Learn More
The induction of polyploids in loquat (Eriobotrya japonica (Thunb.) Lindl.) is of great interest for producing larger and seedless fruits according to market demands. Under this premise, this work was aimed to obtain tetraploid plants of loquat using the antimitotic agent colchicine. Experiments consisted in applying colchicine on shoot apex from in(More)
The heart ventricles of farmed gilthead seabream (Sparus aurata), European seabass (Dicentrarchus labrax) and Senegalese sole (Solea senegalensis) have been examined and we compared them to the corresponding fish from wild populations. These results can help to understand the differences in farmed fish hearts and in the myocardial structure that this(More)
The somatic embryogenesis (SE) capacity of megagametophytes belonging to Continental and Mediterranean Spanish provenances of maritime pine (Pinus pinaster Aiton) was studied, noting factors (megagametophyte developmental stage and culture medium) that enhanced the induction and establishment of SE lines. In both provenances, initiation and establishment of(More)
Somatic embryogenesis (SE) of tree species is the most promising method for the implementation of multivarietal forestry and for biotechnological approaches. To date, however, the application of this technology to mature trees is restricted to a few species. This is the first report on the induction of SE from male catkins of 100-year-old holm oaks (Quercus(More)
Constant intense light causes apoptosis of photoreceptors in the retina of albino fish. However, very few studies have been performed on pigmented species. Tench (Tinca tinca) is a teleost inhabiting dimly lit environments that has a predominance of rods within the photoreceptor layer. To test the hypothesis that constant high intensity light can result in(More)
Loquat (Eriobotrya japonica (Thunb.) Lindl., Maloideae, Rosaceae) is a subtropical evergreen fruit tree indigenous of China, where the center of origin of the species is located. Loquat is grown in all subtropical areas and was introduced in the Mediterranean basin in late eighteenth century. In Europe, the largest germplasm bank is located at Instituto(More)
The fish retina has become a powerful model system for the study of different aspects of development and regeneration. An important aspect in understanding retinal anatomy and function is to trace the development of various cell types during embryonic stages. Several markers that detect the cessation of proliferative activity have been used in studies of(More)
Here we present a detailed study of the major events in the retinal histogenesis in a slow-developing elasmobranch species, the small-spotted catshark, during embryonic, postnatal and adult stages using classical histological and immunohistological methods, providing a complete neurochemical characterization of retinal cells. We found that the retina of the(More)
The patterns of distribution of TUNEL-positive bodies and of lectin-positive phagocytes were investigated in the developing visual system of the small-spotted catshark Scyliorhinus canicula, from the optic vesicle stage to adulthood. During early stages of development, TUNEL-staining was mainly found in the protruding dorsal part of the optic cup and in the(More)
We describe the major events in the retinogenesis in an altricial fish species, the Senegalese sole. The major developmental events in the sole retina occurred early after hatching (posthatching day 0, P0). Thus, (1) plexiform layers became recognizable at P1. (2) Proliferative activity disappeared from the central retina at P1, and, as development(More)