Tohoku journal of agricultural research最新文献

Studies on Variation in Virulence of Rice Blast Fungus, Pyricularia oryzae Cavara III. Occurrence of Variants and Change of Race Constitution During Successive Passages of a Standard Isolate with a Wide Spectrum of Virulence on Rice Leaves 稻瘟病菌毒力变异的研究水稻叶片广毒力标准分离物连续传代过程中变异的发生和种族构成的变化

Tohoku journal of agricultural research Pub Date : 1982-09-25 DOI: 10.3186/JJPHYTOPATH.48.466

T. Namai, Y. Ehara

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引用次数: 3

Studies on the Sporulation of Rice Blast Fungus, Pyricularia oryzae Cavara. IV. Effect of Hyphal Age and Culture Media on Sporulation 稻瘟病菌产孢的研究。菌丝年龄和培养基对产孢的影响

Tohoku journal of agricultural research Pub Date : 1977-04-25 DOI: 10.3186/JJPHYTOPATH.43.175

T. Namai, S. Yamanaka

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引用次数: 8

Studies on the Bacterial Leaf Blight of Rice Plant V. Effect of Phenylacetic Acid on Rice Leaves 水稻白叶枯病的研究。苯乙酸对水稻叶片的影响

Tohoku journal of agricultural research Pub Date : 1976-01-25 DOI: 10.3186/JJPHYTOPATH.42.21

Eiichiro Miyazaki, S. Yamanaka, T. Misawa

{"title":"Studies on the Bacterial Leaf Blight of Rice Plant V. Effect of Phenylacetic Acid on Rice Leaves","authors":"Eiichiro Miyazaki, S. Yamanaka, T. Misawa","doi":"10.3186/JJPHYTOPATH.42.21","DOIUrl":"https://doi.org/10.3186/JJPHYTOPATH.42.21","url":null,"abstract":"イネ白葉枯病病斑組織の加水分解酵素(cellulase・invertase・xylanase・β-amylase・pectinase・lipase・lecithinase・phosphatase・protease)の活性化の有無とその至適pHを測定した。また病原細菌(Xanthomonas oryzae)の培地中での上記酵素類の生産について実験した。1) 病斑組織では,各酵素とも健全組織よりも活性が増大している。ただpolygalacturonaseは発病により活性の増大することはなかった。2) β-amylaseを除く他の酵素は,発病初期の方が活性が大である。ただcellulaseのみは,発病初期よりも発病8日後の方が活性が大であった。3) 病斑組織での酵素活性の増大は,病菌の生産する酵素に由来する所が大きい。4) 病斑組織のproteaseのpH-活性度曲線には,3つのpeakがあるが,pH 8.7の活性が顕著に増加した。5) Proteaseを部分精製し,各種金属塩のprotease活性に与える影響を見た。Mn\"・Co\"・Fe\"は,3種のproteaseすべての活性を促進した。Fe'\"は,pH 5.0-protease活性のみ促進した。Cu\"は,pH 10.5-proteaseのみを阻害したが,Hg\"は,すべてのproteaseを阻害した。6) 供試した7種の病菌菌株のpH 8.7-protease生産能と病原性の強弱との間に平行関係が認められた。","PeriodicalId":23108,"journal":{"name":"Tohoku journal of agricultural research","volume":"10 1","pages":"1-11"},"PeriodicalIF":0.0,"publicationDate":"1976-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89028351","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Studies on the Leaf Blight of Rice Plant III. A Metabolite of the Pathogenic Bacteria 水稻叶枯病的研究3。一种致病菌的代谢物

Tohoku journal of agricultural research Pub Date : 1972-12-01 DOI: 10.3186/JJPHYTOPATH.38.375

Eiichiro Miyazaki, S. Yamanaka, T. Misawa

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引用次数: 3

Studies on the Egg Shell Formation in the Fowl Oviduct I. The Calcium Mobilization at the Each Location of Egg in the Oviduct Segments of the Laying Hens 鸡输卵管内蛋壳形成的研究ⅰ。蛋鸡输卵管内各部位钙的动员

Tohoku journal of agricultural research Pub Date : 1972-01-01 DOI: 10.1267/AHC.6.89

Yoshiteru Katzukura, H. Tamate

{"title":"Studies on the Egg Shell Formation in the Fowl Oviduct I. The Calcium Mobilization at the Each Location of Egg in the Oviduct Segments of the Laying Hens","authors":"Yoshiteru Katzukura, H. Tamate","doi":"10.1267/AHC.6.89","DOIUrl":"https://doi.org/10.1267/AHC.6.89","url":null,"abstract":"Using ten hens of white Leghorn 150 days after hatching, samplings were carried out from their oviducts at various stages of laying or non-laying hens, which were defined in the previous study (7). Histochemical observation of the mucosubstances in the luminal epithelia and gland cells in the lamina propria were performed.The infundibulum has been known as the chalaziferous gland. However, the present study revealed that the secretion materials from the luminal epithelium were sulfomucins (chondroitin sulfate C) and sialo- or hyaluromucins which constituted the chalaza in the lumen together with those from the magnum. PAS-positive mucins in the chalaza were the secretives from the basal cells of the magnum epithelium at stage 2 and 3, where egg was coated with albumen.PAS-positive granules of the luminal epithelium in the isthmus are thought to be a cementing substance in the formation of shell membrane. PAS-positive large granules from the isthmian glands appeared just prior to the egg transportation to the uterus (stage 5) and it served to construct the shell membrane. These large granules contained sulfomucin and sialo- or hyaluromucin, which may be necessary for calcium precipitating sites on the shell membrane.The basal and the ciliated cells of the uterine epithelia secreted two types of granules. The one contained sialomucin and the other protein richly. They were surmized to be components of the organic matrix in the shell.","PeriodicalId":23108,"journal":{"name":"Tohoku journal of agricultural research","volume":"21 1","pages":"219-227"},"PeriodicalIF":0.0,"publicationDate":"1972-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78968038","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

AGAROSE AND AGAROPECTIN IN GELIDIUM AND GRACILARIA AGAR 琼脂糖和琼脂素在葛兰和菖蒲琼脂中的含量

Tohoku journal of agricultural research Pub Date : 1966-01-01 DOI: 10.1016/B978-0-08-011841-3.50050-1

Y. Tsuchiya, K. C. Hong

引用次数: 10

STUDIES ON THE PHOTOSYNTHETIC TISSUES IN THE LEAVES OF CEREAL CROPS I. THE MESOPHYLL STRUCTURE OF WHEAT LEAVES AT DIFFERENT LEVELS OF THE SHOOT 谷类作物叶片光合组织的研究i.小麦叶片不同水平上的叶肉结构

Tohoku journal of agricultural research Pub Date : 1965-10-25 DOI: 10.1626/jcs.33.388

N. Chonan

引用次数: 11

The influence of feed and feeding upon the ruminal gas formation. 11. Hydrogen sulfide in the rumen gas. 饲料和采食对瘤胃气体形成的影响。11. 瘤胃气体中的硫化氢。

Tohoku journal of agricultural research Pub Date : 1962-07-25 DOI: 10.1271/nogeikagaku1924.31.5_300

T. Matsumoto, Y. Shimoda

{"title":"The influence of feed and feeding upon the ruminal gas formation. 11. Hydrogen sulfide in the rumen gas.","authors":"T. Matsumoto, Y. Shimoda","doi":"10.1271/nogeikagaku1924.31.5_300","DOIUrl":"https://doi.org/10.1271/nogeikagaku1924.31.5_300","url":null,"abstract":"(1) 市販の糖蜜-尿素入り配合飼料と乾草とを給与した場合の第一胃ガスの発生状況,第一胃内液性状の変化等を山羊を用いて検討した. (2) 1日1回,午後1時に試験飼料を与えた実験IVの場合は,同じ条件で麩+乾草を与えた実験I,或は麩+乾草+青草を与えた実験IIIの場合に比べて,第一胃ガスの発生が極めて盛であって,第一胃は著しく膨満した.飼料給与後2時間のガス組成中CO2は73%に達し,CO2/CH4は4.4という極めて高い値を示した.即ち糖蜜-尿素入り飼料の給与によって,第一胃ガスの生成,特にCO2の生成が盛になったことが分った. (3) 実験IVの場合と同一量の試験飼料を1日1回,午前8時30分に給与した実験Vの場合は,実験IVに比較するとガスの発生が幾分劣り,飼料給与後2時間のCO2含量は57.2%, CO2/CH4は2.3にすぎず,実験IVの場含のガス組成とは著しく異っていることが注目された.尚,午前9時から青草を自由に摂取させた実験IIの場合と比較しても,そのガス組成は著しく異っていた. (4) 実験Vについては飼料給与直前から8時間後まで,2時間間隔で第一胃ガスを採取し,その組成の変化を検討した.飼料給与直前,即ち前日の飼料給与後24時間ではCH4が41.1%を占めて最も多く, CO2は僅か7.2%にすぎなかった.飼料給与後2時間より8時間までは, CO2が52～57%で主要部分を占め,CH4は25～30%, H2は1～3%であって,飼料給与後のガス組成の経時的変化は,今回の測定範囲内では比較的小さかった. (5) 飼料給与後2時間, 4時間半及び7時間に第一胃内液を採取して,そのpH, V. F. A.,糖濃度及びアンモニア態窒素濃度の変化の模様を検討した. pHは7.3～7.4で普通飼養の場合に比べて甚しくアルカリ側に傾いていた. V. F. A.の生成は比較的少く, 3.9～4.6mM/dl程度にとどまった.第一胃内液の糖濃度は102mg/dl前後でほぼ一定していたが,この値は普通飼養の場合よりもかえって低い.従って飼料の糖含量の増加が,第一胃内液の糖濃度の増加をもたらすとは限らないことが明らかにされた.尚直接還元糖は時間の経過と共に減少を示し,非還元糖は逆に増加する傾向を示し,然も全糖としては常に一定という興味ある知見を得た.アンモニア態窒素は飼料給与後2時間で49mg/dlとなったが, 7時間後には23mg/dlに迄減少し,24時間後の測定値もほぼ同じであった.","PeriodicalId":23108,"journal":{"name":"Tohoku journal of agricultural research","volume":"12 1","pages":"135-140"},"PeriodicalIF":0.0,"publicationDate":"1962-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84411556","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

ON THE REPEATED USE OF MICE IN THE QUANTITATIVE BIOASSAY OF OESTROGEN WITH THE INTRAVAGINAL METHOD 阴道内法雌激素定量生物测定中重复使用小鼠的研究

Tohoku journal of agricultural research Pub Date : 1962-05-30 DOI: 10.1262/JRD1955.7.157

Masami Sato, H. Shimizu, S. Takeuchi

引用次数: 0

Effects of darkness on the reproduction of mice. 黑暗对小鼠繁殖的影响。

Tohoku journal of agricultural research Pub Date : 1960-07-10 DOI: 10.1262/JRD1955.2.52

A. Mori

引用次数: 0