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| Mellado Vázquez, Adriana. |
| Se estudió la influencia de las condiciones de cultivo (clima, riego o temporal y tipo de suelo) en la composición nutrimental de los tejidos del fruto (epicarpio, pulpa, testa y embrión) y en la remoción de nutrimentos por tejido y por tonelada de fruto fresco de los cvs. Ataulfo, Kent, Keitt y Tommy Atkins. Asimismo, en ‘Ataulfo’ y ‘Tommy Atkins’ se estudió la relación entre el contenido nutrimental en suelo, hojas, epicarpio y pulpa (materia seca) y pulpa fresca, con la calidad postcosecha. Se trabajó con árboles altamente productivos (producción superior a los 150 kg·árbol-1), seleccionados en el 2008 de los que se cosecharon frutos en madurez fisiológica. En la materia seca de cada tejido se determinó la concentración de: N, P, K, Ca, Mg, S, Fe, Cu,... |
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Palavras-chave: Mangifera indica; Epicarpio; Pulpa; Testa; Embrión; Calidad postcosecha; Skin; Pulp; Seed coat; Embryo; Post-harvest quality; Doctorado; Fruticultura. |
| Ano: 2012 |
URL: http://hdl.handle.net/10521/736 |
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| Souza,A.J.; Ferreira,A.T.S.; Perales,J.; Beghini,D.G.; Fernandes,K.V.S.; Xavier-Filho,J.; Venancio,T.M.; Oliveira,A.E.A.. |
| Seed coat is a specialized maternal tissue that interfaces the embryo and the external environment during embryogenesis, dormancy and germination. In addition, it is the first defensive barrier against penetration by pathogens and herbivores. Here we show that Albizia lebbeck seed coat dramatically compromises the oviposition, eclosion and development of the bruchid Callosobruchus maculatus. Dietary supplementation of bruchid larvae with A. lebbeck seed coat flour causes severe weight loss and reduces survival. By means of protein purification, mass spectrometry and bioinformatic analyses, we show that chitin-binding vicilins are the main source of A. lebbeck tegumental toxicity to C. maculatus. At concentrations as low as 0.1%, A. lebbeck vicilins reduce... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chitin-binding proteins; Seed coat; Callosobruchus maculatus; Insect bruchid. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2012000200005 |
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| Moraes,R.A.; Sales,M.P.; Pinto,M.S.P.; Silva,L.B.; Oliveira,A.E.A.; Machado,O.L.T.; Fernandes,K.V.S.; Xavier-Filho,J.. |
| The presence of phaseolin (a vicilin-like 7S storage globulin) peptides in the seed coat of the legume Phaseolus lunatus L. (lima bean) was demonstrated by N-terminal amino acid sequencing. Utilizing an artificial seed system assay we showed that phaseolin, isolated from both cotyledon and testa tissues of P. lunatus, is detrimental to the nonhost bruchid Callosobruchus maculatus (F) (cowpea weevil) with ED50 of 1.7 and 3.5%, respectively. The level of phaseolin in the seed coat (16.7%) was found to be sufficient to deter larval development of this bruchid. The expression of a C. maculatus-detrimental protein in the testa of nonhost seeds suggests that the protein may have played a significant role in the evolutionary adaptation of bruchids to legume seeds. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lima bean; Phaseolin (vicilin); 7S storage globulin; Seed coat; Cowpea weevil; Resistance to bruchids. |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2000000200005 |
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| Khalik, K. Abdel; Maesen, L.J.G. van der. |
| Seed morphology of 45 taxa belonging to 23 genera of Brassicaceae were examined using light and scanning electron microscopy. The taxa included representatives of the tribes Arabideae, Euclidieae, Hesperideae, Lunarieae, Matthioleae, and Sisymbrieae, which all occur in Egypt. Macro- and micromorphological characters, including seed shape, colour, size, the position of the radicle relative to the cotyledons, epidermal cell shape, anticlinal boundaries, outer periclinal cell wall and relief of outer cell walls, are presented. Three types of basic anticlinal cell wall boundaries are recognised and six different shapes of the outer periclinal cell wall are described. A key for the identification of the investigated taxa based on seed characters is provided. |
| Tipo: Article / Letter to the editor |
Palavras-chave: Brassicaceae; SEM; Seed coat. |
| Ano: 2002 |
URL: http://www.repository.naturalis.nl/record/524679 |
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