1,720,960 research outputs found
Mapped markers associated to quantitative traits of the spike in durum wheat germplasm.
No full textOn line < http://www.siga.unina.it/SIGA2001/2_4.html
Tuber spp. biodiversity in one of the southernmost European distribution areas
No full textThe aims of this paper were to study the genetic diversity within and among 6
Tuber taxa, the phylogenetic relationships and the spatial distribution of truffles from the
Basilicata region (southern Italy). Molecular analyses, using the internal transcribed spacer
region, microsatellites, minisatellites and random amplified polymorphic loci revealed the
highest expected intra-specific heterozygosity (He=0.30) in T. aestivum, followed by that
of T. mesentericum (He=0.22). T. borchii (He=0.17), T. magnatum (He=0.16), T. aestivum
fo. uncinatum (He=0.12) and T. brumale fo. moschatum (He=0.09) showed a lower average
heterozygosity. The whole set of markers were demonstrated to be useful in clearly differentiating
Tuber taxa, separating them in two distinct groups and in five sub-clusters,
each corresponding to one single taxon. The first cluster (T. borchii, T. magnatum and
T. brumale fo. moschatum) was more differentiated than the second one (T. aestivum,
T. aestivum fo. uncinatum and T. mesentericum). T. brumale fo. moschatum was the most
differentiated Tuber taxon. It was more related to the white truffles (the closely related
T. borchii and T. magnatum) than to the remaining related black truffles T. aestivum and
T. mesentericum. The amount of Tuber species richness was higher over the western side of
Basilicata, in cold Lauretum and in Castanetum phytoclimatic Pavari’s zones. A spatial
genetic structure was detected for T. aestivum, as shown by the significant correlation
between geographic and genetic distances (rs=0.32; P<0.0001). Integration of molecular
and geographic diversity patterns can allow the selection of sites for Tuber and Tuberrelated
biodiversity conservation
Identificazione genetica di "cluster QTL" per la produzione in genepool di Triticum turgidum L. subvar. Durum Desf
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Assessing genetic variation for flag leaf chlorophyll content in durum wheat germplasm
No full textOn line http://www.siga.unina.it/Breeding.htm
Valutazione della variazione genetica per caratteri quali-quantitativi in frumento duro.
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Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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