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| Registros recuperados: 1.973 | |
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| Welzen, P.C. van. |
| A world-revision of Arthraxon Beauv. ( Gramineae) is presented. Three wide-spread species, A. hispidus (Thunb.) Makino, A. lanceolatus (Roxb.) Hochst., and A. lancifolius (Trin.) Hochst. are very variable and have caused the description of a great number of taxa, most of which are here reduced to synonomy. There are now 7 species and 9 varieties; for 6 of the latter new combinations are proposed. No new taxa are described. |
| Tipo: Article / Letter to the editor |
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| Ano: 1981 |
URL: http://www.repository.naturalis.nl/record/525125 |
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| Poduschka, Walter. |
| Two female Hemiechinus auritus syriacus (litter mates) were kept together for 4 weeks and demonstrated intense homosexual activity and prolonged oestrus during the entire period. This resulted also in an unwillingness to mate for one and a half, and two and a half years, respectively. A comparison of this abnormal behaviour and its results, with the different sexual effects described in laboratory rodents and domestic animals, indicated that these wellknown effects cannot be demonstrated in Erinaceinae, the effect of the stimuli being mostly quite contrary. |
| Tipo: Article / Letter to the editor |
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| Ano: 1981 |
URL: http://www.repository.naturalis.nl/record/504410 |
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| Malavolta,E.; Silva,A.Q.; Primavesi,A.C.P.A.; Gutierrez,A.S.D.; Kishino,A.Y.; Hass,F.J.; Carvalho,J.G.; Guimares,P.T.G.; Kaminski,J.; Vasconcellos,L.A.B.; Ruy,V.M.; Guilherme,M.R.. |
| O presente trabalho, desenvolvido em casa-de-vegetação com abacaxizeiro cultivar "Smooth cayenne", para observação do efeito de MAP e OAP com e sem uréia adicionados em solução a 1%, via axila da folha D, mostrou que: ambas as fontes tiveram efeitos semelhantes no suprimento de fósforo e a uréia não melhorou a eficiência de absorção, mostrando ainda uma tendência negativa na distribuição do 32p entre as partes estudadas. |
| Tipo: Info:eu-repo/semantics/article |
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| Ano: 1981 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0071-12761981000200008 |
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| Trani,P.E.; Haag,H.P.; Sarruge,J.R.; Dechen,A.R.; Catani,CB. |
| In order to obtain the following informations: a) dry matter production and extraction of nutrients by the fruits at different ages; b) dry matter production and extraction of nutrient by the leaves and "trunk + branches" collected at the flowering stage; c) dry matter production and export of nutrients by pruning (leaves and branches) at the begining dormant stage; A trial was conducted on Latossolo Vermelho Escuro Orto group (Orthox) at Buri, São Paulo State, Brazil. The material was collected from 'Ohio Beauty' and 'Brazil' apples grafted on 'Doucin' 1-2; 3-4; 4-5 and 6-7 years old. The main conclusions were as follows: a) differences were observed on dry matter production by two varieties at the different stages of growth; b) differences were also... |
| Tipo: Info:eu-repo/semantics/article |
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| Ano: 1981 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0071-12761981000100033 |
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| Watkins, J S; Moore, J C; Shipley, Th; Bachman, S B; Beghtel, F W; Butt, A; Didyk, B M; Leggett, Jk; Lundberg, N; Mcmillen, Kj; Niitsuma, N; Shepherd, Le; Stephan, Jf; Stradner, H. |
| During Leg 66 eight sites were drilled to form a transect across the Middle America Trench off southwestern Mexico. Cores from these sites show that accretion began approximately 10 MY ago and has continued to the present. Accretion began with offscraping followed by a 2- to 4- MY episode of folding and faulting with uplift rates of 400-500 m/MY; uplift then slowed to 100-200 m/MY, and seismically resolved deformation ceased as the wedge appeared to rise evenly. Approximately 33% of the sediment flux input into the subduction zone, mainly trench sand and slump deposits, is scraped off and incorporated into the toe of the lower slope; an additional 33% is initially subducted but then peeled off to underplate the accretionary wedge; the remaining 33% is... |
| Tipo: Text |
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| Ano: 1981 |
URL: http://archimer.ifremer.fr/doc/00245/35668/34176.pdf |
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| Arx, J.A. von. |
| Petrak (1949) described the genus Acrocladium (type species: A. andinum Petrak) from unidentified leaves of a liane, collected by H. Sydow in 1937 in Ecuador. He compared the genus with Stachybotrys Corda and Sterigmatobotrys Oudem. The type specimen (W) was available for study. The leaves bear several fungi with hemispherical-discoid fructifications, including Asterinella puiggarii (Speg.) Theiss., Chaetothyrina musarum (Speg.) Theiss., and Asterina cf. guaranitica Speg. The fungus described as Acrocladium andinum is hardly visible with the naked eye, but can easily be recognized under a stereo microscope. Petrak (1949) considered this fungus to be a leaf parasite, but it may be also a mycoparasite. |
| Tipo: Article / Letter to the editor |
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| Ano: 1981 |
URL: http://www.repository.naturalis.nl/record/531629 |
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| Robert, Rene; His, Edouard. |
| L'acétate de tributyle-étain, qui entre dans la composition de certaines peintures antisalissures, est fortement toxique pour les oeufs et les larves D de Crassostrea gigas a la teneur de 5 p.p.b. (HIS et. ROBERT, 1980). Des concentrations inférieures, aussi basses que 1 microgramme par litre, ont été testées sur cette même espèce, mais aussi sur la moule, Mytilus galloprovincialis. |
| Tipo: Text |
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| Ano: 1981 |
URL: http://archimer.ifremer.fr/doc/00091/20268/17912.pdf |
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| Castro,Paulo R.C.; Moraes,Roberto S.. |
| This research deals with the effects of exogenous growth regulators on production of soybean plant (Glycine max cv.. Davis) under greenhouse conditions, At the flower anthesis, 2,3,5-triiodobenzoic acid (TIBA) 20 ppm was applied. Other two applications with TiBA, with intervals of four days, were realized. Before flowering, Agrostemin (1 g/10 ml/3 1), gibberellic acid (GA) 100 ppm, and (2-chloroethyl) trimethylammonium chloride (CCC) 2,000 ppm were applied. It was observed that CCC and TIBA reduced stem dry weight. Soybean plants treated with TIBA reduced weight of pods without seeds , seed number and seed weight. |
| Tipo: Info:eu-repo/semantics/article |
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| Ano: 1981 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0071-12761981000100012 |
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| Castro,Paulo R.C.; Vello,Natal A.. |
| The effects of growth regularots on soybean plant (Glycine max) under greenhouse conditions were studied. Before flower ing, Agrostemmin (1 g/10 ml/3 1), gibberellic acid (GA) 100 ppm, and (2-chloroethyl) trimethylammonium chloride (CCC) 2,000 ppm were applied. At the flower anthesis, 2,3,5 - triio dobenzoic acid (TIBA) 20 ppm was applied. Other two applications with TIBA, with intervals of four days, were realized. Treatment with GA increased plant height while CCC presented a tendency to reduce it. Numbers of leaves, internods, and stems were not affected by the growth regulators. |
| Tipo: Info:eu-repo/semantics/article |
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| Ano: 1981 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0071-12761981000100021 |
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| Le présent rapport a pour but d'analyser la situation actuelle dans les différents centres conchylicoles et de dégager les principales actions susceptibles d'améliorer l'exploitation des milieux d'élevage et, plus généralement, de se traduire par une augmentation de la production d'huîtres et de moules. |
| Tipo: Text |
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| Ano: 1981 |
URL: http://archimer.ifremer.fr/doc/00046/15747/13149.pdf |
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| Le Pichon, X; Huchon, P; Angelier, J; Lyberis, N; Boulin, J; Bureau, D; Cadet, J P; Blanchet, R; Montadert, L; Dercourt, J; Glacon, G; Got, H; Karig, D; Mascle, J; Ricou, Le; Thiebault, F. |
| Active deformation of the sea-floor of the Hellenic trench has been observed using the Cyana SP-3000 submersible. The strain pattern observed on a scale of a few kilometers is similar to the one deduced from an analysis of Seabeam morphological maps on a scale of tens of kilometers. The overall strain pattern is compatible with subduction of the Mediterranean sea-floor toward the northeast. It is characterized by underthrusting in the Western Ionian branch and left-lateral strike-slip faulting in the Eastern Strabo branch. |
| Tipo: Text |
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| Ano: 1981 |
URL: http://archimer.ifremer.fr/doc/00246/35697/34205.pdf |
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| Registros recuperados: 1.973 | |
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