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| Registros recuperados: 33 | |
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| 八木, 哲生; 谷, 昌幸; 笛木, 伸彦; 田村, 元; 加藤, 拓; 小池, 正徳; YAGI, Tetsuo; TANI, Masayuki; FUEKI, Nobuhiko; TAMURA, Hajime; KATO, Taku; KOIKE, Masanori. |
| http://jssspn.jp/book/magazine.html |
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Palavras-chave: リン酸吸着; 最大吸着量; 堆肥連用; 淡色黒ボク土; 活性アルミ二ウム・鉄. |
| Ano: 2010 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/2968 |
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| 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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| 瀧本, 淳徳; 小池, 正徳; 高橋, 潤一; 梅津, 一孝; KOIKE, Masanori; UMETSU, Kazutaka. |
| 本研究は作物病原菌であるバーティシリウム菌とメロンつる割れ病菌のメタン発酵による死滅効果を明らかにすることを目的に発酵温度35℃と55℃で回分試験を行った。その結果, 微生物を90%死滅させるのに必要な時間T90は, バーティシリウム菌は35℃で7.7日, 55℃で0.6日となった。メロンつる割れ病菌は35℃で0.5日, 55℃では15分で死滅し, 共に55℃での死滅効果が高いことが明らかとなった。 |
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Palavras-chave: バーティシリウム菌; メロンつる割れ病菌; 乳牛ふん尿; メタン発酵; T90. |
| Ano: 2006 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/4318 |
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| Hirano, Emiko; Koike, Masanori; Aiuchi, Daigo; Tani, Masayuki; 平野, 恵美子; 小池, 正徳; 相内, 大吾; 谷, 昌幸. |
| The ability of Verticillium lecanii (Lecanicillium muscarium; B-2) to induce host resistance and defense responses against subsequent challenge with cucumber powdery mildews was examined in a glasshouse. A root test showed that, after inoculation with V. lecanii blastspore on cucumber roots, induction of systemic resistance in those V. lecanii pre-inoculated plants engendered significantly fewer lesions and reduced disease severity compared with non-inoculated plants. Furthermore, in plants inoculated with V. lecanii blastspore on their roots, the fungi showed high colonizing ability on cucumber rhizoplane and inside root tissues. Nevertheless, activities of peroxidase (PO) and phenylalanine ammonia-lyase (PAL) increased slightly, but not significantly. In... |
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Palavras-chave: Induced resistance; Lecanicillium muscarium; Powdery Mildew; Verticillium lecanii. |
| Ano: 2008 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/2277 |
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| Koike, Masanori; Kozawa, Tohru; Okino, Kaori; Nagao, Hideyuki; Shimada, Tohru; 小池, 正徳; 小沢, 徹; 沖野, 香織; 長尾, 英幸; 嶋田, 徹. |
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Palavras-chave: Potato; Verticillium albo-atrum; ジャガイモ. |
| Ano: 1996 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/1342 |
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| 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,... |
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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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| 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... |
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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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| 谷, 昌幸; 溝田, 千尋; 八木, 哲生; 加藤, 拓; 小池, 正徳; TANI, Masayuki; MIZOTA, Chihiro; YAGl, Tetsuo; KATO, Taku; KOIKE, Masanori. |
| 本研究では，十勝地域の農耕地，とくに普通畑土壌にお ける肥培管理などが土壌へのリン酸蓄積量とその形態に及ぼす影響を明らかにすることを目的とした.畑地およひ隣接する未耕地において土壌断面調査と試料採取を行い，土壌中の全リン酸含量および各種形態別リン酸含量の垂直分布を調べたさらに，仮比重および未耕地と農耕地における土壌の層厚差を考慮し正味のリン酸蓄積量を調べた. 1)淡色黒ボク土，厚層黒ポク土，および普通褐色低地 土のいずれの農耕地土壌においても，施肥などに由来する余剰リン酸は耕起の影響を受けた表層30~40cm までの 作土層に蓄積し，物理的に撹拌および混和されることにより作土層全体に比較的均一に分布した. 2)未耕地土壌との垂直分布の比較から，黒ボク土では 余剰リン酸が下層へ溶脱せず作土層にのみ蓄積し，褐色低地土では一部が下層へ溶脱していると考えられた. 3) 農耕地における正味のリン酸蓄積量は，黒ボク土で 著しく多く，年平均130kgha-1以上であった. 大部分は，フッ化物イオンの配位子交換能により抽出され，活性アルミニウムなどに特異吸着されていると考えられた褐色低地土では蓄積量が少なく，弱酸可溶のリン酸水素カルシウムや，弱い配位子交換反応で抽出可能な非品質リン酸アルミニウムなどの沈殿として蓄積していると考えられた.Heavy application of phosphate fertilizer and subsequent phosphate accumulation in arable soilsï¼ especially Andosolsï¼ are critical issues for sustainable agriculture in ]apan. The effects of... |
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Palavras-chave: リン酸蓄積; 黒ボク土; 褐色低地土; 層厚差; 垂直分布; Andosols; Brown Lowland soils; Soil thickness; Phosphate accumulation; Vertical distribution. |
| Ano: 2010 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/2696 |
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| 楠木, 芳; 川井, 彩子; 相内, 大吾; 小池, 正徳; 谷, 昌幸; 倉持, 勝久; Kusunoki, Kaori; Kawai, Ayako; Aiuchi, Daigo; Koike, Masanori; Tani, Masayuki; Kuramochi, Katsuhisa. |
| ダイコンバーティシリウム黒点病に対する防除効果を昆虫寄生菌Verticillium lecaniiを用いて検討した。温室試験と圃場試験でV. lecaniiの7菌株（A-2、B-2、C-1、2aF30、2aF31、2aF43、AaF101）を用いて実施した。V. lecaniiの分生胞子を処理したポット試験では全てのV. lecanii菌株で高い防除効果があり、病原菌単独処理と比較して有意な差が認められた。なかでもB-2が最も高い防除効果を示し、病原菌単独処理の発病率51.2％と比較して31.4％となった。V. lecaniiのフスマ培養土を用いたポット試験における病徴抑制効果は病原菌単独処理区との有意な差が認められたのはC-1処理区のみであった。A-2、B-2処理区においても抑制効果の傾向がみられたが、生長促進効果では顕著な差はみられなかった。また、圃場試験では全てのV. lecanii処理区で発病が抑制された。特にB-2、C-1においては高い発病抑制効果があり、病原菌単独処理区の半分以下に抑制していた。商品価値調査においてはV. lecanii処理区で商品価値のあるダイコンの数が優った。以上の結果から、病原菌単独処理と有意な差が認められなかったものもあるが、V. lecaniiはダイコンバーティシリウム黒点病を抑制するのに有効である傾向が確認された。よって、V. lecaniiはダイコンバーティシリウム黒点病に対して生物防除資材として有望であることが示唆された。 Seven strains of Verticillium lecanii were tested for their capacity to control Verticillium black-spot of Japanese radish... |
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Palavras-chave: ダイコンバーティシリウム黒点病; Black spot of Japanese radish; Verticillium dahliae; Verticillium lecanii. |
| Ano: 2006 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/96 |
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| 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... |
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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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| Registros recuperados: 33 | |
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