Analysis on genetic diversity of watermelon germplasm resources
DAI Zhaoyi
WANG Yunqiang
LIU Zhixiong
GUO Fengling
JIAO Chunhai
QIU Zhengming
Abstract：Genetic diversity of 88 accessions watermelon germplasm resources were analyzed using 37 phenotypic charac?ters and 22 simple repeat sequences(SSR)molecular markers. The results showed that the variations in fruit shape,quality and leaf were the main sources of variations in phenotypic characters. The variance contribution of the first three principle components were 13.6%,11.8%and 9.0%,cumulative proportion was 34.4%. According to the cluster analysis of the pheno?typic characters,the watermelon germplasm resources were divided into 2 categories at euclidean distance of 15.0,and 3 cat?egories at euclidean distance of 13.5. The SSR molecular markers amplified 55 polymorphic loci,the average polymorphic information content(PIC)was 0.41. The cluster analysis using UPGMA method showed that 88 watermelon germplasm re?sources were classified as 4 groups. The variance contribution of the first three principal coordinates were 22.8%,10.8%and 9.1%,cumulative proportion was 42.7%. In conclusion,the 88 watermelon germplasm resources contains relatively abun?dant genetic variations.
Keywords：Citrullus lanatusGermplasm resourcesGenetic diversityPhenotypic characterSSR molecular markers
Publication Date：2015-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 5-9 )