Morphological Diversity Analysis of Red-seed Watermelon (Citrullus lanatus ssp. vulgaris var. megalaspermus Lin et Chao) Germplasm Resources  

红籽瓜种质资源形态学多样性分析(英文)

作　　者：柳唐镜[1,2] 张棵[1,2] 吴素萍 

机构地区：[1]广西壮族自治区农业科学院园艺研究所,广西南宁530007 [2]广西信都红籽瓜研究发展中心,广西贺州542813 [3]贺州市八步区封阳信都红瓜子专业合作社,广西贺州542813

出　　处：《Agricultural Science & Technology》2013年第3期458-465,共8页农业科学与技术（英文版）

基　　金：Supported by the National Program for Space Breeding Special Fund of(2006HT100113);China Agriculture Research System(CARS-26)~~

摘　　要：[Objective] This study aimed to analyze the morphological diversity of red- seed watermelon （Citrullus lanatus ssp. vulgaris var. megalaspermus Lin et Chao） germplasm resources. [Method] Multiple cluster analysis and principal components analysis on the morphological traits of 51 red-seed watermelon germplasm resources were carried out. [Result] The coefficient of variations （CVs） of 39 morphological traits in 51 red-seed watermelon idioplasm resources ranged from 5.37% to 66.95%, with an average of 22.87%. The average of Shannon diversity information indices was 1.55. Among them, the Shannon diversity information index of seed length was the highest （2.16） and that of seed shell figure pattern was the lowest （0.32）. In ad- dition, the morphological diversity information indices of quantity characters were higher than that of quality characters. The principal components analysis revealed that the variance contribution rates of the first, second and third principal compo- nents were 19.49%, 15.32% and 9.55%, respectively. Cluster analysis divided the 51 materials into three broad branches based on the morphological traits. There was only one material in the fist branch and two in the second branch, and all the three materials were wild. The other 48 materials were divided into the third branch and all of them were cultivars. [Conclusion] This study provided a theoretical basis for the protection and utilization of red-seed watermelon resources.[目的]旨在分析红籽瓜种质资源形态学多样性。[方法]对51份红籽瓜种质资源形态学性状进行聚类分析和主成分分析。[结果]红籽瓜种质资源39个形态性状变异系数为5.37%～66.95%,平均变异系数为22.87%。Shannon多样性信息指数平均值为1.55,种子长度Shannon多样性信息指数最高,为2.16;种皮覆纹最低,为0.32,数量性状多样性信息指数大于质量性状。通过主成分分析,第一主成分方差贡献率为19.49%,第二主成分方差贡献率为15.32%;第三主成分方差贡献率为9.55%。基于形态学的聚类分析将51份红籽瓜种质分为三大类,其中第一类仅1份材料,第二类2份材料,前两类均为野生种材料。第三类48份材料,为栽培种材料。[结论]为红籽瓜种质资源保护和利用提供理论依据。

关 键 词：Red-seed watermelon Germplasm resources Morphological diversity Cluster analysis Principal component analysis 

分 类 号：S651[农业科学—果树学]