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Tsunaki Nukaya,Masaki Yahata,Kensaku Suzuki,Kiichi Yasuda,Hisato Kunitake,Haruki Komatsu,Hiroo Mukai,Hisashi Harada,Toshihiko Takagi 한국원예학회 2009 Horticulture, Environment, and Biotechnology Vol.50 No.3
Autotetraploidy (2n=4X=36) five lines of Meiwa kumquat (Fortunella crassifolia Swingle, 2n=2X=18), which had been induced by treating the nucellar embryos with colchicines, were selected and investigated to determine the fruit characteristics. The fruit weight of tetraploid plants was heavier than that of diploid plants. The percentage of pericarp weight per fruit in tetraploid plants increased significantly compared to that of diploid plants. The sugar content in pericarp of tetraploid plants was significantly higher than that of diploid plants. The organic acid content of tetraploid plants was almost equal to that of diploid plants. Thus, it can be concluded that tetraploidy enhanced desirable traits such as larger fruit size with thicker pericarp and high sugar content in Meiwa kumquat.