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  1. 紀要論文
  2. 琉球大学農学部学術報告
  3. 34号
  1. 部局別インデックス
  2. 農学部

イタジイ林の更新 : 2. イタジイ種子の発芽に及ぼす温度と貯蔵の影響(附属演習林)

http://hdl.handle.net/20.500.12000/3917
http://hdl.handle.net/20.500.12000/3917
eb6db06f-6dee-4419-bc4b-df8817d17c6c
名前 / ファイル ライセンス アクション
KJ00000162292.pdf KJ00000162292.pdf
Item type デフォルトアイテムタイプ(フル)(1)
公開日 2008-02-14
タイトル
タイトル イタジイ林の更新 : 2. イタジイ種子の発芽に及ぼす温度と貯蔵の影響(附属演習林)
言語 ja
作成者 新里, 孝和

× 新里, 孝和

ja 新里, 孝和

宮城, 繁夫

× 宮城, 繁夫

ja 宮城, 繁夫

田場, 和雄

× 田場, 和雄

ja 田場, 和雄

平田, 永二

× 平田, 永二

ja 平田, 永二

山盛, 直

× 山盛, 直

ja 山盛, 直

Shinzato, Takakazu

× Shinzato, Takakazu

en Shinzato, Takakazu

Miyagi, Shigeo

× Miyagi, Shigeo

en Miyagi, Shigeo

Taba, Kazuo

× Taba, Kazuo

en Taba, Kazuo

Hirata, Eiji

× Hirata, Eiji

en Hirata, Eiji

Yamamori, Naoshi

× Yamamori, Naoshi

en Yamamori, Naoshi

アクセス権
アクセス権 open access
アクセス権URI http://purl.org/coar/access_right/c_abf2
内容記述
内容記述タイプ Other
内容記述 イタジイ種子の発芽については, 苗木増殖に関していくつかの報告がある。ここでは天然更新の面から, 発芽に及ぼす温度や発芽床, 貯蔵について実験を行なった。1. 発芽の最適温度は23∿25℃で, それ以下では発芽勢が弱くゆっくり発芽し, またそれ以上の温度では急速に発芽する傾向がみられた。2. 変温による発芽促進の効果は明らかでなかった。3. 発芽床は口紙をしいただけのものよりバーミキューライトと川砂での発芽率が著しく高かった。しかし口紙発芽床でも置床した種子の上に口紙をのせると発芽率は増大した。4. 風乾貯蔵は発芽の低下が著しく, 土中埋蔵は貯蔵中に発芽する種子が多かった。5. 5∿10℃の低温貯蔵は貯蔵期間の長さに伴って発芽種子が増大する傾向にあるが, 未発芽種子の保生は良好であった。6. 温度, 貯蔵, 発芽床からイタジイ種子の性質について考察し, 自然条件下におけるイタジイ種子の消長は毎年短期間にくり返されるのではないかとした。
内容記述タイプ Other
内容記述 It has been reported that Castanopsis sieboldii seeds are directry sown after harvesting to produce nursery stock. The present paper reports some experimental results about the effect of temperature and seedbed on germination and longevity of the C. sieboldii seeds. When the seeds of C. sieboldii were placed on filter paper in the petri dishes as a seedbed and kept at constant temperature of 23℃ and 25℃, the germination was 41 and 44% at the 12th week, respectively. The vigor of germination was rather weak at 10℃ and 15℃. The germination of the seeds was comparatively rapid in early weeks but became stagnant with the lapse of time at the temperature from 30℃ to 40℃. Diurnal temperature flactuations did not show any effect on the germination of the C. sieboldii seeds. The degree of germination was affected by the kind of the seedbed. The C.sieboldii seeds showed better germination in vermiculite and river sands than on the filter paper, and no significant difference was observed in the degree of germination among the seedbeds of vermiculite and river sands. However, the germination of the seeds was improved to 78% when the seeds were placed on two sheets of filter paper and covered with a sheet of filter paper. The seeds of C.sieboldii were found to lose their viability within 30 days after collection when stored in the open laboratory, but found to keep viability to germinate up to 160 days when kept buried underground at 10cm depth. During the bury storage the seeds occurred to germinate one third and near 100% at the 80th and 100th day of storage, respectively. The germination also took place gradually when the seeds were stored at 5℃ and 10℃ in a moist container. The non-germinating seeds in the moist container with the low temperature exhibited viability on the 75th day when tested in the germination chamber. From the ecological point of view, the results obtained here are suggestive of a phase of regenerating pattern of C. sieboldii, namely the seeds which happen to be buried in the Ao horizon of the forest floor after falling from mother trees in the middle October to the end of November likely keep better germination viability during the winter season of 5℃ to 10℃ and start full emergence as the season becomes warmer. In other words the C. sieboldii seeds on the forest floor may not be kept dormant until the following fall.
内容記述タイプ Other
内容記述 紀要論文
出版者
言語 ja
出版者 琉球大学農学部
言語
言語 jpn
資源タイプ
資源タイプ departmental bulletin paper
資源タイプ識別子 http://purl.org/coar/resource_type/c_6501
出版タイプ
出版タイプ VoR
出版タイプResource http://purl.org/coar/version/c_970fb48d4fbd8a85
識別子
識別子 http://hdl.handle.net/20.500.12000/3917
識別子タイプ HDL
収録物識別子
収録物識別子タイプ ISSN
収録物識別子 0370-4246
収録物識別子タイプ NCID
収録物識別子 AN00250548
収録物名
言語 ja
収録物名 琉球大学農学部学術報告
書誌情報
号 34, p. 199-208, 発行日 1987-12-05
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