りんご主要品種の花芽分化期に就て

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書誌事項

タイトル別名
  • On the time of flower-bud differentiation of the major varieties of apple
  • りんご主要品種の花芽分化期の就て
  • リンゴシュヨウ ヒンシュ ノ カガ ブンカキ ノ シュウテ

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説明

(1) In the both year of 1947 and 1948, the period and proeress of the fruit bud formation of the 11 leading apple varieties were researched for the duration from late June to late August in the Aomori Apple Experiment Station.<br> (2) The varieties which form their flower parts in the bud in earlier petiod are the Yellow Transparent, Early McIntosh, Mclntosn Red, Indo and American Summer Pearmain. The Golden Delicious, Ralls Janet and nTewton Pippin follow them, and the Delicious, Winesap and Jonathan are the latest in the period of fruit bud formation<br> (3) Each variety has its own period of bud formation, and is various in the velocity of its progress. Moreover, it seems that the velocity of its progress is not always fast because of the variety with which the beginninz of differentiation is earlier. Therefore, the period and progress of fruit bud formation of the varieties is peculiary themselves.<br> (4) In 1948, the period of fruit bud formation was earlier about 5 to 10 days than those in 1947. It appears to be affected wich high temperature, much sunshine and drying in June in 1948.<br> (5) In Aomori Prefecture, the relationship between the period of bud formation and the maximum temperature through all the year is not _??_ecognized.<br> (6) With the earliest maturing varieties, flower parts seem normally to be formed in the bud in early period, but, as to the middle and late maturing varieties, there is no confirmed relationship between the ripening season and the period of fruit bud formation.<br> (7) Excepting the Mclntosh Red and Newtown Pippin apple out of 11 varieties, there is a strong tendency that the stronger the alternate bearing character of varieties is, the earlier is the period of fruit bud formation.<br> (8) The terminal bud on about 30cm long fruiting twig is later about 20 to 30 days in the period of fruit bud formation, compared with those on spurs.

収録刊行物

  • 園芸学会雑誌

    園芸学会雑誌 19 (2), 125-133, 1950

    一般社団法人　園芸学会

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