Interaction of flesh color genes in watermelon
Interaction of flesh color genes in watermelon
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DOI：
10.1093/jhered/89.1.50
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发表时间：
1998-01-01
影响因子：
3.1
通讯作者：
Wehner, TC
中科院分区：
文献类型：
--
作者：
Henderson, WR;Scott, GH;Wehner, TC
西瓜[Citrullus lanatus（Thunb.）马特森果肉颜色由几个基因控制，产生红色、橙子、鲑鱼黄、金丝雀黄或白色。这些实验的目的是研究三个独立报告的基因位点的相互作用，每个基因位点有两个或三个等位基因：C（金丝雀黄）与c（红色），y（鲑鱼黄）与Y（红色）与y度（橙子），以及i（对C抑制）与I（对C非抑制）。C，y，y度和i的相互作用是那些开发西瓜新品种的人感兴趣的，以前没有报道过。五个杂交用于研究基因作用：黄色婴儿x嫩甜橙子肉，黄色娃娃x嫩甜橙子肉，黄色婴儿x金色蜂蜜，黄色娃娃x金色蜂蜜，和黄色婴儿x甜公主。基于P-A、P-B、F-1、F-2、BC 1A和BC 1B的表现，亲本具有以下基因型：黄色宝贝= CCYYII，黄色娃娃= CCYYII，嫩甜橙子肉= ccy度y度II，金蜜= ccyyII，和甜公主= ccYYii。分离的五个家庭的后代的肉色支持了以前的报告，在y位点的多个等位基因系列，其中Y（红色）是占主导地位的y度（橙子）和y（鲑鱼黄）。总之，上位性参与西瓜主要果肉颜色的基因，ii抑制CC（金丝雀黄），导致红色的肉，和CC（在ii的情况下）上位性YY，产生金丝雀肉。
Watermelon [Citrullus lanatus (Thunb.) Matsum. & Nakai] flesh color is controlled by several genes to produce red, orange, salmon yellow, canary yellow, or white. The objective of these experiments was to study the interaction of three independently reported gene loci, each having two or three alleles: C (canary yellow) versus c (red), y (salmon yellow) versus Y (red) versus y degrees (orange), and i (inhibitory to C) versus I(noninhibitory to C). The interaction of C, y, y degrees and i is of interest to those developing new cultivars of watermelon and has not been reported previously. Five crosses were used to study gene action: Yellow Baby x Tendersweet Orange Flesh, Yellow Doll x Tendersweet Orange Flesh, Yellow Baby x Golden Honey, Yellow Doll x Golden Honey, and Yellow Baby x Sweet Princess. Based on performance of P-A, P-B, F-1, F-2, BC1A, and BC1B, the parents have the following genotypes: Yellow Baby = CCYYII, Yellow Doll = CCYYII, Tendersweet Orange Flesh = ccy degrees y degrees II, Golden Honey = ccyyII, and Sweet Princess = ccYYii. Segregation of flesh color in the progeny of the five families supported the previous report of a multiple allelic series at the y locus, where Y (red) was dominant to y degrees (orange) and y (salmon yellow). In conclusion, epistasis is involved in the genes for major flesh colors in watermelon, with ii inhibitory to CC (canary yellow), resulting in red flesh, and CC (in the absence of ii) epistatic to YY, producing canary flesh.