開花期前後の温度環境が甘果オウトウ'佐藤錦'の花器の発育と結実に及ぼす影響

DOI 日本農学文献記事索引 Web Site Web Site 被引用文献8件 参考文献14件

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タイトル別名
  • Effects of Temperature on Flower Development and Fruit Set of 'Satohnishiki' Sweet Cherry
  • カイカキ ゼンゴ ノ オンド カンキョウ ガ カンカ オウトウ サトウニシキ

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Effects of temperature on flower development and fruit set of 'Satohnishiki' sweet cherry were studied.<BR>1. Trees were grown in sunlit growth chambers controlled at 10, 15, 20, and 25°C during the day and grown under field condition at night (average minimum temperature during treatment was 7.7°C) from one month before anthesis to petal fall. The high temperature hastened blooming but markedly reduced flower size. When flowers were hand-pollinated with pollen of 'Takasago', the fruit set at 10, 15, 20, and 25°C were 36, 50, 29, and 2%, respectively.<BR>2. In another experiment, the anatomical characteristics of flowers were compared between the trees grown in low temperature regime; 10 to 15°C during the day/natural temperature at night (average minimum temperature during treatment was 5.4°C) and those grown in high temperature regime ; 20 to 25°C during the day/10 to 15°C at night from one month before anthesis to petal fall. High temperature suppressed ovary growth and induced small ovules and nucelli. At anthesis, most of the embryo sacs were still immature in both temperature regimes. At high temperature, the nucelli and embryo sacs degenerated rapidly thereafter. At low temperature, the embryo sac development continued so that 48% of the embryo sacs reached the eight-nucleate stage two days after anthesis.<BR>These results reveal that the rapid degeneration of embryo sac and nucellus is a major reason for the reduction in fruit set when the developing buds are exposed to high temperatures.

収録刊行物

  • 園芸学会雑誌

    園芸学会雑誌 65 (4), 707-712, 1997

    一般社団法人　園芸学会

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