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| Dantas,Liliane G.; Guerra,Marcelo. |
| A comparative analysis of mitotic chromosomes of Theobroma cacao (cacao) and T. grandiflorum (cupuaçu) was performed aiming to identify cytological differences between the two most important species of this genus. Both species have symmetric karyotypes, with 2n = 20 metacentric chromosomes ranging in size from 2.00 to 1.19 µm (cacao) and from 2.21 to 1.15 mm (cupuaçu). The interphase nuclei of both species were of the arreticulate type, displaying up to 20 chromocentres, which were more regularly shaped in cacao than in cupuaçu. Prophase chromosomes of both species were more condensed in the proximal region, sometimes including the whole short arm. Both species exhibited only one pair of terminal heterochromatic bands, positively stained with chromomycin... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cacao; Cupuaçu; Heterochromatin; Karyotype; RDNA sites; Theobroma. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572010000100017 |
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| Silva,Carlos Rogério Sousa; Venturieri,Giorgini Augusto; Figueira,Antonio. |
| There are two major in vivo collections of species of the genus Theobroma L. in Belém and Marituba, state of Pará, Brazil, and in both there are natural species, as well as natural and artificial interspecific hybrids. In order to organize a database of Brazilian Theobroma species, a description of the existing collections and detailed information about the interspecific hybrids, including an artificial key for their identification, are presented in this article. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Interspecific hybrids; Theobroma; Germplasm; Herrania. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062004000200012 |
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| Capetillo Concepción, Eduardo. |
| S. rubrocinctus daña la epidermis de las hojas, si el ataque es severo las plantas pueden resultar defoliadas parcial o totalmente; al atacar a los frutos les confiere una coloración marrón que dificulta reconocer su grado de maduración. El objetivo de esta investigación fue conocer la fluctuación poblacional de ninfas y adultos y la relación existente con la temperatura y precipitación en una plantación de cacao en Huimanguillo, Tabasco (17°80’ 53.6” N, 93°40’ 37.1” O). Se realizaron muestreos semanales de septiembre de 2011 a agosto de 2012. Los datos climatológicos se tomaron de una estación meteorológica localizada a 5 km de la plantación. La fluctuación poblacional de ambos estados biológicos, ninfas y adultos, manifestó un patrón similar a través... |
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Palavras-chave: Fluctuación poblacional; Theobroma; Thripidae; Cacao; Population fluctuation; Producción Agroalimentaria en el Trópico; Maestría. |
| Ano: 2013 |
URL: http://hdl.handle.net/10521/2215 |
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| Martini,Maria Helena; Lenci,Camila Gonçalves; Figueira,Antonio; Tavares,Débora de Queiroz. |
| Cotyledon mesophyll cell morphology and lipid and protein synthesis of T. grandiflorum, T. subincanum and T. bicolor were analyzed and compared with T. cacao. These species possess foliar cotyledons folded around the hypocotyl radicle axis, typical of Sterculiaceae. Fruit size, morphology and weight are very distinct amongst the four species and so are the respective seeds. The main axis of the T. grandiflorum and T. bicolor seeds measured about 30 mm, while T. subincanum and T. cacao seeds measured 17 mm and 26 mm respectively. The seed weights of T. grandiflorum, T. bicolor, T. subincanum and T. cacao were 11.6 g, 9.4 g, 2.1 g and 3.0 g, respectively. The cotyledon mesophylls of the four species contained mainly polysaccharides and lipid-protein reserve... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Comparative study; Histology; Reserves quantity; Theobroma. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042008000100013 |
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| Martini,Maria Helena; Figueira,Antonio; Lenci,Camila Gonçalves; Tavares,Débora de Queiroz. |
| The amount of cotyledon polyphenolic cells varies extensively within the Theobroma species. The polyphenolic compounds of these cells play a protective role and furthermore have an important function in the development of chocolate flavour. The morphology of the polyphenolic cells of the mesophyll is described and the development of these idioblasts in Theobroma cacao L., T. subincanum Mart., T. obovatum Klotzsch ex Bernoulli, T. grandiflorum (Willd. ex Spreng.) K. Schum., T. microcarpum Mart., T. bicolor Bonpl. and T. speciosum Willd. ex Spreng analysed. The total polyphenolic content in the seeds as determined by spectrophotometry showed a variation of about forty times. The alive, transparent polyphenolic cells are scattered throughout the cotiledonary... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cotyledon mesophyll cells; Polyphenolic cells development; Seed; Theobroma. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042008000300006 |
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| Leal Júnior,Gildemberg A; Duarte,Keila M. R; Albuquerque,Paulo S. B; Tavares,Flávio C. A; Figueira,Antonio. |
| A obtenção de soros policlonais contra fitopatógenos tem por finalidade a elaboração de imunoensaios que permitam identificar e caracterizar os mesmos com rapidez e a custos baixos. Soros policlonais foram produzidos contra extratos das hifas de isolados de Crinipellis perniciosa, agente causal da vassoura-de-bruxa, coletados de cacaueiro (Theobroma cacao) nos estados do Pará e Bahia para identificação e caracterização de isolados de diversas regiões e hospedeiros. O soro denominado de 1 foi produzido a partir do isolado ESJOH-1 (originário do Pará), e o soro 2 foi produzido com o isolado CP-85 (originário da Bahia). Não houve reação cruzada dos soros contra extratos protéicos das espécies Alternaria solani, Marasmius sp., Oudemansiella canarii e... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: ELISA; Moniliophthora roreri; Variabilidade; Vassoura-de-bruxa; Cacaueiro; Theobroma. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-41582005000500004 |
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