Morphological Diversity Analysis of Red-seed Edible Seed Watermelon Germplasm Resources
LIU Tang-jing，Yu Hai-bin，Zhang Ke，Wu Su-ping
1Laboratory of Tropical Cucurbits and Vegetables, Sanya Science and Technology Academy for Crop Winter Multiplication, Sanya 572000, Hainan, China; 2Sanya Comprehensive Experimental Station, Industry Technology System of Watermelon and Melon in China, Sanya 572000, Hainan, China; 3Research and Development Center for Xindu Red-seed Edible Seed Watermelon in Hezhou City Guangxi Province, Hezhou 542813, Guangxi, China; 4Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of sciences, Beijing 100101, China; 5Laboratory of Melon and Watermelon, Huazhong Agricultural University, Wuhan 430070, Hubei, China
Abstract：Shape multiple cluster analysis and principal components analysis were carried out up to 51 red-seed edible seed watermelon（Citrullus lanatus ssp. vulgaris var. megalaspermus Lin et Chao.）germplasm resources. The results indicated that the red-seed watermelon idioplasm resources 39 shape character coefficient of variation is 5.37 %-66.95 %, the average coefficient of variation is 22.87 %. The average Shannon multiple information indices are 1.55, the seed length Shannon multiple information indices are the highest 2.16. The seed shell duplicate grain is the lowest 0.32. The quantity character shape multiple information indices are bigger than the quality character. Through the principal components analysis, the first principal components variance technical progress factor is 19.49 %, the second principal components variance technical progress factor is 15.32 %. The third principal components variance technical progress factor is 9.55 %. Gathers based on the shape character's cluster analysis, 51 materials are divided into 3 broad headings. The first kind has only 1 material, the second kind has 2 material. The first 2 kinds are all wild species materials. The 48 material of the 3rd kind are cultivated material.
