摘要
以梅州市平远县、梅县区、丰顺县收集的18株8 a生刨花润楠(Machilus pauhoi)优树为材料,测定其叶面积、叶缘周长、叶片长、叶片宽及叶片长宽比5个表型性状。结果表明,不同单株间叶片的5个表型性状均存在极显著差异(P<0.01),刨花润楠叶片表型性状变异丰富。叶片性状变异系数均超过20%,变异系数大小顺序依次为叶面积>叶片宽>叶片长>叶缘周长>叶片长宽比。聚类分析将18株刨花润楠分为4种类型:第Ⅰ类即普通型刨花润楠,包含平远1号、平远2号、平远3号、平远4号、平远6号、平远8号、平远15号、平远16号、平远17号、平远18号,共10株树;第Ⅱ类是宽叶型刨花润楠,包含平远9号、丰顺10号、丰顺11号、丰顺12号、丰顺13号、平远14号,共6株树;第Ⅲ类为窄叶型刨花润楠,为梅县5号;第Ⅳ类是大叶型刨花润楠,为平远7号。
Eighteen trees of Machilus pauhoi were collected to study leaf phenotypic diversity from 3 counties in Meizhou city. Five indicators were tested to describe foliage traits, including leaf area, leaf limb circumference, leaf length, leaf width and leaf length-width ratio. The results showed that there were significant differences in 5 phenotypic traits among eighteen trees, suggesting abundant diversity in leaf morphology of Machilus pauhoi. The variation coefficients of phenotypic traits were all above 20% and the order was： leaf area〉leaf width〉leaf length〉leaf limb circumference〉length-width ratio. Cluster analysis divided 18 trees into 4 groups. Group Ⅰ was a popular type, including Pingyuan 1 、 2 、 3、 4、 6、 8、 15、 16、 17 and 18. Group Ⅱ was a broad leaf type, including Pingyuan 9~ 14 and Fengshun 10、11、 12 and 13. Meixian 5 and Pingyuan 7 were independently classified into Graups Ⅲ and Ⅳ, which were characterized by narrow leaf and large leaf, respectively.
出处
《广东林业科技》
2015年第3期24-28,共5页
Forestry Science and Technology of Guangdong Province
基金
广东省林业科技创新项目"刨花楠优良种质资源筛选及栽培技术研究与示范"(2014KJCX004-04)
关键词
刨花润楠
叶片形态
表型
Machiluspauhoi
leaf morphology
phenotypic
