|
|
|
| Registros recuperados: 16 | |
|
|
| Silva, Lílian Abadia da; Sales, Juliana de Fátima; Neves, José Maria Gomes; Santos, Heloísa Oliveira dos; Silva, Glicélia Pereira. |
| Studies evaluating the internal morphology and seed quality of native species are essential for successful conservation programs. Our aim was to verify the efficiency of X-ray imagery in evaluating cashew-tree-of-the-cerrado (Anacardium othonianum Rizz.) achene viability after desiccation. The achenes were collected at 12% water content (w.b.) and dried in silica gel until they reached 10, 8, 6, and 4% (w.b.). The fruit morphology and the quality of the seeds were evaluated by X-ray test together with vigor, electrical conductivity and emergence tests. Achenes with different water contents were exposed to an X-ray machine at 18 kV for 11 s and were thereafter submitted to emergence tests. The images were analyzed, and the achenes were classified based on... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 5.01.03.03-2 X-Ray; Fruit tree; Cerrado; Desiccation; Internal morphology. Produção e Beneficiamento de Sementes. |
| Ano: 2017 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/32484 |
| |
|
| |
|
| |
|
|
| Dias,Roberto Júnio Pedroso; Bessa,Elisabeth Cristina de Almeida; D'Ávila,Sthefane. |
| The aim of this study was to verify the influence of substrate humidity on desiccation resistance of Subulina octona, continuously exposed, for 48 h, to the temperature of 35 °C. Forty individuals conditioned in 2 plastic boxes, one box containing black earth humidified with 40 ml water and the other one containing dry black earth were used. The retraction of cephalopodal mass inside the shell and the number of dead individuals was evaluated. Snails from dry and humid substrate boxes showed cephalopodal mass retraction of 9.9 cm±2.88 and 2.78 cm±3.17, respectively, after 12 h of exposure; 8.55 cm±1.3 and 6.33 cm±2.91, after 24 h; 11.07 cm±4.19 and 7.27 cm±2.7, after 36 h, 9.12 cm±2.15 and 6.47 cm±2.11, after 48 h. Every individual of dry substrate box died... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Land snail; Desiccation; Cephalopodal mass retraction; Substrate; Humidity. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132007000100016 |
| |
|
| |
|
|
| Bautista Ramírez, Edgardo. |
| El piñón mexicano (Jatropha curcas L.) es una especie de vital importancia debido a su potencial utilitario como alternativa para la generación de biodiesel y alimenticio tanto humano como animal. Dado que es una especie a la que recientemente se le ha prestado atención, se carece de información para la conservación adecuada del germoplasma. Asimismo, se han encontrado colectas o genotipos que presentan altos niveles de compuestos que causan toxicidad. Con la finalidad de dar alternativas para su conservación y utilización, en el presente estudio se evaluó el nivel de tolerancia a la desecación y la longevidad de las semillas; además, se realizó un análisis químico proximal y la medición de compuestos antinutricionales en semillas procedentes de la región... |
|
Palavras-chave: Piñon mexicano; Jatropha curcas L.; Desecación; Tolerancia; Pine nut; Desiccation; Tolerance; Maestría; Producción de Semillas. |
| Ano: 2010 |
URL: http://hdl.handle.net/10521/310 |
| |
|
| |
|
|
| Monaco, Cristian; Wethey, David S.; Gulledge, Shadow; Helmuth, Brian. |
| The body size of a mobile intertidal invertebrate can determine its access to different microhabitats, and thus alter its exposure to environmental stressors. We surveyed a rocky intertidal keystone predator, the sea star Pisaster ochraceus, and characterized size-dependent distribution, defined by individuals' shore level and refuge use. At 2 field sites (in California and Oregon, USA) we examined temporal and geographical variability in habitat selection. We evaluated the hypothesis that environmental drivers measured on-site and body temperatures measured using biomimetic sensors (i.e. 'robo-sea stars'), explained the observed distribution patterns, including shore-level size gradients, with larger animals lower on the shore. We tested the effect of... |
| Tipo: Text |
Palavras-chave: Ecology; Physiology; Rocky intertidal; Environmental stress; Climate change; Temperature; Desiccation; Solar radiation; Body size; Behavior. |
| Ano: 2015 |
URL: https://archimer.ifremer.fr/doc/00605/71695/70137.pdf |
| |
|
|
| Maguire, Julie A.; Fleury, Pierre-gildas; Burnell, Gavin M.. |
| (Not controled OCR) Because biological systems do not work in isolation, behavioral, biochemical, and physiological tests can give an overview of an individual's vital processes and reaction to stress. Two stress gradients were applied in this study, a short acute desiccation stress and a long-term density stress. These stress gradients were used to assess the usefulness of various techniques for quality assessment: namely, a standard salinity stress test, condition index, recessing speed of the scallop, adenylic energetic charge (AEC). and percentage carbohydrate content of the striated muscle. The results showed that AEC could be used effectively to measure the effect of a short-term stress. In the striated muscle. AEC levels were useful in... |
| Tipo: Text |
Palavras-chave: Density; Desiccation; Quality; Stress; Pecten maximus. |
| Ano: 1999 |
URL: http://archimer.ifremer.fr/doc/1999/publication-2450.pdf |
| |
|
| |
|
| |
|
|
| MACHADO,L.A.Z.; COMUNELLO,É.; CECATO,U.; CONCENÇO,G.. |
| ABSTRACT: The purpose of this study was to evaluate forage plant susceptibility in Urochloa ssp. and Megathyrsus maximus with two glyphosate herbicide doses, to increase the efficiency of integrated crop-livestock farming systems. A randomized block design was adopted, in a split-plot arrangement, with six replications. In the main plots, the following treatments were established: Urochloa ruziziensis, U. decumbens, U. brizantha cvs. Xaraés, BRS Piatã and BRS Paiaguás, Megathyrsus maximus cvs. Aruana and BRS Tamani; in the subplots, there were doses of glyphosate herbicide; 0.72 and 1.44 kg a.e. ha-1. The estimated control percentage was consisted of a grading scale from zero (fully living tiller) to 100 (fully dead tillers), assigned 7; 14; 21 and 28 days... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brachiaria; Desiccation; Megathyrsus; Panicum; Urochloa. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100302 |
| |
|
|
| CORREIA,N.M.; ACRA,L.T.; BALIEIRO,G.. |
| This study aimed to control different populations of Digitaria insularisby glyphosate herbicide, isolated and mixed, besides the combination of methods (chemical and mechanical) to manage resistant adult plants. Three experiments were conducted, one in pots which were maintained under non-controlled conditions and two under field conditions. In the experiment in pots, twelve populations of D. insularis were sprayed with isolated glyphosate (1.44 and 2.16 kg a.e. ha-1) and mixed (1.44 and 2.16 kg a.e. ha-1) with quizalofop-p tefuryl (0.12 kg i.a. ha-1). The treatment of 1.44 kg a.e. ha-1 of glyphosate plus 0.12 kg a.i. ha-1 of quizalofop was sufficient for adequate control (>95%) of all populations. Population 11 (area of grain production in Itumbiara,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Desiccation; Glyphosate; Tolerance; Genetic variability. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582015000100093 |
| |
|
|
| Lima,S.F.; Timossi,P.C.; Almeida,D.P.; Silva,U.R.. |
| The success of conservation systems such as no-till depends on adequate soil cover throughout the year, which is possible through the use of cover crops. For this purpose the species belonging to the genus Urochloa has stood out by virtue of its hardiness and tolerance to drought. Aiming ground cover for the no-till system, the objective was to evaluate the establishment of two species of the genus Urochloa, in three sowing methods, in the weed suppression and the sensitivity of these forages to glyphosate. The study design was a randomized block with a 2 x 3 x 3 factorial arrangement, in which factor A was composed of Urochloa ruziziensis and Urochloa hybrid CIAT 36087 cv. Mulato II, factor B was formed by sowing methods: sown without embedding, sown with... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: No-till; Crop-livestock integration; Urochloa sp; Desiccation; Glyphosate. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582014000400004 |
| |
|
|
| Cruz,Eniel David. |
| The objective of this study was to verify the effect of drying on germination of cupuassu (Theobroma grandiflorum (Willd. ex Spreng) K. Schum.) seeds. Desiccation was in forced air oven, with temperature ranging from 23 to 33ºC. Sowing was carried out at 0.5cm of depth in plastic trays in sand and sawdust mixture (1:1), previously sterilized in hot water (100ºC), during 2h. Seeds were left to germinate in a laboratory with no temperature and relative humidity control, under natural light. It was quantified the seed moisture content, in four replications of 10 seeds; the germination percentage, performed during 30 days, with daily counts of the number of germinated seeds; the germination speed index; and number of days to the germination onset. The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Tropical fruit; Recalcitrant seed; Desiccation; Dehydration. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-31222007000300024 |
| |
|
| |
| Registros recuperados: 16 | |
|
|
|
