発根困難な観賞樹のさし木繁殖 I. クロガネモチ(Ilex rotunda THUNB.)の発根の可能性

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URI http://shark.lib.kagawa-u.ac.jp/kuir/metadata/2498
Title
発根困難な観賞樹のさし木繁殖 I. クロガネモチ(Ilex rotunda THUNB.)の発根の可能性
Title Alternative
Studies on the cuttings of difficult-to-root species in ornamental trees and shrubs. I. Succesfull rooting in softwood cuttings of Ilex rotunda THUNB.
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Description

The rooting ability of cuttings of difficult-to-root species Ilex rotunda THUNB. was studied. Results were as follows: 1. Softwood or semi-softwood cuttings from the male tree pre-treated with NAA solutions at 0, 25 and 50 ppm for two hours were planted in coarse vermiculite in the plastic basket under intermittent mist during the summer in 1975. The cuttings made on May 31 rooted considerably, especially it was true of those untreated with NAA. While most of the cuttings planted in June or later did not root. 2. The cuttings from water sprouts of the male tree rooted more easily than those from normal shoots when they were pre-treated with NAA at 0 and 25 ppm on June 22, 1975. 3. The cuttings from the male tree pre-treated with a concentrated NAA solution (2500ppm in 50 -9.801105e-01thanol) on August 2 and/or August 30, 1975, rooted a 69 and 56 % respectively. On the other hand, those treated with lower levels of NAA rooted not at all. 4. The cuttings from the female tree rooted as same as those from the male when they were treated with the concentrated NAA solution on August 2, 1975.

クロガネモチのさし木発根の可能性を検討し, 以下の結果を得た. 1. 季節的な発根の可能性を調べるため, 1975年5月31日から9月27日にかけて, NAA 0?50ppm処理後ミストざしを行った結果, 5月31日区のNAA対照区では高率で発根し, NAA処理区では30%ていど発根した. しかし, 6月以降にさし木しても, ほとんど発根しなかった. 2. 萌芽枝は普通枝よりもよく発根した. 3. NAA 2500ppmで処理すると, 8月2日あるいは30日にさし木しても, それぞれ69%, 56%の発根率となった. しかし, 低濃度(50ppm以下)のNAA処理では, 全く発根しなかった. 4. 8月2日にNAA高濃度処理後ミストざしすると, 雌株成木からのさし穂も雄株からのさし穂も, ほぼ同様によく発根した.

Author
著者 五井 正憲
著者(ヨミ) ゴイ マサノリ
著者(別表記) Goi Masanori
著者 長谷川 暿
著者(ヨミ) ハセガワ アツシ
著者(別表記) Hasegawa Atsushi
著者 西原 裕
著者(ヨミ) ニシハラ ユタカ
著者(別表記) Nishihara Yutaka
著者 庵原 遜
著者(ヨミ) イハラ ユズル
著者(別表記) IHARA Yuzuru
Publication Title
香川大学農学部学術報告
Volume
29
Issue
2
Start Page
235
End Page
239
Publisher
香川大学農学部
Published Date
197803
ISSN
0368-5128
NCID
AN00038339
Resource Type
Departmental Bulletin Paper
Language
jpn
Text Version
publisher
Set
香川大学
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