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Journal of Heredity Advance Access published online on February 17, 2006
Journal of Heredity, doi:10.1093/jhered/esj023
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© The American Genetic Association. 2006. All rights reserved. For permissions, please email: journals.permissions@oxfordjournals.org.
Received April 11, 2005
Accepted December 21, 2005

Article

Qualitative Inheritance of Rind Pattern and Flesh Color in Watermelon

Gabriele Gusmini 1 and Todd C. Wehner 1 *

1 From the Department of Horticultural Science, North Carolina State University, Raleigh, NC 27695-7609

* To whom correspondence should be addressed.
Todd C. Wehner, E-mail: todd_wehner{at}ncsu.edu


  Abstract

Watermelon [Citrullus lanatus (Thunb.) Matsum. & Nakai var. lanatus] is a diverse species, with fruits of different sizes, shapes, rind patterns, and flesh colors. This study measured the inheritance of novel rind phenotypes and verified the genetics of white, red, salmon yellow, and canary yellow flesh colors. For each of the 11 crosses, six generations (PaS1, PbS1, F1, F2, BC1Pa, and BC1Pb) were produced to form 11 families. Three new genes were identified and designated as follows: Scr for the scarlet red flesh color of ‘Dixielee’ and ‘Red-N-Sweet’, Yb for the yellow belly (ground spot) of ‘Black Diamond Yellow Belly’, and ins for the intermittent stripes of ‘Navajo Sweet’. The inheritance of the C gene for the canary yellow flesh color was verified as single dominant, and a new inbred type line was developed possessing that gene. Aberrations in the segregation of red, white, and salmon yellow flesh colors were recorded, raising questions on the inheritance of these traits. Finally, the spotted phenotype from ‘Moon and Stars’ was combined with light green and gray rind patterns for the development of novel cultivars with distinctive rind patterns.


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