Low genetic diversity indicates the need to broaden the genetic base of cultivated watermelon
By A. Levi, C. Thomas, T. Wehner, X. Zhang. 2001
147 citations recorded by the source corpus.
Genetic diversity and relatedness were assessed among 46 American cultivars of watermelon (Citrullus lanatus var. lanatus), and 12 U.S. Plant Introduction accessions (PIs) of Citrullus sp. using 25 randomly amplified polymorphic DNA (RAPD) primers. These primers produced 288 distinct reproducible bands that could be scored with high confidence among cultivars and PIs. Based on the RAPD data, genetic similarity coeffi- cients were calculated and a dendrogram was constructed using the unweighted pair- group method with arithmetic average (UPGMA). The cultivars and C. lanatus var. lanatus PIs differentiated at the level of 92% to 99.6% and 88% to 95% genetic similarity, respectively. In contrast, the C. lanatus var. citroides, and C. colocynthis PIs were more divergent and differentiated at the level of 65% to 82.5% and 70.5% genetic similarity, respectively. The low genetic diversity among watermelon cultivars in this study empha- sizes the need to expand the genetic base of cultivated watermelon.
Subfields: Genetics, Plant Science
View Paper: https://www.semanticscholar.org/paper/28faed8cfa21ffbe33866a516b44f4f1cc97e490
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In Plant Science
Citations in the corpus
- Worldwide genotyping of castor bean germplasm (Ricinus communis L.) using AFLPs and SSRs (2008, background): “In contrast, germplasm collections of watermelon (Levi and Thomas 2001) and peanut (Kochert et al. 1991; Lanham et al. 1992; He and Prakash 2001) typically report levels of genetic diversity that are as low, or lower than those found in castor bean (but also see Hopkins et al. 1999).”