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Ming Ding, Beibei Bie, Wu Jiang, Qingqing Duan, Hongmei Du and Danfeng Huang

Watermelon [ Citrullus lanatus (Thunb.) Matsum. and Nakai] seedlings are the main product of the seedling companies in China. With the increases in the cultivation area of watermelon (2.2 million ha in China and 3.8 million ha in the world

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Howard F. Harrison Jr., Chandrasekar S. Kousik and Amnon Levi

objective of this study was to evaluate clomazone tolerance in a diverse germplasm collection of watermelon cultivars and germplasm accessions of Citrullus lanatus and closely related species. Subsequent greenhouse and field experiments were conducted to

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Judy A. Thies and Amnon Levi

, and reproductive indices for selected PIs of Citrullus lanatus var. citroides , C. lanatus var. lanatus , and C. colocynthis and control watermelon cultivars inoculated with M. incognita race 3 in replicated greenhouse tests. z

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Qingqing Duan, Ye Lin, Wu Jiang and Danfeng Huang

Watermelon [ Citrullus lanatus (Thunb.) Matsum. and Nakai] is an important cucurbit crop, occupying 7% of the worldwide area allocated for vegetable production ( Guo et al., 2013 ). China, as the largest producer of watermelons in the world

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W. Patrick Wechter, Chandrasekar Kousik, Melanie McMillan and Amnon Levi

effective in controlling this soilborne disease. Finding resistant germplasm sources and incorporating the resistance into watermelon cultivars should be the most effective strategy for controlling FW in watermelon. Two U.S. PIs of Citrullus lanatus var

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Geoffrey Meru and Cecilia E. McGregor

.T. Vodouhe, R.S. Coulibaly, O. Ahanchede, A. 2008 Importance and practices of egusi crops [ Citrullus lanatus (Thunb.) Matsum. & Nakai, Cucumeropsis mannii Naudin and Lagenaria siceraria (Molina) Standl. cv. ‘Aklamkpa’] in sociolinguistic areas in Benin

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Kelechi Ogbuji, Gloria S. McCutcheon, Alvin M. Simmons, Maurice E. Snook, Howard F. Harrison and Amnon Levi

). Fig. 1. High-performance liquid chromatography. Spectral patterns of flavonoids and caffeoyl-quinic acid (CQA) derivatives found in ‘Charleston Gray’ and ‘Mickey Lee’ watermelon, Citrullus lanatus var. lanatus . Refer to Table 1 for the meaning of

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Judy A. Thies, Jennifer J. Ariss, Richard L. Hassell, Sharon Buckner and Amnon Levi

watermelon. Rootstock genotypes. Seedless watermelon ‘Tri-X 313’ was grafted onto five wild watermelon ( Citrullus lanatus var. citroides ) germplasm lines developed at the U.S. Vegetable Laboratory (RKVL 301, RKVL 302, RKVL 303, RKVL 316, and RKVL 318

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R.L. Jarret, S. Kresovich, T. Holms, Janelle Evans and Z. Liu

Simple sequence repeats (SSRs) were isolated from a size-fractionated genomic DNA library of watermelon (Citrullus lanatus L. cv. New Hampshire Midget). Screening of the library with five oligonucleotide probes, including (GT)11, (AT)11, (CT)11, (GC)11, and (TAA)8, detected the occurrence of 96 positive colonies among ≈8000 recombinants. Automated DNA sequencing revealed the presence of SSRs. PCR primer pairs homologous to the regions flanking the SSR loci were synthesized commercially and used to screen 56 watermelon genotypes for the occurrence of SSR polymorphisms. Amplification products were separated using nondenaturing PAGE. Eighty percent of the primer pairs produced amplification products of the expected size and detected polymorphisms among the genotypes examined. The use of SSRs for watermelon germplasm characterization is discussed.

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Judy A. Thies, Sharon Buckner, Matthew Horry, Richard Hassell and Amnon Levi

USDA, ARS maintains 134 U.S. PIs of the wild-type watermelon Citrullus lanatus var. citroides collected in Africa, which is considered the possible center of origin of watermelon ( Jarret et al., 1997 ). In previous studies, we identified a