Common bean (Phaseolus vulgaris L.) landraces in Catalonia, a Mesoamerican germplasm hotspot to be preserved

[EN] Several landraces of common bean with high organoleptic value have resisted the rapid expansion of improved cultivars in Catalonia, in north-eastern Spain. To establish strategies for their preservation and use, we employed RAPD and AFLP markers to investigate the genetic variability within 15 landraces and to identify their original gene pools. A higher percentage of Mesoamerican landraces was found in Catalonia (40%) than in the rest of the Iberian Peninsula, or in Europe (approx. 20%). This is probably due to the exclusion of Catalonia from early trade with the American colonies and stronger commercial links with the Caribbean during the nineteenth century. Our results confirm that Catalan consumers prefer white-seeded common bean varieties of Mesoamerican origin. The landrace ‘Castellfollit del Boix’ showed 69.6% polymorphic RAPD primers, with 53.2% polymorphic bands, while at the other extreme ‘Tavella Brisa’ showed 47.8% polymorphic primers with 25.3% polymorphic bands. An AFLP approach yielded similar results. The high genetic variability found in ‘Castellfollit del Boix’, one of the landraces most threatened, suggests a considerable amount of introgression from improved inbreds.This work was supported by a research grant from CICYT (AGL0035-01).Sanchez, E.; Sifres Cuerda, AG.; Casañas, F.; Nuez Viñals, F. (2007). Common bean (Phaseolus vulgaris L.) landraces in Catalonia, a Mesoamerican germplasm hotspot to be preserved. Journal of Horticultural Science. 82(4):529-534. https://doi.org/10.1080/14620316.2007.11512269S529534824Rodrigo, A. P. (2000).Caracterización Morfoagronómica y Bioquímica del Germoplasma de la Judía Común (Phaseolus vulgarisL.) de España.Ph.D. Thesis, Universidad de Santiago de Compostela, Santiago, Spain. 251 pp

Valoración forrajera de 24 hibridos comerciales de maíz de ciclo largo: parametros de producción de biomasa y de calidad nutritiva

Peer Reviewe

Antibacterial and Antiparasitic Activity of Propyl-Propane- Thiosulfinate (PTS) and Propyl-Propane-Thiosulfonate (PTSO) from Allium cepa against Gilthead Sea Bream Pathogens in In Vitro and In Vivo Studies

The use of phytogenic extracts is considered a sustainable strategy for the prevention of fish diseases, including Alliaceae as a potential option due to their variety of bioactive compounds. In this study, we analyzed the antibacterial and antiparasitic potential of propyl-propanethiosulfinate (PTS) and propyl-propane-thiosulfonate (PTSO) from onions. The in vitro activity against Pseudomonas anguilliseptica, Tenacibaculum maritimum, and Photobacterium damselae of both compounds was tested. In addition, the viability of Sparicotyle chrysophrii larvae was evaluated. Moreover, a diet that consisted of a blend of PTS/PTSO (ALLIUM) was used. A total of 90 gilthead sea bream juveniles were tested against P. damselae subsp. Piscicida after 12 weeks of dietary administration. Furthermore, 150 fish with a rate of 10–15 parasites/fish were fed for 21 days and the number of gill parasites was recorded. All strains were sensitive to both compounds. PTSO showed the highest inhibitory effect against all target strains, while PTS showed higher effectiveness against S. chrysophrii. Fish from ALLIUM group presented the highest probability of survival, increasing up to 91.1%, whereas in the control group, the probability of survival was 66.7%. The number of parasites in the gilthead sea bream decreased in the ALLIUM group over time. These results suggest the inclusion of PTS and PTSO in feed as a natural strategy to prevent antibacterial and antiparasitic fish diseases.Centre for the Development of Industrial Technology (CDTI) 20170032 CER-2021101

Using trendsetting chefs to design new culinary preparations with the "Penjar" tomato

New food products are normally marketed after research regarding consumers' preferences. As an alternative, we used trendsetting chefs to develop and evaluate products with the traditional, long shelf life,Postprint (published version

Long-term postharvest aroma evolution of tomatoes with the alcobaça (alc) mutation

The postharvest evolution of Penjar tomatoes has been studied in four accessions representative of the variability of the varietal type. The long-term shelf life of these materials, which carry the alc allele, was confirmed with 31.2-59.1% of commercial fruits after 6 months of effective conservation at room temperature and a limited loss of weight (21.1-27.9%). Aroma in Penjar tomatoes is differentiated from other tomato varieties by a characteristic 'sharp-floral' aroma descriptor. The evolution of the 'sharp-floral' aroma during postharvest showed a peak of intensity at 2 months of postharvest, though in one accession a delay of 2 months in this response was detected. Out of 25 volatiles analysed, including main and background notes, a reverse iPLS variable selection revealed that the main candidates behind this aromatic behaviour are ¿-terpineol, trans-2-hexenal, 6-methyl-5-hepten-2-one, trans-2-octenal, ¿-pinene, ß-ionone, 2 + 3-methylbutanol and phenylacetaldehyde. Between harvest and 2 months postharvest, most compounds reduced considerably their concentration, while the intensity of the 'sharp-floral' descriptor increased, which means that probably there is a rearrangement of the relative concentrations among volatiles that may lead to masking/unmasking processes. © 2011 Springer-Verlag.This work was supported by grants from the Conselleria de Agricultura, Pesca y Alimentacio de la Comunidad Valenciana, the Fundacion de la Comunidad Valenciana para la Investigacion Agroalimentaria (AGROALIMED) and from the Departament d'Agricultura, Alimentacio i Accio Rural (DAR) de la Generalitat de Catalunya.Casals Missio, J.; Cebolla Cornejo, J.; Rosello Ripolles, S.; Beltran Arandes, J.; Casanas, F.; Nuez Viñals, F. (2011). Long-term postharvest aroma evolution of tomatoes with the alcobaça (alc) mutation. 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