1,720,976 research outputs found
La scelta delle specie da coltivare. The selection of the species to grow. La elección de las especies a cultivar.
No full text“Microgreens: novel fresh and functional food to explore all the value of biodiversity” (MicroGREENS) is a project funded by the Italian Ministry of Agriculture and Forestry (Mipaaf - Decree n. 93824 of December, 30th 2014), according to article 9 of the announcement of the public selection for the provision of funds to finance projects in the field of agriculture, food, forestry, fishing and aquaculture related to the goals of Expo Milano 2015. The project was born from the cooperation between the Association ‘ORTINNOVA’ and some researchers of the Department of Agricultural and Environmental Science of the University of Bari ‘Aldo Moro’. The project MicroGREENS aims to broadcast and increase the public awareness on the importance and value of the great heritage of biodiversity of the Italian and Apulian vegetables, revealing how such richness can be exploited to develop novel, fresh, functional and high value food products such as microgreens
Due espressioni dell’agrobiodiversità in orticoltura: germogli e microortaggi
No full textSprouts and microgreens represent a growing market segment within vegetable products. The category of sprouts is legally defined. The production and commercialization of sprouts must comply with strict regulations. Given their short growth cycle, sprouts are usually grown in the dark, without a growing medium, fertilizers and agrochemicals. Their edible portion is constituted by the entire sprout, including the rootlets. From a biological point of view, the sprout represents the first stage of growth of a plant that starts from seed germination. On the other hand, “microgreens” is a marketing term used to describe a category of product that has no legal definition. They differ from sprouts because they require light, a growing medium, and have a longer growth cycle; the edible portion consists in the single stem, the cotyledon leaves and, often, by the emerging first true leaves. Both sprouts and microgreens are mainly consumed as raw products, they have good nutritional value and sensory traits. An important qualitative aspect of these vegetable crops is their microbiological safety, especially in the case of sprouts. In this review we discuss several aspects of sprouts and microgreens, their potential in terms of preservation and enhancement of biodiversity, as well as research and development prospects of those products in horticulture. Sprouts and microgreens represent two further expressions of biodiversity in vegetable production, supplementary to the genetic diversity (inter- and intra-specific) and diversity of the agro-ecosystems. Although the seeds of several cultivar are available on the market, the species and local varieties potentially useful for the production of sprouts and microgreens are numerous, and the vast heritage of agro-biodiversity of each geographical area may represent an extraordinary resource to be explored. Therefore, sprouts and microgreens can contribute to preserve and give value to many landraces that are at risk of genetic erosion or extinction, offering an opportunity to recover and use such genetic material. Moreover, landraces and wild species, are often characterized by a higher nutrient density as compared to commercial improved varieties, widely grown at global level, and represent a good source of vitamins, essential micronutrients and other phytonutrients. In conclusion, the production of sprouts and microgreens from local varieties and wild edible species may provide novel and nutritious food, which can satisfy the demand of modern consumers.Germogli e microortaggi rappresentano due espressioni della biodiversità in orticoltura, che si aggiungono a quelle legate alla diversità genetica (inter- e intra-specifica) e alla diversità degli agroecosistemi. Sono due categorie di prodotti orticoli con peculiari caratteristiche organolettiche e nutrizionali che, tuttavia, si distinguono sia dal punto di vista biologico, sia per quanto concerne l’inquadramento merceologico. Dopo un’introduzione di carattere generale, in questo contributo vengono illustrate le specie utilizzate per la produzione di germogli e micro ortaggi, le caratteristiche nutrizionali, la tecnica di produzione, la qualità e la sicurezza alimentare, nonché le prospettive di ricerca e sviluppo di tali prodotti nel settore orticolo, con particolare riferimento al potenziale di salvaguardia e valorizzazione delle varietà locali e specie eduli spontanee
Phytotoxic Effects of Retentates Extracted from Olive Mill Wastewater Suggest a Path for Bioherbicide Development
Full text linkThe aim of this study was to screen the phytotoxicity of different retentates concentrated in polyphenols and extracted from olive mill wastewater (OMW), namely, nano filtration retentate (RNF) and inverse osmosis retentate (ROI). The activity of both retentates was evaluated using bioassays on dry seeds (with concentrations of 0.0, 0.1, 0.5, 1.0, 5.0, and 10.0% and compared with CaCl2 solutions to evaluate the salinity effects), on germinated seeds (with concentrations of 0.0, 5.0, and 10.0%), and on the emergence of seedlings from the soil (with concentrations of 0.0, 5.0, and 10.0%). Three indicator plant species were used: Lepidium sativum L. (cress), Solanum lycopersicum L. (tomato), and Triticum turgidum subsp. durum Desf. (durum wheat). The results were expressed as the germination rate or emergence rate (GR or ER, respectively) and as the average germination time or average emergence time (AGT or AET, respectively) depending on the bioassays. Salinity showed a certain effect on the GR. Total or near-total inhibition of germination was obtained with the highest concentrations (5.0–10.0%). The dose of 1.0% of RNF and that of 0.5% of ROI caused delays in the germination of cress. The germination of tomato was delayed by RNF and ROI at concentrations of 0.5% and 1.0%. The AGT of durum wheat was not affected by RNF, but was slightly affected by ROI. The development of the seedlings was inhibited by both retentates. The results in the Petri dishes were also confirmed in pots. Retentates could be evaluated as a basis for the development of bioherbicides
Culinary Assessment of Self-Produced Microgreens as Basic Ingredients in Sweet and Savory Dishes
No full text“Microgreens” is a marketing term used to describe young and tender edible seedlings. In this work, a new culinary concept was developed to stimulate the culinary use of self-produced microgreens as basic ingredients of sweet and savory dishes. The production of microgreens in a soilless growing system was considered as a preliminary part of the culinary process for the dishes’ preparation. In order to obtain customized microgreens for the culinary assessment, three different species were self-produced. As a result of the pilot consumer test, all species of microgreens resulted acceptable. A gastronomic session was also applied to develop some dishes using microgreens in the recipe. The culinary promotion of self-produced microgreens not only as garnishing greens may offer to the international gastronomy new ingredients and support the exploitation of local varieties and wild edible plants
Offshoots of globe artichoke: prospects as a traditional agri-food product of puglia (Southern Italy)
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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
Variations on the Author
Full text link“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
Full text linkWe 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
Supplementary Far-Red Light Did Not Affect Tomato Plant Growth or Yield under Mediterranean Greenhouse Conditions
Full text linkIn the Mediterranean region, tomato plants are often cultivated in two short cycles per year to avoid the heat of summer and the low solar radiation of winter. Supplementary light (SL) makes it possible to cultivate during the dark season. In this experiment, a tomato F1 hybrid cultivar DRW7723 was cultivated in a greenhouse for a fall-winter cycle. After transplant, light emitting diode (LED) interlighting, with two light spectra (red + blue vs. red + blue + far-red) was applied as SL. Plant growth, yield, gas exchange, nutrient solution (NS) consumption, and fruit quality were analyzed. In general, the effects of adding far-red radiation were not visible on the parameters analyzed, although the yield was 27% higher in plants grown with SL than those grown without. Tomatoes had the same average fresh weight between SL treatments, but the plants grown with SL produced 16% more fruits than control. Fruit quality, gas exchange and NS uptake were not influenced by the addition of far-red light. Interlighting is, therefore, a valid technique to increase fruit production in winter but at our latitude the effects of adding far-red radiation are mitigated by available sunlight
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