Search results for "Genetic resources"

Recovery and genotyping ancient Sicilian monumental olive trees

2023

The long-lived and evergreen olive tree dominates the Mediterranean landscape, representing an agroecological and cultural symbol and a genetic heritage of inestimable value. Sicily, for historical, geographical, and cultural reasons, has a very rich and distinctive olive germplasm. In this work, a large survey was conducted to discover, collect, and characterize the genetic diversity of centennial monumental olive trees from historical sites, such as the Greek Temple Valley (Agrigento), ancient gardens, or farmland present in the western part of the island. Trees were chosen based on their height, trunk, stump size, and presumed age; particularly, only olive trees with an age estimated at …

Genetic variability of Chamaerops humilis (Arecaceae) throughout its native range highlights two species movement pathways from its area of origin

2023

AbstractThe European fan palm (Chamaerops humilis, Arecaceae) is the only native palm in continental Europe, providing ecosystem services that are hard to obtain from other species. However, its populations are declining in some areas due to anthropogenic effects including climate change. Knowledge of genetic variability among natural populations is needed to establish conservation plans, to prevent genetic contamination of native stands by cultivated germplasm and to exploit it as an ornamental species. However, information on the genetic similarities among C. humilis populations is scarce. The aims of this work were to study genetic structure in C. humilis using a set of specifically desi…

IMPORTANCE OF SICILIAN GENETIC RESOURCE

2014

Development of new plant resources (genetic resources and ril populations) in [i]Vicia faba[/i] L. for genetic studies

2014

BAP GEAPSIBAPGEAPSI; absent

Ploidy manipulation for genetic improvement in some Mediterranean fruit crops

2017

Plant breeding is focused on selection of new genotypes with improved traits. Conventional methods based on hybridization and those based on biotechnology (somatic hybridization, genetic transformation, ploidy manipulation, etc.) are used to create novel genetic variations. Biotechnology provides powerful tools for plant breeding, for instance, haploid technology allows achievement of homozygous lines from heterozygous parents in one step, which reduces significantly the time required by conventional methods. Concerning woody species, characterized by self-incompatibility, long juvenile period and high degree of heterozygosity, this technique is the only way to get homozygous lines. Haploid…

Are the helminth communities from unisexual and bisexual lizards different? Evidences from gastrointestinal parasites of Darevskia spp. in Turkey

2015

1Departament de Zoologia, Facultat de Ciencies Biologiques, Universitat de Valencia Dr. Moliner, 50, 46100 Burjassot, Spain; E-mail: vicente.roca@uv.es 2CIBIO Research Centre in Biodiversity and Genetic Resources, InBIO Universidade do Porto, Campus Agrario de Vairao, Rua Padre Armando Quintas, 7. 4485–661 Vairao, Vila do Conde, Portugal; E-mail: carretero@cibio.up.pt 3Departamento de Biologia, Faculdade de Ciencias da Universidade do Porto R. Campo Alegre, s/n, 4169–007 Porto, Portugal; E-mail: fatima.esperanca@cibio.up.pt 4Department of Biology, Faculty of Science, Dokuz Eylul University, Buca, Izmir, Turkey E-mails: cetin.ilgaz@deu.edu.tr, yusuf.kumlutas@deu.edu.tr 5Department of Biology…

RESTORATION OF LATVIAN ALFALFA (Medicago sativa) GENETIC RESOURCES PERSPECTIVE FOR BREEDING

2015

We have carried out restoring of some Latvian alfalfa genetic resources from seeds of accessions that did not germinate in soil at all. Two of them were repatriated from the N. Vavilov All-Russian Institute of Plant Industry (multiplied more than 40 years ago) and three from the Research Institute of Agriculture (Latvia) (multiplied 15-20 years ago). For germination of old seeds we used early elaborated in vitro culture conditions. Germination rate ranged 2-60%, depending from the genotype and seeds storage conditions. Plantlets with well developed roots and 2-3 leaves were planted in the substrate in small pots and grown in a greenhouse about a month, then replanted in the soil in field co…

Estudio de la variabilidad genética de repoblaciones de Quercus ilex L. subsp. ballota (Desf.) Samp. in Bol. en Andalucìa

2005

An adequate management of the reproductive material for reforestation activities is fundamental in the conservation of forest genetic resources. In the present work the levels of genetic diversity and differentiation between artificial stands of Quercus ilex and the adjacent natural stands are assessed with nuclear microsatellites. Also, it was possible to analyse the natural population used as seed source for one of the reforestations studied. The levels of genetic differentiation between natural and artificial stands and the decrease of genetic diversity from the seed origin population to the reforestation are discussed in relation to the transference of seed among provenance regions and …