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No.31 (1984/11) >

Title :熱帯有用樹の導入・育成に関する研究 : 第 2 報巨大ギンネムの発芽及びさし木試験(附属熱帯農学研究施設)
Title alternative :Studies on the adaptability test of the tropical trees in Iriomote Island (II). On the germination and cutting tests of Giant Ipil-ipil (Research Institute of Tropical Agriculture)
Authors :新本, 光孝
石垣, 長健
米盛, 重友
山盛, 直
Authors alternative :Aramoto, Mitsunori
Ishigaki, Choken
Yonemori, Shigetomo
Yamamori, Naoshi
Issue Date :19-Nov-1984
Abstract :本研究は, 巨大ギンネムの実生及びさし木による繁殖を向上させるためにおこなったものである。本実験では種子の発芽試験をおこない, さらにさし穂のさしつけ用土別, 薬剤処理別, 径級別の発根の比較をこころみた。実験の結果を要約すると次のとおりである。1.巨大ギンネムの種子は, 長径, 短径, 重量ともに在来種よりも大きく, それぞれ1.3,1.5,1.8倍であった。2.発芽に対する最適温度及び温水処理はそれぞれ35℃, 70℃で, その発芽率は80%であった。3.用土別の発根率は, バーミキュライトは海砂及び鹿沼土よりもよかった。4.薬剤処理の発根は無処理よりもよく, とくにメネデール50倍がよかった。5.径級別の発根は1.0∿1.5cm級が他の径級よりもよく, その発根率は約70%であった。
The present study was done for the purpose of promoting vegetative propagation by seedling and cutting of the Giant Ipil-ipil (K28). In this report, the authors tried a germination test of seed and made a comparison of rootings among used soils (Vermiculite, Sea sand and Kanumado), treatments of chemicals, and diameter class, of the cutting. The results of the study are summarized as follows : 1. Maior axis, minor axis and weight (per 100 grains) of the K28 seeds were lager 1.2 times, 1.5 times and 1.8 times than local seeds, respectively. 2. The optimum temperature and hot water temperature for germination were 35℃ and 70℃, respectively, and the percentage of germination was 80%. 3. On the rootings by used soils, Vermiculite gave better effect than Sea sand and Kanumado. 4. The rooting of the cuttings for treatments with chemical gave better effect than the control. the rooting percentage of the cuttings for treatment with diluted solution 50 times of Menedael gave better effect than the other one. 5. On the rootings by the diameter class, rootings of 1.0-1.5cm class gave better among the others, and its rooting percentage was about 70%.
Type Local :紀要論文
ISSN :0370-4246
Publisher :琉球大学農学部
URI :http://hdl.handle.net/20.500.12000/3982
Citation :琉球大学農学部学術報告 = The Science Bulletin of the Faculty of Agriculture. University of the Ryukyus no.31 p.279 -285
Appears in Collections:No.31 (1984/11)

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