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| 上船, 雅義; 仲島, 義貴; 田頭, 栄子; 永井, 一哉; 広瀬, 義躬; 高木, 正見; Uefune, Masayoshi; Nakashima, Yoshitaka; Tagashira, Eiko; Nagai, Kazuya; Hirose, Yoshimi; Takagi, Masami. |
| ヒメジンガサハナカメムシの発育と繁殖に対するミナミキイロアザミウマとカンザワハダニの餌の適合性を明らかにするため,それぞれの餌種を与えた場合の本種幼虫の生存率と発育期間,雌成虫の寿命と産卵数を比較した.ミナミキイロ1齢幼虫や2齢幼虫を与えた場合,本種1齢幼虫は発育できたが,ミナミキイロ雌成虫を与えた場合,ほとんど発育できなかった.一方,カンザワハダニは苦虫だけでなく雌成虫を餌として発育可能で,本種1齢幼虫の好適な餌であった.加齢にともない餌の違いが及ぼす影響は小さくなり,ヒメジンガサハナカメムシ5齢幼虫の生存率と発育期間,雌成虫の寿命と産卵数は,餌の種類の違いによる影響は受けなかった.従って,カンザワハダニもミナミキイロと同様にヒメジンガサの発育や繁殖に対して餌適合性が高いと考えられ,ヒメジンガサはこれら2種の害虫に対する天敵資材としての利用可能性があることが示唆された. Effects of the prey species Thrips palmi and Tetranychus kanzawai and their stages on the development and reproduction of the anthocorid predator, Wollastoniella rotunda, were investigated under laboratory conditions. When offered first or second instar larvae of T. palmi, first instar nymphs of W. rotunda developed into second instars; however, when offered adult T.... |
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Palavras-chave: Wollastoniella rotunda; Thrips palmi; Tetranychus kanzawai; Prey suitability; Biological control. |
| Ano: 2008 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/2585 |
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| Oikawa, Ai; Nagai, Kazuya; Kato, Kiyoaki; Kidou, Shin-ichiro; 加藤, 清明. |
| P23k is a monocot-unique protein that is highly expressed in barley. Our previous loss-of-function studies in barley leaves indicated that P23k, localized to tissues where cell wall polysaccharides accumulate, might contribute to secondary wall formation in the leaf. However, the P23k loss-of-function analysis was limited to the leaf, which is a vegetative organ. Considering the involvement of P23k in secondary wall formation, a dramatically altered phenotype is expected in the stem of P23k gene-silenced barley, where marked secondary wall deposition occurs during the reproductive growth stage. To test this hypothesis, barley striped mosaic virus-based virus-induced gene silencing of P23k was performed. Abnormal tiller formation and arrested intercalary... |
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Palavras-chave: Hordeum vulgare P23k virus-induced gene silencing secondary wall formation (1 3; 1 4)-β-D-glucan tiller intercalary elongation. |
| Ano: 2009 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/2692 |
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| Nakashima, Yoshitaka; Uefune, Masayoshi; Tagashira, Eiko; Maeda, Seiko; Shima, Katsuya; Nagai, Kazuya; Hirose, Yoshimi; Takagi, Masami. |
| Cage trials of an anthocorid predator, Wollastoniella rotunda Yasunaga et Miyamoto, as a biological control agent of Thrips palmi Karny were conducted in Fukuoka, Japan, under winter greenhouse production conditions. Females of W. rotunda were released on caged eggplants, and placed in two greenhouses on 27 October. The development, population growth, and effectiveness of W. rotunda were observed until early March. Results from the cage trials showed that W. rotunda successfully developed, reproduced, and suppressed T. palmi populations under the conditions found in winter greenhouses. During the experiment, one full generation and a second generation of adult predators occurred. The T. palmi population which was exposed to predators remained at a low... |
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Palavras-chave: Reproductive diapause; Photoperiod; Development; Winter; Wollastoniella rotunda; Orius; Biological control; Thrips palmi; Solanum melongena; Dicyphus tamaninii; Frankliniella occidentalis; Piocoris varius. |
| Ano: 2004 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/808 |
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