111,840 research outputs found
Influence of (22S, 23S)-homobrassinolide on olive rooting
No full textBrassinosteroids (BRs) have been used in woody plants to increase the rooting response. In this research, (22S,23S)-homobrassinolide (SSHB) was tested, alone and in combination with indole-3-butyric acid potassium salt (K-IBA), to promote olive clonal propagation. In November 2014, cuttings of two Italian cultivars, 'Leccino' (easy to root) and 'Leccio del Corno' (difficult to root), were collected and forced to root. Two studies were carried out: 1) evaluation of the influence on rooting of K-IBA and of different concentrations of SSHB; and 2) evaluation of the simultaneous use of K-IBA and two concentrations of SSHB on adventitious root formation. Samples were also collected for chemical studies. Results obtained in both studies confirmed the positive effect of K-IBA on the rooting percentage and on the number of adventitious roots produced. Furthermore, SSHB had a positive influence on the formation of lateral roots; the response was genotype and treatment dependent. Soluble sugars and phenol composition at the rooted cutting base was differentially influenced by the genotype and the growth regulators used
Watercore in Pomella genovese apples: quality characteristics and antioxidants
No full textThe study aimed to evaluate apple fruit affected by watercore by a physical biochemical point of view and, at the same time, to gain an insight into the mechanisms of the watercore-related oxidative stress and browning. Fruit of the cv ‘Pomella Genovese’ (Malus x domestica Borkh.) were harvested in three different orchards and stored at 1°C (85-90% U.R.) for 4 months. The following analysis were performed on the fruit flesh: density, mechanical (firmness and stiffness) and acoustic (crispness) parameters, soluble solids content (SSC), titratable acidity, ascorbic acid (AA), dehydroascorbic acid (DHA), total phenols and antioxidant activity (DPPH). In all the three orchards, fruit affected by watercore (W-Fruit) had a higher density and SSC than watercore-free ones (WF-fruit), probably because of the sugar-rich liquid that accumulates in the intercellular spaces. The peel colour of the W-fruit was darker, their flesh was firmer and crispier and the content in total phenols increased with respect to the WF samples. Watercore led to a decrease of AA and to an increase of DHA, probably caused by an imbalance of the ascorbic-glutathione cycle. The altered AA/DHA ratio can indicate an oxidative stress status of the fruit. DPPH was higher in W fruit and was related to the phenol content (r=0.83) but not with AA
Ready-to-eat raspberry : qualitative and nutraceutical characteristics during shelf-life
No full textRaspberry (Rubus idaeus L.) fruits are characterised by a high content of nutraceuticals, such as vitamin C, polyphenols and anthocyanins, which are considered antioxidant compounds. The ready-to-eat raspberry product could increase the market opportunities and the consumption of this high-value-added fruit. The aim of this research was to evaluate the evolution of qualitative and nutraceutical characteristics during the shelf-life of ready-to-eat raspberries. Samples from three raspberry cultivars (‘Glen Magna’, ‘Tulameen’ and ‘Heritage’) were sanitized and then packed in polypropylene bowls. The analyses were carried out at harvest (raw material) and after 3, 6 and 8 days of storage at 3°C. The study indicated the loss of fruit firmness as the most problematic aspect, followed by a less important change in hue values from light red to dark red. The modifications of chemical-physical parameters (soluble solids content, pH and titratable acidity) during shelf-life did not compromise the product quality. Processing and cold storage affected only slightly the nutraceutical profile (scavenging activity, phenols and anthocyanin content), except for ascorbic acid, therefore, the ready-to-eat raspberries could be considered a good source of compounds with potential health benefits. Some handling difficulties were highlighted during processing due to the high fragility of fruit which caused a high percentage of waste
Valutazione e selezione di genotipi di olivo tolleranti il freddo in Emilia
No full textL'olivo è una specie di origina subtropicale che si spinge fino ai climi temperati, con notevole adattamento alle varie temperature. Dall'analisi dei dati,sono emerse importanti considerazioni sulla tolleranza e suscettibilità di alcune accessioni emiliane. Pur se raro, il carattere di vera e propria resistenza alle basse temperature è presente in Olea europea
author-bios-SRD-19-0063.R1 – Supplemental material for The Network Structure of Police Misconduct
No full textSupplemental material, author-bios-SRD-19-0063.R1 for The Network Structure of Police Misconduct by George Wood, Daria Roithmayr and Andrew V. Papachristos in Socius</p
Relationship among night temperature. carbohydrate translocation and inhibition of grapevine leaf photosynthesis
No full textGoing Beyond Counting First Authors in Author Co-citation Analysis
No full textThe 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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