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发布日期:2016/11/24 15:38:29 浏览次数: 来源:中国无籽西瓜网  


高 磊,赵胜杰,路绪强,何 楠,朱红菊,豆峻岭,张莉,刘文革

(中国农业科学院郑州果树研究所,郑州 450009



The genotype analysis of watermelon about sour flesh

in the BC7F1 population

GAO LeiZHAO Sheng-jieLU Xu-qiangHE NanZHU Hong-juDOU Jun-lingLIU Wen-ge

(Zhengzhou Fruit Research Institute, Chinese Academy of Agricultural Sciences, Zhengzhou 450009)

Abstract: Composition and content level of organic acids are key factors to the fruit quality of watermelon, and play an important part in nutrition quality and metabolism. In this study, the BC7F1 population was constructed using PI271769 (known to have different characters compared to the recurrent parent) as a donor parent, and the elite watermelon cultivar 203Z as the recurrent parent, and we found that some watermelon of BC7F1 population have sour flesh. The genotype of watermelon about sour flesh was analyzed by simple sequence repeat (SSR) markers and Graphical Geno Types(GGT), there were 2-4 exogenous segments derived from the donor parent, which were predicted may associated with key genes of organic acids synthetic. These results provide good experiment materials for fine mapping and map-based cloning of key genes associated with organic acids synthetic, and enrich germplasm resources of watermelon, which contributes to breeding new variety of watermelon about sour and sweet taste.

Key words: watermelon; sour flesh; SSR marker; genotype analysis