Evaluación de cuatro híbridos de tomate (Solanum lycopersicum L.) en cultivo protegido en el cantón Santa Ana

En las últimas décadas el rendimiento del cultivo de tomate en Manabi – Ecuador, ha disminuido probablemente debido a problemas como: inadecuada selección de híbridos, uso de semillas recicladas, labores culturales inadecuadas y cultivo al aire libre. El objetivo de la investigación fue la evaluación de cuatro híbridos de tomate bajo sistema de cultivo protegido. Se utilizó un diseño de bloques completos al azar (DBCA), con cuatro tratamientos y cuatro repeticiones para cada hibrido de tomate. Los resultados de esta investigación arrojaron que el hibrido Miramar fue el más precoz para floración y fructificación presentó el menor valor 23 días. En los días a floración y fructificación el híbrido Acerado HA3059 fue el más tardío, registró el mayor valor con 25 días y en relación al hibrido Pietro que registró más precocidad a fructificación con 34.25 días. Pero en los días a cosecha el más tardío fue Margo con 73 días. El hibrido Acerado HA3059 necesito la acumulación de 546.18 grados día y en la fructificación 79° grados día y la cosecha con el hibrido Margo registró 1 498.92 grados días de acumulación, mientras que, en las variables agronómicas, altura de planta, diámetro del tallo, número de racimos florales, flores por racimo, flores secundarias por racimo, frutos por racimo, no comerciales por racimo, diámetro del fruto (cm) y peso promedio de fruto (g) no reportaron diferencias estadísticas

HTLV-1 infection in solid organ transplant donors and recipients in Spain

HTLV-1 infection is a neglected disease, despite infecting 10-15 million people worldwide and severe illnesses develop in 10% of carriers lifelong. Acknowledging a greater risk for developing HTLV-1 associated illnesses due to immunosuppression, screening is being widely considered in the transplantation setting. Herein, we report the experience with universal HTLV testing of donors and recipients of solid organ transplants in a survey conducted in Spain. All hospitals belonging to the Spanish HTLV network were invited to participate in the study. Briefly, HTLV antibody screening was performed retrospectively in all specimens collected from solid organ donors and recipients attended since the year 2008. A total of 5751 individuals were tested for HTLV antibodies at 8 sites. Donors represented 2312 (42.2%), of whom 17 (0.3%) were living kidney donors. The remaining 3439 (59.8%) were recipients. Spaniards represented nearly 80%. Overall, 9 individuals (0.16%) were initially reactive for HTLV antibodies. Six were donors and 3 were recipients. Using confirmatory tests, HTLV-1 could be confirmed in only two donors, one Spaniard and another from Colombia. Both kidneys of the Spaniard were inadvertently transplanted. Subacute myelopathy developed within 1 year in one recipient. The second recipient seroconverted for HTLV-1 but the kidney had to be removed soon due to rejection. Immunosuppression was stopped and 3 years later the patient remains in dialysis but otherwise asymptomatic. The rate of HTLV-1 is low but not negligible in donors/recipients of solid organ transplants in Spain. Universal HTLV screening should be recommended in all donor and recipients of solid organ transplantation in Spain. Evidence is overwhelming for very high virus transmission and increased risk along with the rapid development of subacute myelopathy

The PLATO Mission

International audiencePLATO (PLAnetary Transits and Oscillations of stars) is ESA's M3 mission designed to detect and characterise extrasolar planets and perform asteroseismic monitoring of a large number of stars. PLATO will detect small planets (down to <2 R_(Earth)) around bright stars (<11 mag), including terrestrial planets in the habitable zone of solar-like stars. With the complement of radial velocity observations from the ground, planets will be characterised for their radius, mass, and age with high accuracy (5 %, 10 %, 10 % for an Earth-Sun combination respectively). PLATO will provide us with a large-scale catalogue of well-characterised small planets up to intermediate orbital periods, relevant for a meaningful comparison to planet formation theories and to better understand planet evolution. It will make possible comparative exoplanetology to place our Solar System planets in a broader context. In parallel, PLATO will study (host) stars using asteroseismology, allowing us to determine the stellar properties with high accuracy, substantially enhancing our knowledge of stellar structure and evolution. The payload instrument consists of 26 cameras with 12cm aperture each. For at least four years, the mission will perform high-precision photometric measurements. Here we review the science objectives, present PLATO's target samples and fields, provide an overview of expected core science performance as well as a description of the instrument and the mission profile at the beginning of the serial production of the flight cameras. PLATO is scheduled for a launch date end 2026. This overview therefore provides a summary of the mission to the community in preparation of the upcoming operational phases