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Citrullus lanatus (Thunb.) Matsum. & Nakai - Cucurbit Breeding ...

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discarded the hypothesis of a quantitative type of inheritance and suggested that different genes, or a tissue-<br />

specific expression of the same genes, might be involved in the pigmentation of different portions of the fruit.<br />

A new possibility for the development of watermelon fruit with novel rind type results from our<br />

verification of the inheritance of the spotted phenotype (Sp gene) when transferred from 'Moon and Stars' to<br />

cultivars with gray and light green background. The spotted trait was more evident on the gray background,<br />

while it was undetectable on many fruit with light green rind. In addition, the presence of the small spots (stars)<br />

showed to have a random distribution on fruit and leaves, while the presence of large yellow blotches (moons)<br />

was inconsistent and may be determined by the coalescence of many stars. Moons were present only on fruit,<br />

even though in a single instance, large, irregular yellow areas were observed on the foliage.<br />

Literature Cited<br />

<strong>Cucurbit</strong> Gene List Committee. 1982. Update of cucurbit gene list and nomenclature rules. <strong>Cucurbit</strong> Genetics<br />

Cooperative Report. 5: 62-66.<br />

Guner, N. and T.C. Wehner. 2003. Gene list for watermelon. <strong>Cucurbit</strong> Genetics Cooperative Report.<br />

Gusmini, G. and T.C. Wehner. 2005. Review of inheritance of skin colors in watermelon. HortScience. In<br />

preparation.<br />

Henderson, W.R. 1992. Corrigenda to 1991 watermelon gene list (CGC 14:129-137). <strong>Cucurbit</strong> Genetics<br />

Cooperative Report. 15: 110.<br />

Henderson, W.R., G.H. Scott, and T.C. Wehner. 1989. Inheritance of orange flesh color in watermelon.<br />

<strong>Cucurbit</strong> Genetics Cooperative Report. 12: 59-63.<br />

Henderson, W.R., G.H. Scott, and T.C. Wehner. 1998. Interaction of flesh color genes in watermelon. Journal<br />

of Heredity. 89: 50-53.<br />

Liu, J.S., T.C. Wehner, and S.B. Donaghy. 1997. SASGENE: a SAS computer program for genetic analysis of<br />

gene segregation and linkage. Journal of Heredity. 88: 253-254.<br />

Ostle, B. and L.C. Malone. 1988. Statistics in research. Iowa State University Press, Ames, Iowa.<br />

Poole, C.F. 1944. Genetics of cultivated cucurbits. Journal of Heredity. 35: 122-128.<br />

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