The aim of this PhD thesis was to determine the long-term effects of dietary olive oil and hydrogenated vegetable oil on rumen bacterial composition in dairy cows. For 63 days, 15 dairy cows (5/treatment) were fed a control diet (basal diet; 65% forage: 35% concentrate), a basal diet supplemented...
La extracción de agua subterránea en la Pampa del Tamarugal, Desierto de Atacama, ha puesto en riesgo la sobrevivencia de Prosopis tamarugo, freatófita estricta endémica de la región. En este contexto, esta tesis buscó determinar la estrategia con que P. tamarugo se aclimata a una condición de de...
The groundwater extraction in the Pampa del Tamarugal, Atacama Desert, has put at risk the survival of Prosopis tamarugo, a strict phreatophyte endemic to the region. In this context, this thesis aims to determine the hydraulic strategy with which P. tamarugo faces water stress and survival. The ...
El aumento de la complejidad estructural (en términos de configuración y composición) del paisaje agrícola ha sido descrito como un componente que puede promover la biodiversidad, otorgando una mayor heterogeneidad en los agroecosistemas y beneficiando diversas funciones ecológicas. A su vez, el ...
The increasing of the agricultural landscape complexity (in terms of configuration and composition) has been reported as a biodiversity promoting component, leading greater heterogeneity in agroecosystems, and aiming diverse ecological functions. In turn, the high level of agricultural intensific...
La Marchitez por fusarium, causada por 3 razas de Fusarium oxysporum f. sp. lycopersici (Fol), y la Pudrición de la corona y la raíz provocada por F. oxysporum f. sp. radicis-lycopersici (Forl), son dos de las enfermedades más importantes en el cultivo del tomate. En la zona central de Chile, se ...
Fusarium wilt, caused by 3 races of Fusarium oxysporum f. sp. lycopersici (Fol), and Fusarium crown and root rot caused by F. oxysporum f. sp. radicis-lycopersici (Forl), are two of the most important diseases in tomato cultivation. In the central zone of Chile, the presence of fusariosis causing...
Parental care corresponds to the set of activities carried out by parents to protect and feed their progeny and includes protection against predators, food and transport, among others. In mammals, the feeding of the young through milk is the most costly activity in the reproductive process. There...
In the red raspberry (Rubus idaeus L.) two types of cultivars are known according to their habit of flowering, primocane and floricane. In Chile, the main cultivar used is ‘Heritage’, primocane type. However, it has been seen that this character does not come to be expressed according to environm...
En el frambueso rojo (Rubus idaeus L.) se conocen dos tipos de cultivares según su hábito de floración, remontantes y no remontantes. En Chile, el principal cultivar utilizado es ‘Heritage’, del tipo remontante. Sin embargo, se ha visto que este carácter no llega a expresarse según las condicione...
The ripening of berries is a complex process which is strongly influenced by environmental factors and controlled endogenously. Within which endogenous control, various hormones participate, however, little is known about the role of the brassinosteroids. This work evaluated the effect of applica...
En potros no existe un test que, en forma consistente, pueda predecir la capacidad fértil de su semen. Sin embargo, diversos parámetros han sido usados para evaluar la calidad espermática tanto en muestras frescas, refrigeradas y criopreservadas, vinculándose en menor o mayor medida al potencial ...
Historically, stallion fertility potential has been analyzed by sperm concentration, motility, and morphology when assessing semen quality. Of these measured parameters, motility has been used as a gold standard to evaluate semen. However, none of them is necessarily related to fertility potentia...
In this dissertation, root systems of different grapevine rootstocks have been examined in their response to drought and re-watering and in their ability to take up water through woody roots. Fine roots are commonly thought to be a weak link in the soil-plant-atmosphere continuum, capable of brea...
Jasmonates (JAs) are phytohormones regulating stress responses and developmental
processes. The role of JAs is well known in Arabidopsis, in which they control flavonoid
compounds accumulation like anthocyanins, through regulation of their biosynthesis and
signaling pathways. Specifically, JASMON...
