1,721,206 research outputs found
Insights into the population structure and association mapping in globe artichoke.
No full textUnderstanding the population genetic structure of crop gene pool is a fundamental prerequisite in plant evolutionary biology and plant breeding. Based on this consideration, in this chapter we pursued two main aims. The first was to review the status of the research pointed at deciphering the population structure of the gene pools of globe artichoke. The second was to show how the use of a well-characterized germplasm collection together with deep genotyping could serve the identification of QTLs for traits of agronomic and economic relevance in globe artichoke
Genome Sequencing of Capsicum Species: Strategies, Assembly, and Annotation of Genes
No full textPepper (Capsicum spp.) belongs to the Solanaceae, which is an economically important family of flowering plants consisting of about 102 genera and over 2500 species. The Solanaceae family includes crops of agronomic importance for which the efforts in genome sequencing are ongoing by almost 10 years (https://www.solgenomics.net/organism/sol100/view). Since the beginning of 2014, various consortia have released the genome sequences of domesticated and wild Capsicum species. The first effort was focused on the whole-genome sequencing of Capsicum annuum CM334 and of Capsicum chinense PI159236, which were widely used as founders of mapping populations and carry important disease resistance traits. Just a couple of months later, the genome sequences of C. annuum Zunla-1 and of the wild species Chiltepin (C. annuum var. glabriusculum) were published. Both studies reported a pepper genome size of ~3–3.5 Gb, rich in repetitive elements (over 80%) with about 35 thousand genes. The improved version of the reference genome CM334 as well as of C. chinense PI159236 together with the sequencing of the domesticated Capsicum baccatum revealed evolutionary relationships and estimated lineage divergence times occurring in Capsicum. Recently, the linked-read sequencing technology has been applied for the sequencing of a C. annuum accession that was an F1 cross hybrid of CM334 and a non-pungent pepper breeding line. Furthermore, genome resequencing studies have been performed with the aim to analyze loci of interest related to biotic/abiotic stresses and to qualitative features. In this chapter, we provide an overview of the genome sequencing and annotation strategies and describe the main results disclosed by all the whole and targeted genome sequencing projects in Capsicum
Electric network: definition of the methodology for technical and experimental analysis and for the analysis of interaction-Controllo del sistema e punti di lavoro nel piano VDC-IDC
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Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Boosting grapevine breeding for climate-smart viticulture: from genetic resources to predictive genomics
Get PDFThe multifaceted nature of climate change is increasing the urgency to select resilient grapevine varieties, or generate new, fitter cultivars, to withstand a multitude of new challenging conditions. The attainment of this goal is hindered by the limiting pace of traditional breeding approaches, which require decades to result in new selections. On the other hand, marker-assisted breeding has proved useful when it comes to traits governed by one or few genes with great effects on the phenotype, but its efficacy is still restricted for complex traits controlled by many loci. On these premises, innovative strategies are emerging which could help guide selection, taking advantage of the genetic diversity within the Vitis genus in its entirety. Multiple germplasm collections are also available as a source of genetic material for the introgression of alleles of interest via adapted and pioneering transformation protocols, which present themselves as promising tools for future applications on a notably recalcitrant species such as grapevine. Genome editing intersects both these strategies, not only by being an alternative to obtain focused changes in a relatively rapid way, but also by supporting a fine-tuning of new genotypes developed with other methods. A review on the state of the art concerning the available genetic resources and the possibilities of use of innovative techniques in aid of selection is presented here to support the production of climate-smart grapevine genotypes
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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