摘要
为了给评价海南荔枝资源多样性提供更多基础资料,对193份海南荔枝资源叶片的6个质量性状、9个数量性状的变异进行了分析。结果显示,6个质量性状的多样性指数均大于1,说明品种间变异较大,仅叶基形状与小叶形状、叶尖形状有显著相关关系。9个数量性状中变异系数最大的为叶面积(21.74%),变异系数最小的为比叶重(11.31%);除叶形指数与个别性状之间无显著相关关系外,各指标间均有显著或极显著相关关系。聚类分析结果显示193份荔枝资源可分为4大类,第Ⅰ类有7份,是所有分类中叶片最为厚实宽大的种质。第Ⅱ类有40份,比叶重最低,其余指标大小仅次于第Ⅰ类。第Ⅲ类有10份,是属于叶片窄小且薄的种质,其比叶重最高。第Ⅳ类有136份,是处于中间态的资源,性状间变异的范围较大。上述结果表明,海南荔枝叶片性状多样性丰富,可以用于评价资源的多样性。本研究为进一步研究利用海南荔枝资源提供了基础。
To provide more basis and basic data for evaluating the diversity of litchi resources in Hainan,the variation of 6 qualitative traits and 9 quantitative traits in the leaves of 193 accessions of litchi germplasm were analyzed by using correlation analysis and cluster analysis.The results showed that the diversity indexes of 6 qualitative traits,i.e.,leaflet orientation,leaflet shape,leaf base shape,leaf tip shape,leaf posture and leaf edge shape,were all greater than 1,indicating that the tested accessions had large variations in these traits.Only the leaf base shape had a significant correlation with the leaflet shape and the leaf tip shape among the 6 qualitative traits.Within the 9 quantitative traits,leaf area had the highest coefficient of variation(21.74%),and specific leaf weight had the lowest one(11.31%).All the indexes had significant or highly significant correlation with each other,except for the leaf shape index,which had no significant correlation with several traits.The cluster analysis showed that the 193 accesions of litchi germplasm could be divided into 4 categories,including 7 accesions in the first category,which had the thickest and broadest leaflets.There were 40 samples in category II,with the lowest specific leaf weight,and the values of the other leaf traits were only inferior to those of category I.Category III contained 10 accessions,which belong to germplasm with narrow and thin leaves,and their specific leaf weight was the highest.Category IV had 136 accessions,which were in the intermediate state of all the resources,and their leaf traits varied greatly.These results indicated that the diversity of leaf traits of litchi in Hainan is abundant,which can be used to evaluate the diversity of litchi gemplasm.
作者
林祺英
李芳
蔡汝鹏
张蕾
黎瑶
李焕苓
王家保
LIN Qiying;LI Fang;CAI Rupeng;ZHANG Lei;LI Yao;LI Huanling;WANG Jiabao(School of Plant Protection/Ministry of Education Key Laboratory of Green Prevention and Control of Tropical Plant Diseases and Pests,Hainan University,Haikou,Hainan 570228,China;Environment and Plant Protection Institute,Chinese Academy of Tropical Agricultural Sciences,Haikou,Hainan 571101,China;Tropical Crops Genetic Resources Institute,Chinese Academy of Tropical Agricultural Sciences,Haikou,Hainan 571101,China)
出处
《热带生物学报》
2023年第6期628-635,共8页
Journal of Tropical Biology
基金
海南省重点研发计划项目(ZDYF2021XDNY156)
海南省种质资源保护项目:海南省荔枝种质资源补充收集、整理与评价
国家荔枝龙眼产业技术体系(CARS-32-01)。
关键词
荔枝
叶片
多样性
相关分析
聚类分析
litchi
leaf
diversity
correlation analysis
cluster analysis
