Search results for "Flore"
showing 10 items of 153 documents
Shaping inflorescence architecture -- A successful alternative to floral specialisation
2009
Infrastructure as interface. Thinking the urban and the high -speed station: italian case-studies.
2011
This presentation will document some results of an ongoing research focusing on the role of infrastructure in contemporary design practice. The methodology is based on critical design theory and combines theoretical aspects with a case-study approach, at the junction of infrastructure, urban design and architecture. It is already well documented that 19th and 20th century infrastructure have deeply affected their programs in order to face new challenges over the last 30 decades. Railway stations are leading examples in this fields: they have gradually implemented their design, that already integrated commercial spaces and facilities, until involving in public space transformation. Instead, …
Vēstures procesa izpratne Nikolo Makjavelli darbos
2018
Maģistra darbs "Vēstures procesa izpratne Nikolo Makjavelli darbos" ir veltīts vēstures teorijas jautājumiem Nikolo Makjavelli sacerējumos. Pētījuma ietvaros tiek analizēti Makjavelli nozīmīgākie darbi - "Pārdomas par Tita Līvija pirmo dekādi", "Valdnieks" un "Florences vēsture". Pētījuma mērķis ir atspoguļot un analizēt Nikolo Makjavelli darbos paustās idejas par vēstures procesu un to ietekmējošajiem faktoriem. Darba ievadošajā nodaļā ir sniegts ieskats Nikolo Makjavelli biogrāfijā, kā arī Itālijas reģiona un Florences republikas politiskajās un kulturālajās norisēs. Otrajā nodaļā tiek aplūkotas Nikolo Makjavelli politiskās un sociālās idejas. Trešajā nodaļā tiek analizēta metafizisko asp…
Pilsētu vēstures problēmas, 1
1974
Allium albanicum (Amaryllidaceae), a new species from Balkans and its relationships with A. meteoricum Heldr. & Hausskn. ex Halácsy
2019
A new species, Alliumalbanicum, is described and illustrated from Albania (Balkan Peninsula). It grows on serpentines or limestone in open rocky stands with a scattered distribution, mainly in mountain locations. Previously, the populations of this geophyte were attributed to A.meteoricum Heldr. & Hausskn. ex Halácsy, described from a few localities of North and Central Greece. These two species indeed show close relationships, chiefly regarding some features of the spathe valves, inflorescence and floral parts. They also share the same diploid chromosome number 2n =16 and similar karyotype, while seed testa micro-sculptures and leaf anatomy reveal remarkable differences. There are …
El mundo vegetal en la mitología clásica y su representación artística
2005
La representación artística de los contenidos de la mitología clásica ofrece innumerables temas de estudio entre los que se encuentra la presencia del mundo vegetal. A partir de las referencias literarias de la Antigüedad, enriquecidas e interpretadas especialmente desde el siglo XVI, el presente artículo explica cómo un buen número de árboles, plantas y flores se convirtieron en atributos de dioses y héroes, bien como símbolo de sus virtudes o de sus actividades. (A)
PHENOLOGICAL AND MORPHOLOGICAL STUDIES OF PISTACIA TEREBINTHUS L. GENOTYPES NATIVE OF BULGARIA WITH DIFFERENT ASSET OF TREE SEXUALITY
2009
The genus Pistacia is a dioecious species staminate and pistillate inflorescences born on different trees and are wind pollinated. In pistachio orchards, female and male flowering periods are often not synchronized. In fact, male trees spread their pollen before the flowers of female trees become receptive. Pollination is commonly devoted to spontaneous males of P. terebinthus. In this research authors refer to the results obtained observing the phenology of the blooming period of monoicous genotypes of P. terebinthus discovered in the Rhodope Mountains (Bulgaria). In some selected trees phenological stages have been observed in situ. The blooming date is influenced by local environmental c…
Towards an ontogenetic understanding of inflorescence diversity
2013
Backgrounds and aims Conceptual and terminological conflicts in inflorescence morphology indicate a lack of understanding of the phenotypic diversity of inflorescences. In this study, an ontogeny-based inflorescence concept is presented considering different meristem types and developmental pathways. By going back to the ontogenetic origin, diversity is reduced to a limited number of types and terms. Methods Species from 105 genera in 52 angiosperm families are investigated to identify their specific reproductive meristems and developmental pathways. Based on these studies, long-term experience with inflorescences and literature research, a conceptual framework for the understanding of infl…
Pollination and reproductive success of two colour variants of a deceptive orchid, Dactylorhiza maculata (Orchidaceae)
2002
Polymorphism in petal colour is common in deceptively pollinated plant species. Most of the deceptively pollinated orchids are food frauds, and in most of them, the deception is not mimetic. These plants have conspicuously coloured flowers which they use as the main attractant of naive pollinators. In a field experiment, we studied the response of bumblebees and other types of flower visitors to colour differences between experimentally paired plants of Dactylorhiza maculata, a nectarless food-deceptive species. In addition, pollen removal, an estimate of male fitness, and fruit production, an estimate of female fitness, were measured in the two colour variants. We found a trend of bumblebe…
Position-dependent reproductive success of flowers in Dactylorhiza maculata (Orchidaceae)
2000
1. This study explores the importance of flower position for reproductive success of individual flowers of the deceptive terrestrial orchid, Dactylorhiza maculata (L.) Soo. 2. Upper flowers had smaller lips and produced lighter pollinia than those in other parts of the inflorescence, probably due to architectural effects. 3. Dry weight of seed capsules decreased from bottom to top in the inflorescence in both open-pollinated and hand-pollinated plants. However, removal of flowers from the middle and lowest parts of the inflorescence considerably increased seed production of the upper flowers. Decreased seed set was due to decreased resource availability because of the long maintenance time …