カキの落果に関する生理学的研究 : II.平核無の生理的落果におよぼすしゃ光および環状剥皮の影響   :   Physiological Studies on Fruit Drop of Diospyros Kaki L. : II. Effects of Shading and Ringing on Physiological Dropping of Hiratanenashi Cultivar During June Drop Period. 

作成者 高橋, 英吉, 井上, 祐吉, 永沢, 勝雄
作成者 (ヨミ) タカハシ, エイキチ, イノウエ, ユウキチ
作成者の別表記 TAKAHASHI, Eikichi, INOUE, Yukichi, NAGASAWA, Katsuo
日本十進分類法 (NDC) 620
内容 1.カキ平核無の生理的落果に対する, しゃ光及び環状剥皮処理の影響を調査するため1968年および1969年に試験を行なった.2.1968年および1969年の第2次生理的落果のピークは, それぞれ7月7日および7月5日に現われた.3.アルミニウムを塗布したビニールフィルムによるしゃ光処理は, 落果を著しく促進し, 落果のピークは6月28日に認められ, 対照無処理区にくらべ9日早かった.4.1969年の生理的落果期間中の異なる時期に5日間のしゃ光処理を行なった結果, 各々の処理時期ともしゃ光により落果は増加した, しかし, 落果のピークの出現は早くならなかった.この相違は1968年と1969年の日照量の差異によるものであろう.5.生理的落果終了後のアルミフォイルによる完全しゃ光および, 果実着果部位の上下の環状剥皮による栄養しゃ断は, いずれも落果を促進させた.処理区の果実が50%落果するのは, 環状剥皮による栄養しゃ断区が早かったが, 全果が落果するのは, しゃ光区が早かった.これらのことから平核無の生理的落果は果実中の炭水化物含量だけでなく内生的ホルモンバランスにも起因するものと考えられる.
Physiological Studies on Fruit Drop of Diospyros kaki L. II. Effects of Shading and Ringing on Physiological Dropping of Hiratanenashi Cultivar During June Drop Period. E. TAKAHASHI, Y. INOUE and K. NAGASAWA. Faculty of Horticulture, Chiba University, Matsudo, Japan. Tech. Bull. Fac. Hort. Chiba Univ., No. 19 : 13-21, 1971. The effects of shading of fruits including leaves and branches by different covering materials, time of shading and ringing together with shading on the physiological fruit drop in Diospyros kaki L. (cv. Hiratanenashi) were studied in 1968 and 1969. In the experimental years, the second peak of fruit drop in normal trees occurred on July 7 in 1968 and July 5 in 1969. Shading with aluminum corted vinyl film at the time of June drop accelerated fruit drop, occurring from June 25 to July 2 in 1968, the peak observed on June 28 being accelerated 9 days as compared with that of natural fruit drop on July 7. The shading by black polyethylene film at 5 different times during the period of June drop in 1969 increased the percentage of fruit drop. However, the time of drop peak in any of the shading treatment was not accelerated, the reason for this discrepancy between years might be due to the difference in the amounts of sunshine in 1968 and 1969. In 1969, the effects of the shading with aluminum foil combined with ringing below the fruits on the bearing shoots, ringing above and below the fruits without shading and without shading and ringing on the fruit drop were compared in order to know the role of carbohydrates in fruit drop. In this experiment, the 50 0ropping occurred in order of plots of ringing without shading, shading with ringing, and without shadding and ringing. It is interesting to note that dropping in the shading with ringing plot started later and ended earier than that in the ringing without shading plot. It may be suggested from these experiments and other experiments now underway that the physiological dropping or fruit abscission in cultivar 'Hiratanenashi' would be attributed

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.19 page.13-21 (19711231)
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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