早生温州ミカンの薬剤摘果に関する研究 : II. α-ナフタレン酢酸(NAA)散布による摘果効果と果実の形質との関係   :   Chemical Thinning in Early Satsuma Orange : II. Fruit Thinning by NAA Sprays in Relation to the Size and Quality of Harvested Fruits 

作成者 永沢, 勝雄, 大野, 正夫, 野間, 豊, 大場, 陸司
作成者 (ヨミ) オオバ, リクシ
作成者の別表記 NAGASAWA, Katsuo, OHNO, Masao, NOMA, Yutaka, OHBA, Rikushi
日本十進分類法 (NDC) 620
内容 1.1966, 1967両年度において, 早生温州ミカンの結果母枝の発育程度とNAA散布による落果助長効果との関係, 側枝の着果にあたえる影響を調査し, なお, NAA散布が収穫果実の形質におよぼす影響について調査した.2.NAA散布濃度は300, 150ppmの2種類とし, 花弁脱落期(満開5日後)ならびに幼果期(満開40日後)に散布した.一般に濃度の高い方が落果を助長した.3.NAA散布による落果助長効果は1966年では, 幼果期散布区, 1967年では, 花弁脱落期散布区に顕著で, 年によって様相を異にした.4.NAA散布が果実の形質にあたえる影響については, 1966, 1967の両年とも, いづれのNAA散布区においても一果平均重が大きく, 大果歩合が高くなった.その原因としては, 落果助長にもとずく, 一果当り葉面積の増大によるほか, NAAそのものに残存果実の肥大を助長する作用があるのではないかと考えられた.
Chemical Thinning in Early Satsuma Orange. II. Fruit Thinning by NAA Sprays in Relation to the Size and Quality of Harvested Fruits. K. NAGASAWA, M. OHNO, Y. NOMA and R. OHBA Faculty of Horticulture, Chiba University, Matsudo, Japan. Tech. Bull. Fac. Hort. Chiba Univ., No.16: 1〜8, 1968 Naphthaleneacetic Acid (NAA) sprays were applied to fairly-vigorous Early Satsuma orange trees during the crop seasons 1966 and 1967. Spray concentrations of 150 and 300 ppm were used at two stages of fruit development: Petal fall stage (5 days after full bloom) and early stage of fruit development (40 days after full bloom). In 1966, trees sprayed at the time when fruits were at the early stage of development, showed a markedly highier increased fruit drop following treatment than trees sprayed at petal fall stage. However, a reverse trend was observed during the crop season 1967. That is, fruit drop following treatment was highest on trees sprayed at petal fall stage than trees sprayed 30 days after full bloom. Increased fruit drop following each spray application resulted in all treated trees. At harvest time, an increase fruit size was noted on all NAA treated trees, and was related to fruit thinning. Color and shape of harvested fruits were normal on all treated trees.

公開者 千葉大学園芸学部
コンテンツの種類 紀要論文 Departmental Bulletin Paper
DCMI資源タイプ text
ファイル形式 application/pdf
ISSN 0069-3227
NCID AN00142658
掲載誌情報 千葉大学園芸学部学術報告 Vol.16 page.1-8 (19681231)
情報源 The technical bulletin of Faculty of Horticulture, Chiba University
言語 日本語
著者版フラグ publisher

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