|
|
|
| Registros recuperados: 14 | |
|
|
| Ferreira,Kátia; Torres,Giovana Augusta; Carvalho,Isabelle Vilela de; Davide,Lisete Chamma. |
| The objective of this work was to compare the meiotic behavior and pollen grain viability of three species of Crotalaria. Slides for meiotic analysis were prepared by the air-drying technique. Pollen grain viability was measured by three staining procedures (Alexander's solution, tetrazolium chloride and fluorescein diacetate) and in vitro germination in a sucrose solution. Eight bivalents were observed, confirming previous reports on populations from other regions of Brazil, as well as from other countries. All species showed abnormal meiotic behavior as follows: in Crotalaria micans, cytomixis and abnormal chromosome pairing in diakinesis; in C. spectabilis, abnormal chromosome pairing in diplotene; in C. zanzibarica, shrunk nuclei in leptotene and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Crotalaria; Cytogenetics; Cytomixis; Meiosis; Pollen grain viability. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2009001200012 |
| |
|
| |
|
|
| Andrade,Débora Aparecida Verde de; Ortolani,Flavia Aparecida; Moro,José Roberto; Moro,Fabíola Vitti. |
| Frutos, sementes e plântulas de Crotalaria lanceolata, conhecida popularmente como guizo-de-cascavel, chocalho-de-cobra, xique-xique ou feijão-de-guizo, planta tóxica infestante que ocorre no Estado de São Paulo, foram estudadas morfologicamente e citogeneticamente. Os frutos são secos, deiscentes, polispérmicos e do tipo legume. As sementes são reniformes e o embrião é constituído de eixo embrionário e dois cotilédones. A testa pode apresentar variadas tonalidades de castanhos. A germinação é epígea e fanerocotiledonar. A espécie apresenta número cromossômico diplóide 2n = 16 com formulação cariotípica 12M + 4SM e comprimento cromossômico médio geral de 3,340 ± 0,689. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Citogenética; Crotalaria; Fruto; Germinação; Semente. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062008000300003 |
| |
|
|
| Signoretti,André Gustavo Corrêa; Nava,Dori Edson; Bento,José Maurício Simões; Parra,José Roberto Postali. |
| A study on the biology of Utetheisa ornatrix reared on the artificial diet, was conducted to determine the thermal requirements in each development stage. The aim was to find out the thermal regions in the São Paulo state where the pest could develop on Crotalaria spp. The insects were reared on an artificial diet based on the white beans and yeast. U. ornatrix thermal requirements were tested at 18, 20, 22, 25, 28, 30, and 32ºC 70±20% RH, and 14-h photophase. Lower threshold temperatures (TT) and thermal constants (K) for the egg, larval and pupal stages were 12.7ºC and 51.2 GDD, 13.5ºC and 290.9 GDD, 13.8ºC and 108.4 GDD, respectively; TT and K values for the biological cycle were 13.8ºC and 436.3 GDD. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Crotalaria; Rattlebox moth; Rearing technique. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132008000400001 |
| |
|
|
| Pegoraro,Rodinei Facco; Moreira,Cristiano Gonçalves; Dias,Daniel Gonçalves; Silveira,Thiago Correa. |
| ABSTRACT The implementation of conservationist systems of cultivation, with less soil turning and a greater deposition of plant residue, has increased the stocks of C and N in soil and humic substances, but may reduce the quality of the organic matter (SOM). The aim of this study was to evaluate the storage of carbon and nitrogen in plant residue, humic substances and soil at three depths (0-0.2, 0.2-0.4 and 0.4-0.6 m) and under five systems of cultivation: an old banana plantation (14 years cultivation), renovated banana plantation (renewed 1.5 years earlier), sugarcane plantation (two years cultivation), pasture (three-year-old Colonial grass), crotalaria juncea (cultivated yearly for five years) and native forest, as a reference of a natural semi-arid... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Vegetable residue; Crotalaria; Banana plantation; Sugar cane. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902018000400574 |
| |
|
| |
|
| |
|
| |
|
| |
|
|
| Lombardi,Maria Luiza Colognesi de Oliveira; Moreira,Milene; Ambrósio,Luís Alberto; Cardoso,Elke Jurandy Bran Nogueira. |
| The occurrence of rhizobial communities at four sites under natural vegetation and one site under pasture were examined. Isolates of rhizobia originating from crotalaria (C. junceae), common bean (Phaseolus vulgaris) and pigeon pea (Cajanus cajan) were studied in relation to population density, host specificity and the interaction between rhizobial occurrence, climatic conditions and soil properties. pH values and potential acidity were the soil properties that most affected rhizobial occurrence. Rhizobia from crotalaria and common bean were evaluated at four sites, and from pigeon pea, at five sites. Common bean was the most specific legume, followed by peanuts, crotalaria and pigeon pea. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Rhizobium; Bradyrhizobium; Crotalaria; Pigeon pea; Common bean. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162009000400018 |
| |
|
| |
|
|
| Toebe,Marcos; Machado,Letícia Nunes; Tartaglia,Francieli de Lima; Carvalho,Juliana Oliveira de; Bandeira,Cirineu Tolfo; Cargnelutti Filho,Alberto. |
| Abstract: The objective of this work was to determine the necessary sample size to estimate Pearson’s linear correlation coefficients of four species of crotalaria at precision levels. The experiment was carried out with Crotalaria juncea, Crotalaria spectabilis, Crotalaria breviflora, and Crotalaria ochroleuca, during the 2014/2015 crop year. Eight crotalaria traits were evaluated in 1,000 randomly collected pods per species. For each species, the correlation coefficients were estimated for the 28 pairs of traits, and the sample size necessary to estimate the correlation coefficients was determined at four precision levels [0.10, 0.20, 0.30, and 0.40 amplitudes of the 95% (CI95%) confidence interval] by resampling with replacement. The sample size varies... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Crotalaria; Linear relationships; Resampling; Sample precision. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2019000102002 |
| |
|
|
| Cuco,Silvia Marina; Mondin,Mateus; Vieira,Maria Lúcia Carneiro; Aguiar-Perecin,Margarida L. R.. |
| Foram conduzidos experimentos visando à otimização de procedimentos para preparações citológicas de pontas de raiz com alta freqüência de metáfases mitóticas, apresentando cromossomos com morfologia nítida, em espécies pertencentes a dois gêneros de plantas, Passiflora (Passifloraceae) e Crotalaria (Leguminosae). Para o acúmulo de metáfases, bem como de prófases e prometáfases com cromossomos bem condensados, foram avaliados pré-tratamentos de raízes, em que foram utilizadas diferentes combinações de 8-hidroxiquinolina, inibidor do fuso mitótico, com cicloheximida, inibidor da síntese protéica. As preparações foram coradas pelo método de Feulgen. Os melhores resultados foram obtidos com o tratamento com 8-hidroxiquinolina a 300ppm combinado com... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Passiflora; Crotalaria; Citogenética vegetal; Cromossomos mitóticos; 8-hidroxiquinolina; Cicloheximida. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062003000300004 |
| |
|
| |
| Registros recuperados: 14 | |
|
|
|
