Gusmini Gabriele, Wehner Todd C
Department of Horticultural Science, North Carolina State University, Raleigh, NC 27695-7609, USA.
J Hered. 2006 Mar-Apr;97(2):177-85. doi: 10.1093/jhered/esj023. Epub 2006 Feb 17.
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 (P(a)S1, P(b)S1, F1, F2, BC1P(a), and BC1P(b)) 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.
西瓜[西瓜（Citrullus lanatus (Thunb.) Matsum. & Nakai var. lanatus）]是一个具有多样性的物种，其果实大小、形状、果皮花纹和果肉颜色各异。本研究测定了新型果皮表型的遗传情况，并验证了白色、红色、橙黄色和金丝雀黄色果肉颜色的遗传特性。对于11个杂交组合中的每一个，都产生了六个世代（P(a)S1、P(b)S1、F1、F2、BC1P(a)和BC1P(b)）以形成11个家系。鉴定出三个新基因并命名如下：Dixielee和Red-N-Sweet的猩红色果肉颜色的Scr基因、黑钻石黄腹（地面斑点）的黄腹（地面斑点）的Yb基因以及纳瓦霍甜西瓜的间断条纹的ins基因。金丝雀黄色果肉颜色的C基因的遗传被验证为单显性，并培育出了携带该基因的新型自交系。记录了红色、白色和橙黄色果肉颜色分离中的异常情况，引发了对这些性状遗传的疑问。最后，将月亮星星西瓜的斑点表型与浅绿色和灰色果皮花纹相结合，以培育具有独特果皮花纹的新型品种。
