ABSTRACT. Brown rot can cause dramatic economic impacts on the commercial production of several Prunus species, including peach, nectarine, plum, apricot, cherry and almond, in most producer countries. In Brazil, this disease is caused by Monilinia fructicola. The objective of this work was to estimate the genetic parameters for brown rot resistance in 144 accessions from the germplasm bank of Embrapa Clima Temperado. Fruits of each accession were harvested at the firm ripe stage.

ABSTRACT. Low germination rate of seeds is one of the main obstacles in the grapevine breeding programs. Problems related to reduced germination rates are attributed to dormancy, however, it is assumed that seed integrity may also be contributing to these unsatisfactory results. The objective of this study was to evaluate the integrity of Tannat grapevine seeds, collected at different stages of grape maturation, determined by a water submersion test, aiming to validate the potential of this technique to classify seeds in terms of integrity.

ABSTRACT. Micropropagation is a technique that allows to obtain quality plants, making it an important tool in the production of grapevine matrices. Composition of the culture media and plant growth regulators are commonly tested to adapt micropropagation protocols. The objective of this study was to test concentrations of Murashige & Skoog (MS) culture media and BAP (6-benzylaminopurine) and IBA (indolbutyric acid) plant growth regulators in the multiplication and in vitro rooting stages as part of the elaboration of a Chardonnay grapevine micropropagation protocol.

ABSTRACT. Brown rot caused by the fungus Monilinia fructicola is the most important disease in peach production areas of Brazil. The increased concern with the environment, consumers and workers' health, emphasizes control strategies other than fungicide applications. Among them genetic resistance is the most efficient. However, availability of resistant genotypes is still limited. Thus the main objective of this work was to seek sources of brown rot resistance, as well as to study the segregation, estimate the heritability and verify the possible existence of maternal effects.

ABSTRACT. The fact that Brazilian citriculture has focused on few rootstocks poses several phytosanitary risks to the culture and has made genetic improvement programs develop hybrid genotypes to be used as novel alternatives. This study aimed at evaluating the behavior of 42 different rootstocks regarding their emergence percentage and speed in weather conditions experienced in the extreme south of Brazil.

ABSTRACT. We report the presence of a Pseudofusicoccum species associated with cankers showing gummosis in peach shoots for the first time. Identification was performed by sequence analysis of the concatenated ITS and EF1-α genes. The Pseudofusicoccum sp. was morphologically described and its pathogenicity was evaluated under laboratory conditions. © 2021, Australasian Plant Pathology Society Inc.

ABSTRACT. Nowadays, despite of being a typically temperate fruit crop, peach is found in subtropical and even tropical altitude zones, due to breeding efforts. Genetic knowledge and phenotypic and environmental parameters directly or indirectly influence the characters of economic importance in peach, and they are of great importance for breeding programs orientation.

Contenido. Síntesis de la Situación Agroclimática de Febrero-- Perspectivas Climáticas Trimestrales elaboradas por el IRI de la Universidad de Columbia -- Índice de Vegetación (NDVI) -- Precipitaciones -- Porcentaje de Agua Disponible (PAD) -- Índice de Bienestar Hídrico (IBH) -- Agua No Retenida (ANR) -- Perspectivas Climáticas -Mar-Abr-May elaboradas por el IRI de la Universidad de Columbia. Destacamos para este mes:Previsión de estrés calórico en bovinos. Link directo:http://www.inia.uy/gras/Alertas-y-herramientas/Prevision-ITH-Vacunos/INIA-Termoestres

ABSTRACT. The pitanga (Eugenia uniflora L.) belongs to Myrtaceae family, and it is native to an area extended from central Brazil through to the north of Argentina. The common name, pitanga, is from the Tupy indigenous language, "pi'tãg", meaning red, in reference to the fruit color. The pitanga has the appearance of a small pumpkin, is a green color when immature and, when ripened, may have orange, red to dark purple color. This species is well known by the Brazilian population, and has long been used in folk medicine for different purposes.

¿Por qué colocarlos ? - Cuando se termina una zafra con problemas de picado en fruta, por insectos como grafolita y/o carpocapsa, necesitamos hacer algo para bajar sus poblaciones y asegurarnos un mejor funcionamiento de la confusión sexual en la próxima temporada.