|
|
|
| Registros recuperados: 119 | |
|
|
| Normanha,Edgard S.; Boock,Olavo J.. |
| In the present work were studied several varieties of manihot of the Ubatuba area on the north coast of the State of São Paulo. The experiments were carried out at the Experiment Station of that locality with a view to compare the production of roots and meal of each variety with that of the variety "Vassourinha", introduced in that district in 1938 by the Division of Roots and Tubers of the Instituto Agronômico. Said variety ("Vassourinha") is the most cultivated all over the State of São Paulo. Results have shown that among the eleven varieties studied the following exceeded the others as regards production of roots and meal: N.° 1 ("Vassourinha") and N.° 120 ("Santa"). Comparing these two one with another, it was found that N.° 1 surpassed N.° 120, not... |
| Tipo: Info:eu-repo/semantics/article |
|
| Ano: 1942 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87051942001200004 |
| |
|
|
| Brieger,F. G.; Gurgel,J. T. A.. |
| The preliminary work with vegetables was described and special reference was-made to the group Brassica oleracea. a) Plants flowering easily in Piracicaba and probably in the whole State of São Paulo. To this group belongs the lettuce, endive, chichory, carrot, radish, kale, brocoli and cauliflower. b) Plants where special treatment is necessary for flowering, as cabbage. c) Plants that did not flower up to this moment, as Svisschard beet and beet. Three main factors contribute for the seedless condition in the group cabbage : lack of flowering, anormalities of the flowers and self-sterility. The preliminary experiments in controling these factors seem to indicate the possibility of seed production in this group. The systematics of the two species Brassica... |
| Tipo: Info:eu-repo/semantics/article |
|
| Ano: 1942 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87051942001100002 |
| |
|
| |
|
|
| Brieger,F. G.; Lima,A. Rodrigues; Forster,R.; Costa,A. S.; Santos,S. Ribeiro dos. |
| 1. Since our experiments on tobacco during the past years were greatly prejudiced by the extreme effect of the infection by the virus of the "vira-cabeça" causing the death of the great majority of the plants attacked, it was considered necessary to carry out an extensive experiment in order to determine whether there are differences: between localities, between varieties, between times of planting. Thus the experiment was carried out during 3 years in four Experiment Stations in the State of São Paulo: (Campinas, Piracicaba, Tietê e Limeira). In the first year 10 varieties were included and later on their number was reduced to 6. It was planed to sow and plant at regular time intervals and simultaneously in all Exp. Sta's, but this turned out to be... |
| Tipo: Info:eu-repo/semantics/article |
|
| Ano: 1942 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87051942000800002 |
| |
|
|
| Krug,C. A.; Carvalho,Alcides. |
| No presente artigo os autores apresentam os resultados da análise genética referentes à hereditariedade das cores verde, bronze claro e bronze escuro das folhas novas de Coffea arabica L. Baseados em extensos dados de autofecundação, hibridação (F1 e F2) e back-crosses conclue-se que apenas um par de fatores alelomorfos Br-br é responsável pelo aparecimento daquelas cores, br br constituindo o tipo verde, Br br o bronze claro e Br Br o bronze escuro; a coloração bronze escuro é, pois, incompletamente dominante sobre o verde, o Fi entre estes tipos se apresentando de uma tonalidade bronze-clara. No grupo dos bronze-escuros (homozigotos) existe certa variabilidade na expressão máxima da coloração o que, em parte, é atribuido à presença de fatores genéticos... |
| Tipo: Info:eu-repo/semantics/article |
|
| Ano: 1942 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87051942000600001 |
| |
|
| |
|
|
| Graner,E. A.. |
| The methods used in obtaining polyploid cassava (Manihot utilissima Pohl) by colchicine treatment were described in detail. Two solutions of colchicine were tried, one at 0.5% and other at 1.0%, both giving identical results in producing many altered plants. The chromosome number of the altered plants was determined and [a correlation between chromosome duplication and increase of the major diameter of stomata was found. Size of stomata in cassava serves to identify poliploids individuals if the plant produced by treatment is not a chimera, a very frequent event in producing polyploid cassava by colchicine. It was emphasized that the plants obtained by treatment were a type of chimera, with the aerial part polyploid and the subterranean base diploid. The... |
| Tipo: Info:eu-repo/semantics/article |
|
| Ano: 1942 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87051942000200001 |
| |
|
| |
|
| |
|
| |
|
| |
|
| |
|
|
| Vervoort, W.. |
| In the course of 1941 I studied a great number of Hydroida from various northern localities present in the collections of the Zoological Museum at Amsterdam. Most of these collections were made by trawlers from IJmuiden and for the greater part presented to the Museum by Mr. F. P. Vermeulen. They are from localities which are accurately known. Moreover, several samples of Hydroida are present in those collections, which were taken in the neighbourhood of Iceland, either by trawlers from IJmuiden or by Dr. J. Metzelaar and Dr. H. Engel. They were all sent to Dr. P. L. Kramp in 1938, who examined them for his list of Hydroida in "The Zoology of Iceland", vol. 2, pt. 5a. Most of these samples returned identified, but some bottles were returned unnamed from... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 42.72. |
| Ano: 1942 |
URL: http://www.repository.naturalis.nl/record/318941 |
| |
|
|
| Holthuis, L.B.; Lam, H.J.. |
| The Talaud Islands are forming part of the Malay Archipelago, being situated north of Celebes and the Moluccas, south of Mindanao and east of the Sangihe group, between 3°45’ and 5°35’ N. lat. and 126°32’ and 127°10’ E. long. The main group consists of three larger islands, viz. Karakelong, Salebaboe and Kaboeroeang. The Nenoesa islands, a group formed by the small islands of Garete, Karaton, Merampi, Mengkopoe, Intata, Kakelotan and Maroh are situated northeast of the main group, including also Miangas (Palmas), an islet about 65 miles north of Karakelong, near Mindanao. |
| Tipo: Article / Letter to the editor |
|
| Ano: 1942 |
URL: http://www.repository.naturalis.nl/record/525051 |
| |
|
|
| Svedelius, Nils. |
| The genus Galaxaura can in several respects be classed among the most remarkable Florideae. It is not only — with Chantransia — the genus richest in forms of all the genera belonging to the order of Nemalionales, which has more than 70 described species, it also offers, both in its interior and its exterior organization, such a high differentiation, and a tissue specialization going so far, that, as the monographer of the genus, the late Professor F.R. Kjellman (1900), said: ”it may be difficult even in the great province of the Florideae to find forms with a higher or even as high a division of labour in the tissues of the shoot...“. Even if the number of species may actually diminish with further investigations, this is in a way connected with a... |
| Tipo: Article / Letter to the editor |
|
| Ano: 1942 |
URL: http://www.repository.naturalis.nl/record/526299 |
| |
|
|
| Vlerk, I.M. van der. |
| The plates I—XI contain illustrations of all the skulls and horn-cores of Bovidae from the Quaternary of the Netherlands, brought together in the National Museum of Geology at Leyden, Holland. They were all photographed with the occiputs vertical or what is thought to be vertical. They are described in the same order as figured. On the plates I—V are represented the skulls and horn-cores of the domesticated cows. Four races are distinguished among them: the brachyceros-race (fig. 1—25), the frontosus-race (fig. 26), the primigenius-race (fig. 27—41) and the trochoceros-race (fig. 42—46). The brachyceros-skulls and horn-cores have the following characteristics: a sharp angle (30°—50°) between the plane of curvature of the horn-cores and the horizontal... |
| Tipo: Article / Letter to the editor |
|
| Ano: 1942 |
URL: http://www.repository.naturalis.nl/record/505932 |
| |
|
| |
|
|
| Bakker, D.. |
| Besides the Amathusiidae in the general collection the Rijksmuseum van Natuurlijke Historie at Leiden possesses a considerable number of representatives of the group, in excellently preserved specimens, in the collection of the late Mr. J. H. Jurriaanse. Moreover I could study the Amathusiidae in the collection of the Zoological Laboratory at Groningen, at present in the custody of the Leiden Museum. After I had completed my work at Leiden I had an opportunity to examine the material of the group in the Zoologisch Museum at Amsterdam, which, besides the general collection of the Society "Natura Artis Magistra" consists of the collections of the late Messrs. A. Mos and P. J. van den Bergh. In the following pages the different collections at Leiden are... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 42.75. |
| Ano: 1942 |
URL: http://www.repository.naturalis.nl/record/318219 |
| |
|
|
| Kylin, Harald. |
| In einem jüngst erschienenen Aufsatz schreibt Du Rietz (1941 S. 6): ”Pylaiella rupincola (Aresch.) Kylin ist mit Conferva litoralis L. identisch. Kein Grund liegt vor anzunehman‘, dass Linné die auf Ascophyllum an der schwedischen Westküste wachsende Pylaiella litoralis sensu Kylin gekannt und in seine Conferva litoralis miteinbezogen hat. Der Name Pylaiella litoralis (L.) Kjellm. muss deshalb für P. rupincola (Aresch.) Kylin beibehalten werden. Für P. litoralis sensu Kylin schlägt Verf. den neuen Namen Pylaiella Kylinii vor.“ Bei meinen Untersuchungen über Pylaiella litoralis (1933 und 1937) war ich zu der Auffassung gekommen, dass diese Art in sich zwei verschiedene Arten enthielt. Für die eine behielt ich den Namen P. litoralis (L.) Kjellm., die andere... |
| Tipo: Article / Letter to the editor |
|
| Ano: 1942 |
URL: http://www.repository.naturalis.nl/record/526304 |
| |
| Registros recuperados: 119 | |
|
|
|
