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The Amidella clade in Europe (Basidiomycota: Amanitaceae): clarification of the...
Arraiano-Castilho, Ricardo; Silva, Ana Cristina; Vila-Viçosa, Carlos; Castro, Mário Rui; Morgado, Luís Neves; Oliveira, PauloThe species in Amanita ser. Amidella (E.-J.Gilbert) Neville & Poumarat form a well-defined clade, but some taxa remain difficult to discriminate. In particular, the concept of Amanita valens (E.-J.Gilbert) Bertault remains controversial. To understand the phylogenetic placement of a set of collections from southern Portugal with a novel nrDNA barcode, we have obtained nrDNA sequences for previously unassessed t...
Micropropagation of Juniperus navicularis, an endemic and rare species from Por...
Castro, Mário Rui; Belo, A.D.F.; Afonso, Anabela; Zavattieri, Maria AmelyJuniperus navicularis Gand (= J. oxycedrus L. subsp. transtagana Franco) is an endemic dioecious shrub from the Plio-Plistocene transition sands of the west Portuguese coast line. It grows in sole or mixed stands along with Pinus pinea and P. pinaster and, more rarely, with Quercus lusitanica. In order to reduce fire incidence in these Mediterranean mixed stands, forest management practices of mechanical or che...
Adventitious rooting of conifers: influence of physical and chemical factors
Ragonezi, Carla; Klimaszewska, Krystyna; Castro, Mário Rui; Lima, Mónica; Oliveira, Paulo; Zavattieri, Maria AmelyIn conifers, vegetative propagation of superior genotypes is the most direct means for making large genetic gains, because it allows a large proportion of genetic diversity to be captured in a single cycle of selection. There are two aims of vegetative propagation, namely large-scale multiplication of select genotypes and production of large numbers of plants from scarce and costly seed that originates from con...