Search results for " trees."

Proceeding of the International Symposium on the Challenge for a Sustainable Production, Protection and Consumption of Mediterranean Fruit and Nuts -…

2012

Effect of soil permanent grass cover on growth, yield and water status of rainfed olive trees in Sicily

2017

The study was carried out in an olive grove located along the hills of northern Sicily where soil had been managed for decades by chemical weeding. Starting in 2008, one portion of the grove was left non-weeded, and the permanent grass cover was managed by mowing 2-3 times per year in winter and spring. In 2011, 2012 and 2013, yield, average drupe weight, percentage of drupe black color (veraison), trunk circumference, shoot elongation, and leaf relative water content (RWC) were determined on 34 adult trees of the cultivar 'Biancolilla' with uniform size and age. In 2013, soil organic matter content and leaf nutrient concentrations were also determined in the two portions of the grove. As e…

Water status, growth, yield and fruit quality of 'Valencia' orange trees under partial root-zone drying

2011

STUDY ON GAMETIC EMBRYOGENESIS VIA IN VITRO ANTHER AND ISOLATED MICROSPORE CULTURE IN FRUIT CROPS

2014

Fruit breeding is mainly based on both conventional (hybridization, mutation and selection) or biotechnological methods (somatic hybridization, genetic transformation and haploid production). The genetic improvement through the conventional methods is limited by many factors such as fruit trees long juvenile period, high heterozygosity, large size and sexual incompatibility. Haploids and doubled haploids, obtained through gametic embryogenesis have a potential use in fruit crops genetic improvement. The change of the microspores fate from the normal gametopytic pathway towards the sporophytic induction is affected by numerous factors. Genotype, medium composition and stress were considered …

Are Sicilian forests at less risk of invasion by alien plants?

Climate change could facilitate the spread of invasive alien plants by making plant communities and individuals weaker and less competitive. Indeed, alien plants are generally more adapted to the rapidly changing environmental conditions that are being determined in the coming decades. Moreover, while alien plants have, until recent years, mainly affected synanthropic communities and man-made habitats, they are increasingly able to affect also more complex natural communities such as forests. The talk will show some Sicilian cases.

Functional Redundancy and Complementarities of Seed Dispersal by the Last Neotropical Megafrugivores

2013

Submitted by Vitor Silverio Rodrigues (vitorsrodrigues@reitoria.unesp.br) on 2014-05-27T11:28:22Z No. of bitstreams: 0Bitstream added on 2014-05-27T14:42:48Z : No. of bitstreams: 1 2-s2.0-84873586375.pdf: 1508075 bytes, checksum: 7e697f6c67a83195e9b0cb525355980e (MD5) Made available in DSpace on 2014-05-27T11:28:22Z (GMT). No. of bitstreams: 0 Previous issue date: 2013-02-07 Background: Functional redundancy has been debated largely in ecology and conservation, yet we lack detailed empirical studies on the roles of functionally similar species in ecosystem function. Large bodied frugivores may disperse similar plant species and have strong impact on plant recruitment in tropical forests. Th…

IMPOVERISHMENT OF SICILIAN (ITALY) HISTORICAL AND CULTURAL ASSETS BY AN ALIEN INSECT SPECIES: THE CASE OF THE RED PALM WEEVIL.

2012

Alien invasive species (IAS) have a disastrous impact on the biodiversity, cultural heritage and economy of a geographic area. The case of the Red Palm Weevil (RPW), an IAS that attacks the non-native palm species Phoenix canariensis, but also native species Chaemerops humilis, especially in urban and peri-urban areas, is reported. These palm trees have played an important role in Sicilian history and cultural heritage since the period of the Arab invasion. The accidental introduction of the RPW has remarkably changed the Sicilian panorama. In this study the chronology and the severity of the effects of RPW on palms so far detected, is reported. In only 7 years the RPW has drastically chang…

Phytoseiid mites associated with forest trees in two "Natura 2000" locations: S.Adrian woods (Sicily) and Fraktò virgin forest (Greece).

2009

Araucaria columnaris (Araucariaceae) casual alien in Sicily

2021

The first case of spontaneous regeneration of Araucaria columnaris in Europe is reported. Data are given on the taxon and on the Sicilian site where A. columnaris - native to New Caledonia (Australia) - tends to spread autonomously.

Schede 27/36. In: Schicchi, R, Raimondo, FM. Schede per il censimento degli alberi monumentali di Sicilia 27-36.

2012

Sicilian monumental trees reports. 27-36. – The reports 27-36 concerning unpublished monumental trees surveyed in Sicily are here presented. They are: the Almond tree of Rifesi Santuary [Prunus dulcis (Mill.) D. A. Webb var. dul- cis]; the Ash tree (Fraxinus angustifolia Vahl subsp. angustifolia) in Alefina land and Tusa country; the Olive trees (Olea euro- paea L. subsp. europaea var. europaea) in the following lands: Murro, Fontecà and Serra Bruno; the largest Apple tree of Crescimanno (Malus crescimannoi Raimondo) and the Hawthorn tree (Crataegus monogyna Jacq.) of Piano Menta; the Willow tree of Mangalaviti Homes (Salix alba L. subsp. vitellina ) and the Common Yew of Tassita Wood (Tax…