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Nihat Guner, Luis A. Rivera-Burgos and Todd C. Wehner

Watermelon [ Citrullus lanatus (Thunb.) Matsum. & Nakai] is a major cucurbit crop that accounts for 7.5% of the world area devoted to vegetable crop production ( FAO, 2015 ). In the United States, watermelon is used fresh as a dessert, or in salads

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Lingli Lou and Todd C. Wehner

Watermelon [ Citrullus lanatus (Thunb.) Matsumura & Nakai] is a major vegetable crop cultivated as an annual in warm regions worldwide. Watermelon accounts for 6.8% of vegetable production area around the world ( Guner and Wehner, 2004 ). Harvested

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George E. Boyhan, Suzanne O’Connell, Ryan McNeill and Suzanne Stone

Watermelon is an important crop worldwide, with 3.5 million ha produced ( Food and Agricultural Organization of the United Nations, 2016 ). The United States represents just over 1% of world watermelon production, whereas China represents more than

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Angela R. Davis, Amnon Levi, Todd Wehner and Michel Pitrat

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Gregory S. Hendricks, Sanjay Shukla, Kent E. Cushman, Thomas A. Obreza, Fritz M. Roka, Kenneth M. Portier and Eugene J. McAvoy

. Florida is also a leader in watermelon production, ranking first during 2005 among the top five leading states in the country along with Texas, California, Georgia, and Arizona for production and value [ U.S. Department of Agriculture (USDA), 2006a

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S. Alan Walters

Although mini triploid watermelons are a relatively new specialty vegetable, they have captured a segment of the watermelon market due to their convenience ( Maynard and Perkins-Veazie, 2004 ). These types of watermelons garner a premium retail

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Nihat Guner and Todd C. Wehner

Watermelon [Citrullus lanatus (Thunb.) Matsum. & Nakai] is a major vegetable crop in the world, accounting for 6.8% of the world area devoted to vegetable crops. Watermelon is a useful vegetable crop for genetic research because of its small genome size, and the many available gene mutants. The watermelon genes were originally organized and summarized in 1944, and have been expanded and updated periodically. However, the action of some watermelon genes has not been described clearly in some cases. Also, the interaction of multiple gene loci that control similar traits needs to be described more clearly. Finally, it is necessary to identify the inbred lines having each published gene mutant, for use as type lines in studies of gene action, allelism, and linkage. The objective of this work was to update the gene list, identify the cultivar or line having each gene mutant, and collect seeds of the lines for use by interested researchers. In addition, the gene descriptions were expanded and clarified, information on gene interactions was added, and errors in naming or citing previously described genes were corrected. New genes that have not previously been described (cr, Ctr, dw-3, ms-2, Ti, ts and zym-FL) were added to the list, for a total of 163 watermelon gene mutants.

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Peter J. Dittmar, David W. Monks and Jonathan R. Schultheis

Triploid (seedless) watermelons have increased in popularity and compose three fourths of the watermelon production in the United States ( U.S. Department of Agriculture, Economic Research Service, 2005 ). Triploid watermelons produce nonviable

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Cecilia E. McGregor and Vickie Waters

Watermelon ( Citrullus lanatus ) production acreage in the United States in 2010 was 132,600 acres with a value of ≈$500 million. The percentage of watermelon production devoted to seedless fruit has increased dramatically from 51% in 2003 to 85% in

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Haiying Zhang, Shaogui Guo, Guoyi Gong, Yi Ren, Angela R. Davis and Yong Xu

Watermelon PIs resistant to this disease may be valuable in watermelon breeding programs. We evaluated 2100 PI S1 lines, representing self-pollinated progeny of 820 accessions from the U.S. Citrullus sp. PI collection, for resistance to race 2WF