Encontrados 4 documentos, a visualizar página 1 de 1

Genetic variability evaluation and selection in ancient grapevine varieties

Contrary to what usually occurs with other crops, grapevine varieties are mostly landraces that were domesticated by humans centuries or millennia ago from populations of wild grapevines (Vitis vinifera ssp. sylvestris). It is logical to assume that domestication was not been a single, instantaneous act by any of the first farmers but was rather a long succession of negative mass selections of wild plants, foll...

Análise da diversidade e selecção em macieira 'Bravo'

An experimental population containing 149 genotypes of the ‘Bravo’ apple randomly sampled all over it growing regions, as submitted to mass genotypic selection through the methods previously developed or other species such as grapevine. This study led to determining the coefficient of genotypic variation of some characteristics, as a quantifier of intra-varietal genetic diversity. The global values reveal the e...

Evidence for clonal variation in ‘Verdeal-Transmontana’ olive using RAPD, ISSR ...

The role of policlonal selected material for sustainable viticulture

Viticulture can be economically friendly using polyclonal selected material, which maintains the genetic variability within varieties and offers stable behaviour throughout different environments. In Portugal, we carried out a genetic selection that preserves this variability, with good production, good quality and good sanitary state of the vegetative material. To select polyclonal material from one variety, w...