Browsing by Author "Vaz, Madalena"
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- Exploring the relationship between phenolic content and seed colour in a Portuguese germplasm collection of common beans (phaseolus vulgaris L.)Publication . Machado, Joana; Vasconcelos, Marta W.; Vaz, Madalena; Barata, Ana Maria; Pereira, Maria Graça; Santos, Carla
- Mineral profilling of a portuguese collection of common bean (phaseolus vulgaris l.) germplasmPublication . Moreira, Rosa; Vaz, Madalena; Barata, Ana Maria; Santos, Carla; Vasconcelos, Marta W.Common bean (Phaseolus vulgaris L.) is the most produced and consumed legume in Portugal. Recent data show an average national production of common bean of about 2397 tons, spread over about 3547 hectares of production area (FAOSTAT, 2017). As a rustic crop, beans are known to have great morphological variability and adapt to different environments and landraces and varieties vary morphologically and nutritionally. The nutritional composition of the grains can be conditioned by factors such as genotype, origin, environmental and cultivation conditions, influencing the quality of the seeds. Crop selection is generaly based on seed agronomic perfomance and the nutritional value has oftentimes been overlooked. The objective of this study was to evaluate 236 Portuguese common bean accessions from different Portuguese regions conserved in the National germplam bank for their mineral composition. Given the large diversity found in this local bean collection, understanding the intraspecific variability of mineral concentration may help in the identification of best performing accessions that can be adapted to different environmental conditions and improve thenutritional value of the seeds from farm to fork.
- Nutritional characterization of a Portuguese germplasm collection of common beans (Phaseolus vulgaris L.)Publication . Machado, Joana; Vasconcelos, Marta W.; Moreira, Rosa; Vaz, Madalena; Barata, Ana Maria; Pereira, Maria da Graça; Santos, Carla
- Nutritional characterization of a Portuguese germplasm collection of common beans (Phaseolus vulgaris L.)Publication . Machado, Joana; Vasconcelos, Marta W.; Moreira, Rosa; Vaz, Madalena; Barata, Ana Maria; Perreira, Maria Graça; Santos, Carla S.
- Quality trait analysis of a portuguese collection of common bean (Phaseolus vulgaris L.) germplasmPublication . Moreira, Rosa; Vaz, Madalena; Barata, Ana Maria; Vasconcelos, Marta W.; Santos, CarlaLack of knowledge on crop adaptability and access to improved varieties, are generating difficulties to crop diversification and legume inclusion in value chains. To overcome these barriers, it is important to assess trait and molecular diversity for selection and production of high-quality seed. The main aim of this study was to analyze different quality traits of a Portuguese collection of common bean (Phaseolus vulgaris L.). A collection of 236 accessions, collected from different regions of the country and conserved at the Portuguese genebank (BPGV) was analyzed for their mineral, protein, starch, phenolics, saponins, antioxidants, tannins and canavanine content. All data was statistically analyzed by principal component analysis (PCA), to determine possible correlations between quality traits and the region of origin of the accessions. Within this collection, 65% of the accessions are from the North of Portugal, and interestingly, these were the accessions with higher intraspecific diversity and highquality outstanding lines when compared to seeds originated from other regions of the country. The nutritional variability observed in the seeds of this common bean collection allowed to identify cultivars with higher nutritional value, data which can be important to farmers and seed companies. These are also of great interest to the food industry sector, as these can be used to produce specific and new food products, high on plant-protein, fiber and with low glycemic index.
- Quality trait analysis of a Portuguese collection of common bean (Phaseolus vulgaris L.) germplasmPublication . Moreira, Rosa; Vaz, Madalena; Barata, Ana Maria; Vasconcelos, Marta W.; Santos, Carla