Search results for "Botanica"
showing 10 items of 1665 documents
Hybridization in Capparis spinosa L.: Molecular and morphological evidence from a Mediterranean island complex
2014
Inter-Simple Sequence Repeat (ISSR) molecular markers and morphological analysis were used in order to characterize wild populations and cultivated forms of orphan crop species Capparis spinosa L. in a Mediterranean island complex. Nineteen wild populations belonging to two different subspecies, C. spinosa subsp. spinosa and subsp. rupestris, were sampled in different environments in Sicily and the surrounding islets Lampedusa, Pantelleria and Salina. Different biotypes cultivated in Pantelleria and Salina were analyzed. Six ISSR primers were selected for genetic characterization, and all clear and reproducible bands were scored and analyzed. Among the 47 ISSR bands obtained, 97.5% were pol…
22nd Meeting of the Group of European Charophytologists (GEC)
2019
The 22nd Meeting of the Group of European Charophytologists (GEC) was held from 17 to 21 September 2018 in Palermo. It was convened by the International Research Group on Charophytes (IRGC) and org...
Unpublished Mediterranean records of marine alien and cryptogenic species
2020
Este artículo contiene 18 páginas, 4 figuras.
Effects of foliar application of glycine betaine and chitosan on Puccinellia distans (Jacq.) Pari, subjected to salt stress.
2019
Introduction:Using brackish water for irrigation may expose turfgrasses to salinity stress.Employing the best treatments to maintain high-quality turfs under saline conditions is animportant requirement for turfgrass management.Methods:We tested the response of ahalophyte grass,Puccinellia distans, to irrigation with saline solutions and to foliarapplication of two osmoprotectants, such as glycine betaine (GB) or chitosan (CH). Plantswere grown in pots under controlled conditions and irrigated with 200 mM or 600 mM ofNaCl solutions. The response to salinity treatments and osmoprotectant application wasevaluated after 90 days by measuring leaffiring, leaf density, shoot length and biomass, r…
Effectiveness of glycinebetaine foliar application in relieving salt stress symptoms in two turf-grasses
2014
Salinity is one of the problems that has to be dealt with in turf-grass management, due both to restrictions in freshwater use for landscape irrigation and exposition to salt stress in coastal areas. This has led to the need to select salinity tolerant genotypes and test management practices, such as the application of osmoprotectants, in order to maintain turf quality at acceptable costs. We compared the effects of irrigation with 600 mM NaCl and glycinebetaine (GB) application for 8 weeks on pot-grown weeping alkaligrass (Puccinellia distans (L.) Parl.) and tall fescue (Festuca arundinacea Schreb.). We selected two easily assessable parameters, total clippings fresh weight and chlorophyll…
Disentangling Isoetes setacea and removing threats to Isoetes echinospora
2015
The name Isoetes setacea has been applied to two different species, causing nomenclatural and taxonomic confusion. Some authors have rejected it on that account, yet it is currently used in a sense that is incompatible with its type. That type represents one of two similar species, I. echinospora and I. lacustris, which still today grow together at the type locality. An epitype is designated here, ensuring that I. setacea is sunk in synonymy under I. lacustris. A second name potentially threatening I. echinospora is I. tenella. It is currently regarded as a synonym of I. lacustris, but its type, a plate in Flora Danica, cannot be confidently identified, nor are there any specimens associate…
A conspectus of and key to GreekIsoetes(Isoetaceae), based on a reassessment of Haussknecht's gatherings of 1885
2015
The three Isoetes species recorded from Thessalia (Thessaly) in N Greece by Haussknecht, in 1899, under the names I. setacea, I. heldreichii, and I. phrygia, were reassessed using megaspore and microspore ornamentation in addition to macromorphological features. “Isoetes setacea” is not the SW European I. delilei to which the name I. setacea was generally misapplied, nor “I. echinospora” as it has been called due to a misunderstanding, but a so far undescribed species here named I. haussknechtii; it has not been found again in Haussknecht’s locality but has recently turned up in Peloponnisos and the E Aegean Islands. I. heldreichii, described from Haussknecht’s gathering, is apparently exti…
Global review of recent taxonomic research into Isoetes (Isoetaceae), with implications for biogeography and conservation
2018
With the advent of cytological analysis, Scanning Electron Microscopy, the recognition of sterile hybrids, improved access to wild populations and increasingly comprehensive molecular investigations, there has been a revolution in Isoetes taxonomy in recent times. The last 40 years have seen an almost 100% increase in the diversity documented during the previous two centuries. Four geographic areas account for over 90% of this diversity: northern-central South America, eastern North America, western Eurasia (including the northern Mediterranean) and South to Tropical Africa. There is a significant global conservation concern for Isoetes, with many taxa being rare (known from one to a handfu…
Contributo alla conoscenza del genere Tamarix L. nell'Isola del Giglio (Arcipelago Toscano)
2009
Gli Autori, sulla base di una revisione dei campioni d'erbario depositati presso l'Università di Firenza e di personali raccolte, forniscono un contributo alla conoscenza delle tamerici dell'Isola del Giglio e propongono una chiave di identificazione dei taxa censiti.
I funghi dell'Isola del Giglio (Arcipelago Toscano): primo contributo
2010
The ecological and distributive data on macromycetes of Isola del Giglio (Tuscany Archipelago, ltaly), published in 1900 by Stefano Sommier; are integrated by new data on forty-live macromycetes. The recorded taxa are new for the island with the exception of seven species previously reported by Sommier.