Search results for " flowering"
showing 10 items of 14 documents
Degradation of sexual reproduction in Veronica filiformis after introduction to Europe
2011
Abstract Background Baker’s law predicts that self-incompatible plant species are generally poor colonizers because their mating system requires a high diversity of genetically differentiated individuals and thus self-compatibility should develop after long-distance dispersal. However, cases like the introduction of the self-incompatible Veronica filiformis (Plantaginaceae) to Europe constitute an often overlooked alternative to this rule. This species was introduced from subalpine areas of the Pontic-Caucasian Mountains and colonized many parts of Central and Western Europe in the last century, apparently without producing seeds. To investigate the consequences of the absence of sexual rep…
Crocus sativus L. Ecotypes from Mediterranean Countries: Phenological, Morpho-Productive, Qualitative and Genetic Traits
2021
The characterization of C. sativus ecotypes is of great interest for preserving them from a possible genetic erosion due to the decrease of European cultivation surface. In this study, we evaluated four ecotypes from Italy (Sardinia and Abruzzo), Spain (Castilla-La Mancha), and Greece (Kozani) in order to detect the existence of variability and promote the biodiversity of this crop. Thirty-one traits related to saffron flowering, flower morphology, production of spice and daughter corms, vegetative development (leaf and corm traits), and spice quality, were evaluated. In addition, a genetic analysis through three PCR-based approaches, SSRs, RAPD, and SRAP was assessed. Results highlighted a…
Determining the optimal sowing period at a variety from Dahlia variabilis species from Mignon group
2010
Planted in addition to walls, to the south of the massif, in groups, beats or lawns, Dahlia beautifully decorates parks and gardens, The rebates are used especially varieties with small waist [6]. Today, when the development of green spaces is a real concern of people, we consider important to provide technology for the production of plants that can offer the widest possible variety of species with the widest possible decor period. Thus, the present article presents researches about determining the period of sowing for dwarf dahlias produced in pots, with spring and early summer flowering and used for decoration in green areas. In this experiment were taken in the account characters such se…
Effect of Cutting Size and Basal Heat on Rooting of Micromeria fruticulosa Stem Cuttings
2017
Micromeria fruticulosa (Bertol.) Grande is a small pulviniform shrub, belonging to the Labiates, and characterized by twisted stems and pink-purple flowers. Endemic to Campania and Sicily (Italy), M. fruticulosa grows from sea level to 600 m altitude. This specie might be considered an excellent native plant for landscape purposes in Mediterranean areas because of its long flowering period, extending from November to June, and its tolerance to heat and drought. The exploitation of wild plants for ornamental purposes implies knowledge on the factors influencing the propagation methods. Root development of stem cuttings of M. fruticulosa was investigated in relation to basal heat and cutting …
Forced Flowering in Mandarin Trees Under Phytotron Conditions
2019
[EN] Phytotron has been widely used to assess the effect of numerous parameters on the development of many species. However, less information is available on how to achieve fast profuse flowering in young fruit trees with this plant growth chamber. This study aimed to outline the design and performance of a fast clear methodology to force flowering in young mandarin trees (cv. Nova and cv. Clemenules) and to analyze the influence of induction intensity on inflorescence type. The combination of a short water stress period with simulated spring conditions (day 13 h, 22 °C, night 11 h, 12 °C) in the phytotron allowed flowers to be obtained only after 68-72 days from the time the experiment beg…
Phenology and Fruit Growth Dynamics of Mango (Mangifera indica L.) in Greenhouse and Open Air in Mediterranean Climate
2023
AbstractPhenological evolution of shoots and fruit growth of three mango varieties—Keitt, Osteen and Tommy Atkins—were monitored during two reproductive seasons, from full flowering to fruit harvest on trees cultivated in the open air and inside a greenhouse, in the island of Sicily—Italy. The aim of the study was to assess the behavior of mango trees subjected to summer high temperatures under a permanent plastic cover in the Mediterranean climate. Differences between open air and greenhouse emerged in the dates of first record of major phenological stages and in their duration, and in the fruit growth rates. Greenhouse cultivated trees showed a significant anticipation of flowering and ri…
ULTERIORI APPROFONDIMENTI DEGLI EFFETTI DELLA DIMENSIONE DEGLI ACINI SULLA QUALITA’ DELL’UVA NELLA CV CABERNET SAUVIGNON
2012
In this study we reported the results of a second year of study conducted during 2008 season on irrigated Cabernet Sauvignon\ 1103 P vineyard. We addressed the study of whether differences in berry size (within a population of berries from different bunches) would lead to differences in qualitative parameters and whether flowering process can influence berries variability and qualitative parameters. Berries were classified at pea size into two categories according to their equatorial diameter: ≤ 7 mm as small and ≥ 9 mm as large berries. Development of the two berry categories was evaluated from “pea size” (12th June) to harvest (16th September) in terms of berry mass, equatorial berry diam…
Identification of aroma compounds of Vitis vinifera L. flowers by SPME GC-MS analysis
2015
Using a gas chromatographic method (GC-MSanalysis), it was possible to determine the volatile constituent of an odorous flower from Vitis vinifera varieties growing in Sicily. More than 50 compounds were identified and the technique allowed us to determine that sesquiterpenes, as well as monoterpenes such as limonene and cymene, were the principal components. The odour-profiles allowed us to distinguish between variety groups or even single varieties.
Identification of aroma compaunds of Vitis Vinifera L. flowers by SPME GC-MS analysis
2014
Using a gas chromatographic method (GC-MS-analysis), it was possible to determine the volatile constituent of an odorous flower from Vitis vinifera varieties growing in Sicily. More than 50 compounds were identified and the technique allowed us to determine that sesquiterpenes, as well as monoterpenes such as limonene and cymene, were the principal components. The odour-profiles allowed us to distinguish between variety groups or even single varieties.