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Valéria Santos Cavalcante, Renato de Mello Prado, Ricardo de Lima Vasconcelos, Hilário Júnior de Almeida and Thais Ramos da Silva

Watermelon is a noteworthy vegetable crop because it is produced in several countries worldwide. Watermelon consumption is important for humans, due to its high beta-carotene and lycopene content and the fact that it is a rich source of antioxidants

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Karen R. Harris, W. Patrick Wechter and Amnon Levi

Like with many vegetable crops, U.S. watermelon cultivars have been bred for a fairly narrow set of horticultural traits suitable to the needs of growers, shippers, and consumers. These highly specific breeding efforts have resulted in 92% to 99

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María Victoria Huitrón-Ramírez, Marcia Ricárdez-Salinas and Francisco Camacho-Ferre

Watermelon is one of the world's most important vegetables with a global production of 93.2 Mt and an area of 3.60 M·ha −1 . Production has increased by 15% in the last 7 years. Mexico is one of the main producers of watermelon along with China

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Angela R. Davis, Amnon Levi, Antonia Tetteh, Todd Wehner, Vincent Russo and Michel Pitrat

Powdery mildew affects many cucurbit crops worldwide, limiting yield and increasing the need for fungicide application. Except for a few scattered cases of this disease on watermelon fruit ( Ivanoff, 1957 ; McLean, 1970 ; Robinson and

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Jordan L. Hartman, Penelope Perkins-Veazie and Todd C. Wehner

The American Heart Association endorses watermelon as a heart-healthy food due to its low sodium and fat content (American Heart Association, 2018). Watermelon contains both lycopene and citrulline, bioactive compounds with implications in both

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Gilbert Miller, Ahmad Khalilian, Jeffrey W. Adelberg, Hamid J. Farahani, Richard L. Hassell and Christina E. Wells

) found 63% to 78% of tomato root length in the top 10 cm. There is little published information on the root characteristics of watermelon [ Citrullus lanatus (Thunb.) Matsum and Nakai] grown under drip irrigation with polyethylene film mulch. An early

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Benjamín Moreno, Cristián Jacob, Marlene Rosales, Christian Krarup and Samuel Contreras

a major limitation in watermelon production ( Miguel et al., 2004 ). Yield losses of up to 80% have been reported in watermelon crops affected by this pathogen ( Zhang et al., 2012 ). Fusarium species remain in the soil for years as chlamydospores

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Maria Victoria Huitrón, Manuel Diaz, Fernando Diánez, Francisco Camacho and Antonio Valverde

In recent years, the cultivation of triploid watermelon in Almeria has increased significantly. The annual increase in surface area expanded to this crop has been maintained ( Fig. 1 ). The efficacy of grafting to control soil-borne diseases

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P.M. Perkins-Veazie, J.K. Collins, N. Maness and B. Cartwright

A study was conducted to characterize the quality of seedless and seeded watermelon. The seeded cultivars 'Jubilee', 'Black Diamond' and 'Allsweet' were compared with seedless 'King of Hearts' for firmness, lycopene content, rind thickness, soluble solids concentration (SSC), ascorbic acid, sugar composition, sweetness index and sensory qualities. 'King of Hearts' melons had higher firmness and lycopene values but a lower sweetness index compared with the other cultivars. 'Black Diamond' and 'Jubilee' cultivars had greater rind thickness compared to the other cultivars. 'Allsweet' and 'Jubilee' fruit had the highest ascorbic acid concentration. 'Black Diamond' had greater fructose and glucose levels than 'Jubilee' or 'King of Hearts' but was lowest in SSC. Untrained taste panelists preferred 'Jubilee' and 'Allsweet' melons. In this study, SSC, sugar composition, sweetness index or firmness were not good indicators of watermelon preference.

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Karen L.B. Gast and Charles W. Marr

Several new seedlees watermelon cultivars have recently been released or tested by seed companies. Their greatest asset is their seed-lessness. Melon quality, as determined by consumer acceptance may be a greater challenge.

A consumer preference survey was conducted to determine the acceptability of ten seedless cultivars and breeding lines. All cultivars were rated as acceptable and significant differences were found among the cultivars. Comments expressed by consumers indicated that the seedless melons were not as flavorful as seeded cultivars. No correlations were found between soluble solids and preference nor firmness and preference. Further investigation will be made as to whether the convenience and flavor are worth the greater cost of the seedless watermelon.