930 resultados para Pombal, Sebastião José de Carvalho e Melo, Marqués de, 1699-1782


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Alcance y contenido: Vista de la fachada principal del Palacio del Marqués de Dos Aguas. Plaza de Villarrasa con un carro y un carruaje

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A mapping F2 population from the cross â˜Piel de Sapoâ à PI124112 was selectively genotyped to study the genetic control of morphological fruit traits by QTL (Quantitative Trait Loci) analysis. Ten QTL were identified, five for FL (Fruit Length), two for FD (Fruit Diameter) and three for FS (Fruit Shape). At least one robust QTL per character was found, flqs8.1 (LODâŠ=âŠ16.85, R2âŠ=âŠ34%), fdqs12.1 (LODâŠ=âŠ3.47, R2âŠ=âŠ11%) and fsqs8.1 (LODâŠ=âŠ14.85, R2âŠ=âŠ41%). flqs2.1 and fsqs2.1 cosegregate with gene a (andromonoecious), responsible for flower sex determination and with pleiotropic effects on FS. They display a positive additive effect (a) value, so the PI124112 allele causes an increase in FL and FS, producing more elongated fruits. Conversely, the negative a value for flqs8.1 and fsqs8.1 indicates a decrease in FL and FS, what results in rounder fruits, even if PI124112 produces very elongated melons. This is explained by a significant epistatic interaction between fsqs2.1 and fsqs8.1, where the effects of the alleles at locus a are attenuated by the additive PI124112 allele at fsqs8.1. Roundest fruits are produced by homozygous for PI124112 at fsqs8.1 that do not carry any dominant A allele at locus a (PiPiaa). A significant interaction between fsqs8.1 and fsqs12.1 was also detected, with the alleles at fsqs12.1 producing more elongated fruits. fsqs8.1 seems to be allelic to QTL discovered in other populations where the exotic alleles produce elongated fruits. This model has been validated in assays with backcross lines along 3 years and ultimately obtaining a fsqs8.1-NIL (Near Isogenic Line) in â˜Piel de Sapoâ background which yields round melons.

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Hay un ejemplar encuadernado con: Memoria razonada sobre las mejoras de que son susceptibles los trabajos del puerto del Grao de Valencia y la población de esta ciudad destinada a la consecución definitiva del primero y al verdadero engrandecimiento de la segunda (Carreres/4681)