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Genetic Analysis of Seed Size in Watermelon  

Kim, Yong-Jae (NH Seed Research & Development Center)
Yang, Tae-Jin (Dept. of Plant Sciences, Plant Genomics and Breeding Institute, and Research Institute for Agriculture and Life Sciences, College of Agriculture and Life Sciences, Seoul National University)
Park, Young-Hoon (Dept. of Horticultural Bioscience, College of Natural Resources and Life Science, Pusan National University)
Lee, Yong-Jik (Hana Seed co.)
Kang, Sun-Cheol (NH Seed Research & Development Center)
Kim, Yong-Kwon (NH Seed Research & Development Center)
Cho, Jeoung-Lai (Dept. of Horticulture, Division of Applied Life Science, Gyeongsang National University)
Publication Information
Korean Journal of Breeding Science / v.41, no.4, 2009 , pp. 412-419 More about this Journal
Abstract
In order to study the inheritance of watermelon seed size, we used six watermelon lines of different seed sizes as parental lines. Six lines include three accessions, 'PI525088' with giant seed (GS), 'Charleston Gray' with big seed (BS), and 'NT' with normal medium size seed (NS), and three near isogenic lines, 'NTss' with small seed (SS), 'NTms' with micro seed (MS) and 'NTts' with tomato seed size (TS) bred by crosses between accession 'NT' of normal seed size and accession 'TDR' of the smallest seed size,. We inspected $F_1$, $F_2$, $BC_1F_1$ (P1), $BC_1F_1$ (P2) populations from the crosses between the adjacent seed size materials like $GS{\times}BS$, $BS{\times}NS$, $NS{\times}SS$, and $MS{\times}TS$, and two crosses between parental lines showing relatively big difference in seed size such as $GS{\times}TS$ and $NS{\times}TS$. Partial single dominant inheritance patterns were observed between $GS{\times}BS$, $NS{\times}SS$, and $MS{\times}TS$ and inheritance patterns based on two genes or more than two genes were speculated between $BS{\times}NS$. A very wide segregation range was observed from the population of $GS{\times}TS$ indicating many quantitative genes involved in the seed sizes. Overall, we speculated that more than six genes are involved in between the biggest and smallest seed size watermelon and three major genes between the normal seed size and the smallest seed size watermelon.
Keywords
Citrullus lanatus; seed size; inheritance;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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