和树冠截面积变异系数为15.38%~44.74%,衡量有效成分生产力的鲜叶4-松油醇含量变异系数为20.66%,表明选育潜力较大。测定群体中94.58%的单株属于4-松油醇型,精油中4-松油醇占比仅与树高呈极显著正相关;鲜叶4-松油醇含量与鲜叶含油量和4-松油醇占比均具有极显著正相关关系,但与生长性状及其他品质控制成分呈现不同程度的负相关性。采用综合选择指数与15%入选率,评选出生长迅速、鲜叶含油量高、精油中4-松油醇占比大、精油品质达到国际标准要求的单株12株,其5个重要经济性状的现实增益达6.61%~47.63%。In order to disclose the potential productivity of terpinen-4-olchemotype of Melaleuca alternifolia in northern Guangdong Province,a total of 211 individuals were selected from the 4-year-old stand of mixed progenies introduced from Australia,and subjected to an analysis on 9 economic traits concerning with biomass,essential oil productivity and quality-effecting ingredients.The correlation analysis,principal component analysis and weight estimation of traits were used to detect growth traits and chemical components,and screen out superior individuals.The findings indicated that 3 biomass traits,height(HT),diameter at breast height(DBH)and crown sectional area(CSA),had coefficients of variations(CVs)varying from 15.38%to 44.74%.The active-ingredient productivity traits,fresh-leaf terpinen-4-olchemotype concentration,had a CV of 20.66%suggesting a considerable potential in genetic improvement.The analysis on essential oil ingredients revealed that 94.58%of testing individuals were terpinen-4-olchemotype chemotype.The percentage of terpinen-4-olchemotype in essential oil only significantly had positive association with HT.Fresh-leaf terpinen-4-olchemotype concentration was positively and significantly related to both fresh-leaf oil concentration and percentage of terpinen-4-olchemotype,whereas it showed various degrees of negative relatedness to growth traits and other chemical ingredients in essential oil.The selection based on composite selection indices(IC)and 15%of selection ratio screened out a total of 12 superior individuals with outstanding performance in growth,fresh-leaf oil concentration,percentage of terpinen-4-olchemotype and essential oil quality.These superior individuals had realistic gains ranging from 6.61%to 47.63%in terms of 5 key economic traits.

关 键 词：互叶白千层 鲜叶含油量 4-松油醇 优良单株 现实增益 

分 类 号：S722.7[农业科学—林木遗传育种]