Search results for "Botanica"

Use of triacylglycerol profiles established by high performance liquid chromatography with ultraviolet–visible detection to predict the botanical ori…

2011

A method for the determination of triacylglycerols (TAGs) in vegetable oils from different botanical origins by HPLC with UV–vis detection has been developed. Using a core-shell particle packed column (C18, 2.6 micron), TAG separation was optimized in terms of mobile phase composition and column temperature. Using isocratic elution with acetonitrile/n-pentanol at 10 °C, excellent efficiency with good resolution between most of the TAG peak pairs, within a total analysis time of 15 min, was achieved. Using mass spectrometry detection, a total of 15 peaks, which were common to oils of six different botanical origins (corn, extra virgin olive, grapeseed, hazelnut, peanut and soybean) were iden…

Pollen morphology and seed germination studies onRetama raetamssp.gussonei, endemic subspecies from Sicily

2013

A study on pollen morphology and seed germination behaviour of Retama raetam (Forssk.) Webb ssp. gussonei (Webb) Greuter, endemic subspecies from Sicily and Calabria, is herein presented, aiming to preserve these populations strongly affected by anthropic pressure.

Vegetazione dei corsi d’acqua della Sicilia in sistemi paesaggistici con problematiche d’impatto ambientale: il bacino del Fiume Oreto (Palermo)

2014

Phytosociological and phytogeographical considerations on the orophilous alliance Berberido aetnensis-Crataegion laciniatae (Rhamno-Prunetea)

2011

Preliminary studies on red palm weevil as potential risk for palm trees in mediterranean basin

2012

The impacts of insect invasive species on human health and on agricutlture have attracted worldwide attention. However, researchers and policymakers rarely directly address the connection between invasive species and loss in natual and cultural heritages. Various attempts have been made to address the plants that are affected by invasive species but the links between these and loss in naturla biodiversity and heritage in botanical and historical gardens are largely lacking in the literature. We report a study on the Red Palm Weevil (RPW), Rhynchophorous ferrugineus (Oliv.) (Fig. 1) (Coleoptera, Curculionidae) which is the most important pest of the palm date trees in many countries. RPW is …

Osservazioni al microscopio elettronico a Scansione (SEM) del rachide fogliare di palme attaccate da Punteruolo rosso

2009

vengono mostrate e commentate le immagini al Microsopio elettronico a scansione del rachide fogliare di Phoenix canariensis attaccate dal Punteruolo rosso

Botāniskā dārza sekciju "Augu daudzveidības pētījumi ex situ" un "Augu selekcija un introdukcija" tēžu krājums (2020. gada 30. janvāris, LU Botāniska…

2020

Latvijas Universitātes 78. starptautiskā zinātniskā konference LU Botāniskajā dārzā notiek 2020. gada 30. janvārī. Krājumā ir 13 ziņojumu kopsavilkumi: pieci kopsavilkumi LU prioritārās tēmas "Ekoloģija un bioloģiskā daudzveidība" apakštēmas/sekcijas "Augu daudzveidības pētījumi ex situ" un astoņi kopsavilkumi sekcijas "Augu selekcija un introdukcija" ziņojumiem.

The paradox of the alien plant Leucaena leucocephala subsp. glabrata (Rose) S. Zárate in Sicily: another threat for the native flora or a valuable re…

2020

With this contribution, an updated picture of the rapid expansion of Leucaena leucocephala subsp. glabrata in Sicily is provided. On the one hand, this is a quite worrying sign, as this woody species figures among the world’s worst invasive alien species. On the other hand, the species shows interesting potential for production purposes (for wood, biomass and for feeding livestock), also considering its nitrogen fixation ability. Consequently, the two opposite options to cope with this species, i.e. cultivation and control/eradication, should accurately take into account the possible uses as well as its invasive behaviou.

A contribution to the characterization of Ruppia drepanensis (Ruppiaceae), a key species of threatened Mediterranean wetlands

2021

To elucidate the taxonomic status of Ruppia drepanensis Tineo ex Guss. (Alismatales, Ruppiaceae), we performed morphological analysis and DNA barcoding of historical materials (including the lectotype) and fresh samples (including those from a recently discovered population near the locus classicus in Sicily, Italy). We conclude that R. drepanensis is a separate species, closely related to R. spiralis L. ex Dumort., that occurs in temporary inland waters from the western to central sectors of the Mediterranean region. We also highlight the importance of vouchers and the need to link molecular investigations to field, ecological, and morphological investigations.

Signs of local adaptation by genetic selection and isolation promoted by extreme temperature and salinity in the Mediterranean seagrass Posidonia oce…

2023

Adaptation to local conditions is known to occur in seagrasses; however, knowledge of the genetic basis underlying this phenomenon remains scarce. Here, we analysed Posidonia oceanica from six sites within and around the Stagnone di Marsala, a semi-enclosed coastal lagoon where salinity and temperature exceed the generally described tolerance thresholds of the species. Sea surface temperatures (SSTs) were measured and plant samples were collected for the assessment of morphology, flowering rate and for screening genome-wide polymorphisms using double digest restriction-site-associated DNA sequencing. Results demonstrated more extreme SSTs and salinity levels inside the lagoon than the outer…