トマト果実の肥大の機械的な抑制が糖濃度に及ぼす影響

DOI NDLデジタルコレクション 日本農学文献記事索引 Web Site Web Site 被引用文献6件 参考文献17件

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タイトル別名
  • Effect of Mechanically Restricting Tomato Fruit Enlargement on the Partitioning of Soluble Sugars.

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Tomato fruits of '81L1204-2' and 'Brehem's Solid Red' (30-35 mm diam.) were enclosed within acrylic sleeves to restrict the enlargement mechanically 14 days after anthesis (DAA) to investigate the effect of the rate of water accumulation on the concentration of carbohydrates. The treatment reduced fruit fresh and dry weights by 27-43% and 36-51%, respectively, of untreated fruit on a per fruit basis 35 DAA. Concomitant reduction of fruit dry weight by the treatment indicates that imports of water and dry matter are closely associated, whereas the increased percentage of dry matter suggests that their accumulations fluctuated independently. Both treated and untreated fruits contained mainly fructose and glucose while the concentration of sucrose was very small or undetectable. Hexose (fructose+glucose) concentration was higher in growth-restricted fruits than in unrestricted fruits in 'Brehem's Solid Red' ; but not significantly different in '81L1204-2'. When similar fruits were enclosed 14 DAA in acrylic sleeves and the space between the sleeve wall and the fruit surface was filled with glass beads, to see short time effect of growth restriction, fruit enlargement was restricted immediately after the setting. The percentage of dry matter showed no apparent increase within 5 days of the treatment, while hexose concentration increased significantly at first then the increase ceased ; it remained constant in untreated fruits. Since the changes in soluble sugar concentration were inconsistent with changes in dry matter percentage, preferential partitioning of imported carbohydrates into soluble sugars but not into other carbohydrates seemed to be involved in the increase of soluble sugars under growth-restriction.

収録刊行物

  • 園芸学会雑誌

    園芸学会雑誌 71 (4), 480-484, 2002

    一般社団法人　園芸学会

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