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Registros recuperados: 30
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Biological control of Verticillium black spot of Japanese radish using Bacillus spp. and genotypic differentiation of selected antifungal Bacillus strains with antibiotic marker OAK
Kawai, Ayako; Kusunoki, Kaori; Aiuchi, Daigo; Koike, Masanori; Tani, Masayuki; Kuramochi, Katsuhisa; 川井, 彩子; 楠木, 芳; 相内, 大吾; 小池, 正徳; 谷, 昌幸; 倉持, 勝久.
Bacillus species can form endospores and have broad-spectrum activity of their antibiotics. For that reason, they offer several advantages over other bacteria for protection against root pathogens. This work was intended to determine the ability of Bacillus spp. to inhibit Verticillium dahliae. First, antagonistic activities of Bacillus spp. were studied in greenhouse trials. These results suggest that the bacterium can control soil-borne diseases. Secondly, to investigate the situation in a culture environment, Bacillus spp. were examined for their activity to control Verticillium black spot of Japanese radish and plant-growth promotion rhizobacteria (PGPR) effects in a field. After 2 months, these bacteria reduced Verticillium black spot of Japanese...
Palavras-chave: Bacillus spp.; Biological control; Verticillium black spot of Japanese radish; Verticillium dahliae.
Ano: 2006 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/97
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Blood meal size of the horn fly, Haematobia irritans(L.), estimated by measuring the feeding time. OAK
倉持, 勝久; 堀, 浩二; Kuramochi, Katsuhisa; Hori, Koji.
Ano: 1984 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/2176
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Effects of several different food plants on nymphal development of palomena angulosa MOTSCHULSKY(Hemiptera : pentatomidae) OAK
Hori, Koji; Kuramochi, Katsuhisa; Nakabayashi, Shigehiro; 堀, 浩二; 中林, 成広; 倉持, 勝久.
Ano: 1985 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/1466
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Low-molecular-weight aliphatic carboxylic acids in soils incubated with decomposing forest litter OAK
Tani, Masayuki; Koike, Masanori; Kuramochi, Katsuhisa; Higashi, Teruo; 谷, 昌幸; 小池, 正徳; 倉持, 勝久; 東, 照雄.
The effects of the addition of decomposing forest litter, collected from Podzolic soil organic layers (Oi, Oe and Oa) and Brown Forest soil Oe layers, on the amounts and composition of low molecular weight aliphatic carboxylic acids (LACAs) in soils were investigated by incubation experiments for 4 weeks. The total amounts of LACAs were greater at the beginning of incubation (384 to 1155 μmol kg-1), but decreased abruptly after 1 week, becoming relatively stable for a period of 1 to 4 weeks (299 to 377 μmol kg-1). The average amounts (without 0 weeks) of LACAs, especially acetic acid and citric acid, in soils incubated with forest litter under moderately moist conditions, were smaller than in the blank soil. Larger amounts of LACAs, especially formic acid,...
Palavras-chave: Decomposing forest litter; Forest soils; Incubation experiment; Low-molecular-weight aliphatic carboxylicacid (LACA); Soil microflora.
Ano: 2006 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/98
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Pathogenicity and its mode of action in different sedentary stages of Heterodera glycines (Tylenchida: Heteroderidae) by Verticillium lecanii hybrid strains OAK
SHINYA, Ryoji; AIUCHI, Daigo; KUSHIDA, Atsuhiko; TANI, Masayuki; KURAMOCHI, Katsuhisa; KOIKE, Masanori; 相内, 大吾; 谷, 昌幸; 倉持, 勝久; 小池, 正徳.
The current study was conducted to investigate the pathogenicity and its mode of action by Verticillium lecanii hybrid strains in different sedentary stages of Heterodera glycines. Three different sedentary stages (pale yellow female, yellow brown cyst, and dark brown cyst) of H. glycines were treated with V. lecanii and incubated for 3 weeks on water agar. After 3 weeks of incubation, eggs were investigated for the following parameters: (i) the infection frequencies of eggs, (ii) the number of eggs laid, and (iii) the number of mature and healthy eggs. Subsequently, the fecundity of H. glycines treated with V. lecanii was investigated in greater detail. Consequently, some strains had a greater ability to infect eggs and this significantly reduced the...
Palavras-chave: Soybean cyst nematode; Protoplast fusion; Fecundity; Egg laying; Biological control.
Ano: 2008 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/2849
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Preliminary investigation on ovipositional and food selection of palomena angulosa MOTSCHULSKY (Hemiptera : Pentatomidae) in the laboratory OAK
Hori, Koji; Ohta, Hiroko; Kuramochi, Katsuhisa; 堀, 浩二; 太田, 浩子; 倉持, 勝久.
Ano: 1985 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/1467
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Rearing method of horn fly larvae with freeze-dried bovine dung(Diptera:muscidae) OAK
Kuramochi, Katsuhisa; 倉持, 勝久.
Ano: 1985 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/1474
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Reclassification of Japanese Isolates of Verticillium lecanii to Lecanicillium spp OAK
小池, 正徳; 杉本, みどり; 相内, 大吾; 長尾, 英幸; 新谷, 良治; 谷, 昌幸; 倉持, 勝久.
Recently, Verticillium lecanii was transferred and subdivided into mainly Lecanicillium lecanii, L. muscarium, and L. longisporum according to morphological observations and PCR-RFLPs of ITS, mtDNA and β-tubulin. To clarify whether 65 isolates of V. lecanii of mainly Japanese isolates were identified as Lecanicillium spp., conidia size and the formation of secondary phialide formation were investigated under a light microscope, and DNA polymorphism in the j8-tubulin gene of V. lecanii was analyzed by PCR-RFLP. These results indicated that the examined isolates belonged to L. muscarium (60 isolates) and L. longisporum (4 isolates), except for one isolate which alone did not belong to both Lecanicillium spp.
Palavras-chave: Conidia size; Lecanicillium spp.; Secondaryphialide formation; Verticillium lecanii.
Ano: 2007 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/2534
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Roll of dung beetles and other insects in decomposing cow dung in grazing pastures OAK
Kuramochi, Katsuhisa; 倉持, 勝久.
2004年8月5日とかちプラザで開催、日本ユネスコ国内委員会主催の帯広農村開発教育国際セミナー(OASERD)国際連合ユネスコアジア太平洋地域教育開発計画事業(APEID)シンポジウム「地球にやさしい農業をめざして : 家畜ふん尿,資源としての有効利用」講演資料
Palavras-chave: Cow dung; Dung beetles; Onthophagous; Grazing pasture.
Ano: 2004 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/1901
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Screening of Verticillium lecanii (Lecanicillium spp.) Hybrid Strains Based on Evaluation of Pathogenicity against Cotton Aphid and Greenhouse Whitefly, and Viability on the Leaf Surface OAK
相内, 大吾; 馬場, ゆき子; 稲見, 圭吾; 新屋, 良治; 谷, 昌幸; 倉持, 勝久; 堀江, 早弥佳; 小池, 正徳.
In a previous study, protoplast fusion was performed among 3 strains of the entomopathogenic fungi Verticillium lecanii, as a result of which 174 hybrid strains were obtained. The aim of the present study was to screen desirable hybrid strains that have a wide host range or durable effects. Initially, 43 hybrid strains were used in bioassays against the cotton aphid. Of these strains, 30 induced equal or higher mortality as compared to Vertalec (41.9%). Secondly, 50 hybrid strains were used in bioassays against the greenhouse whitefly. Of these strains, 37 exhibited an equal or higher infection rate as compared to that of Mycotal (36.2%). Finally, 50 hybrid strains were applied to cucumber leaves in order to test strain viability under low humidity...
Palavras-chave: Biological control; Lecanicillium spp; Protoplast fusion; Screening; Verticillium lecanii.
Ano: 2007 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/2587
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アブラムシ類の生物的防除を目指して~昆虫類利用の可能性~ OAK
倉持, 勝久; 鈴木, 央夏.
Palavras-chave: 生物的防除; アブラムシ; ナナホシテントウ.
Ano: 2003 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/840
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サシバエ類の吸血行動に関する研究,とくに吸血量と腸内プロテアーゼ活性との関連について OAK
倉持, 勝久.
Ano: 1984 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/392
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スズメバチ類の生活戦略から学ぶもの : スズメバチにもプロポリスがある! OAK
倉持, 勝久.
Palavras-chave: スズメバチ類; プロポリス; 昆虫機能物質; 民間療法; 創薬.
Ano: 2011 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/2886
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タフガードの設計、施工は「自然の法則」を遵守し、従う事を基本としております。 OAK
倉持, 勝久.
Palavras-chave: パーラー排水; 水質浄化; 排水の蒸散.
Ano: 2006 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/1754
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ダイズシストセンチュウに対するVerticillium lecanii プロトプラスト融合株の微生物防除資材としての可能性:プロトプラスト融合は植物寄生性線虫の生物的防除において有用な手法と成り得るか? OAK
Shinya, Ryoji; Watanabe, Ai; Aiuchi, Daigo; Tani, Masayuki; Kuramochi, Katsuhisa; Kushida, Atsuhiko; Koike, Masanori; 新屋, 良治; 渡部, 愛; 相内, 大吾; 谷, 昌幸; 倉持, 勝久; 串田, 篤彦; 小池, 正徳.
Verticillium lecanii is a potentially useful biological control agent (BCA) for soybean cyst nematode (SCN), Heterodera glycines. The objective of this study was to screen hybrid strains of V. lecanii, derived from protoplast fusion, for effective control agents of SCN, and to investigate whether the protoplast fusion technique is an effective tool for development of nematode control agents. Three parental strains (Vertalec®, Mycotal®, and B-2) and their 162 hybrid strains were screened in greenhouse pot tests. Some of these hybrid strains suppressed damage on soybean plants and reduced the density of SCN in the soil. In particular, one hybrid strain, AaF42, was observed to reduce the nematode egg density by 93.2% as compared with the control. Furthermore,...
Ano: 2008 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/4162
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トレント大学(カナダ)におけるCommunity-based Research(CBR) OAK
小池, 正徳; 谷, 昌幸; 三浦, 秀穂; 倉持, 勝久; 佐々木, 市夫; Koike, Masanori; Tani, Masayuki; Miura, Hideho; Kuramochi, Katsuhisa; Sasaki, Ichio.
実践報告
Ano: 2006 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/1761
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パーラー排水処理設備共同研究 OAK
倉持, 勝久.
Palavras-chave: パーラー排水; 活性汚泥; 水質管理.
Ano: 2005 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/886
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メタン発酵から排出される消化液の電解酸化処理 OAK
岡本, 明治; 倉持, 勝久; 梅津, 一孝; 谷, 昌幸; 井原, 一高; 渡辺, 恒雄.
Ano: 2004 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/874
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八重山地方における環境に配慮した家畜の外部および内部寄生虫対策について OAK
倉持, 勝久; 中村, 行雄.
Palavras-chave: 八重山; 牛寄生虫; 駆虫.
Ano: 2004 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/875
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十勝地方の牛糞中に生息する食糞性コガネムシの生殖生態について OAK
倉持, 勝久.
Ano: 1994 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/541
Registros recuperados: 30
Primeira ... 12 ... Última
 

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