Martinez-Valdivieso D.,Center La Mojonera |
Font R.,Center La Mojonera |
Blanco-Diaz M.T.,Center La Mojonera |
Moreno-Rojas J.M.,Center Alameda del Obispo |
And 3 more authors.
Computers and Electronics in Agriculture | Year: 2014
The potential of near-infrared reflectance spectroscopy (NIRS) for predicting total carotenoid, lutein and β-carotene contents in skin and flesh of Cucurbita pepo fruits was assessed. The carotenoid contents were performed by HPLC, and were regressed against different spectral transformations by modified partial least square (PLSm) regression. Coefficients of determination in the external validation varied from 0.81 to 0.96, which characterize those equations as having from good to excellent quantitative information. The standard deviation (SD) to standard error of prediction ratio (RPD) and range to standard error of prediction ratio (RER) were variable for the different fruit part and compounds, and showed values that were characteristic of equations suitable for screening purposes. PLSm loading plots corresponding to the first terms of the equations showed that effects of the C-H group of starch and lipids, O-H group of water, as well as protein and chlorophyll, were most important in modeling prediction equations. The use of NIRS represents an important breakthrough in breeding for improved nutritional quality of summer squash fruit. © 2014 Elsevier B.V.
Jorrin J.,Center Alameda del Obispo
Acarologia | Year: 2014
This work describes two new species of cosmochthoniids, including a new subgenus, originating from an olive grove in the South of the Iberian Peninsula: Cosmochthonius (Nortonchthonius) oblongisetosus n. subgen. and n. sp. and Phyllozetes subiasi n. sp. Within the genus Cosmochthonius, the original and substantial modification of some posterior hysterosomal setae characterizes the new subgenus C. (Nortonchthonius). Within Phyllozetes, the erectile setae with strong dorsal and marginal spines are the specific character of P. subiasi n. sp.
Lazovic B.,University of Montenegro |
Adakalic M.,University of Montenegro |
Pucci C.,University of Tuscia |
Perovic T.,University of Montenegro |
And 4 more authors.
Scientia Horticulturae | Year: 2016
The present study is the first report on the presence of an important and ancient olive germplasm in Montenegro. Thousands of years of tradition of olive cultivation are demonstrated by the presence of numerous ancient trees. Among them is the so-called ‘Stara Maslina’ (meaning Old olive), which is considered the most ancient olive tree in the country. In addition to their historical and cultural significance, old olives offer horticultural interest due to their genetic potential and their relationships with other olive varieties currently under cultivation. For this reason, in the present study we have carried out a molecular fingerprinting of 16 ancient trees, nine major varieties and four spontaneous olives using ten effective microsatellite loci. The analysis showed that all ancient olive trees belong to seven distinct genotypes, but more than half of them corresponded to the most diffused variety Žutica. The genotype of the ‘Stara Maslina’ tree was found to be quite distant both from all other ancient olives and from the main varieties, but was surprisingly close to some spontaneous olive plants. In addition, the morpho-agronomical characterization of ‘Stara Maslina’ and ‘Žutica’ trees revealed significant morphological differences concerning fruit size and shape and oil content. The comparison of SSR profiles of Montenegro samples with those obtained from 39 other Mediterranean varieties showed a clear separation between the two groups. These results imply that this area may represent a site of local hybridization and selection of olive varieties and we consider that these trees deserve urgent initiatives for their preservation, evaluation and exploitation. © 2016 Elsevier B.V.
Estevez J.,University of Cordoba, Spain |
Gavilan P.,Center Alameda del Obispo |
Garcia-Marin A.P.,University of Cordoba, Spain |
Zardi D.,University of Trento |
Zardi D.,National Consortium of Universities for Atmospheric and Hydrospheric Physics
International Journal of Climatology | Year: 2015
Tipping-bucket rain gauges are convenient and reliable sensors of rainfall measurements; however, like all other field sensors, they are subject to different kinds of errors. Due to their location, rain gauges in this research can record accidental pulses produced by vibrations from works of farm machineries near the station, or may receive water from sprinkler irrigation systems. These spurious inputs are recorded as precipitation data, although they do not correspond to rain, so it is necessary to detect them in order to avoid their inclusion in the future soil-water balance. The main objective of this work is to design a simple quality control procedure to validate precipitation data generated in several stations of the Agroclimatic Information Network of Andalusia (southern Spain), and valid for similar agro-meteorological station networks. The relationship between the degree of cloudiness through attenuation of solar radiation (atmospheric transmittance coefficient), relative humidity and rainfall measurements has been studied in order to separate true and false precipitation records. Meteorological data from 2002 to 2011 were used for the study. © 2014 Royal Meteorological Society.
Ordonez-Fernandez R.,Center Alameda Del Obispo |
Repullo-Ruiberriz De Torres M.A.,Center Alameda Del Obispo |
Roman-Vazquez J.,University of Cordoba, Spain |
Gonzalez-Fernandez P.,Center Alameda Del Obispo |
Carbonell-Bojollo R.,Center Alameda Del Obispo
Journal of Agricultural Science | Year: 2015
The arrival on the market of various types of mulchers and chippers has boosted the use of pruning residues as plant cover among olive growers. In order to increase knowledge regarding the decomposition of these types of residues and their effect on soil fertility, an experiment was performed using different doses and sizes of pruning residues applied on the areas between the lines of olive trees in an organic olive grove. Experiments were conducted over a period of two growing seasons (2009/10 and 2010/11). Treatments consisted of fine (8 cm in diameter) and thick (>8 cm in diameter) pruning residues in the amounts indicated, I=2·65 kg/m2 fine; II=2·65 kg/m2 fine+1·12 kg/m2 thick; III=5·30 kg/m2 fine; IV=5·30 kg/m2 fine+2·24 kg/m2 thick; and a control without residues. As regards the loss of biomass and nutrients during the decomposition of residues, two phases were observed. First, soluble compounds were degraded during a rapid initial phase, while in a second and slower phase, lignocellulosic compounds were decomposed. As a result, the pattern over time of nitrogen (N), phosphorus (P) and potassium (K) release fitted a double exponential model better, regardless of the treatment considered, registering in most cases determination coefficients close to one. The favourable results observed in terms of augmentation in N, P and K soil content following the application of pruning residues confirmed a greater improvement in soil fertility than the soil covered by spontaneous weeds, which is the option most frequently adopted by organic olive growers. The initial amount of pruning residues has influenced the amount of soil nutrients. Considering the entirety of the soil profile (0-40 cm) and the content of these elements in the soil, treatment III, which contained the largest amount of fine residues, was the most efficient in terms of improving soil fertility, recording increases in the concentration of N, P and K of 1805·4, 53·1 and 598·7 kg/ha, respectively. The most unfavourable results were recorded by treatment I, with increases of 480·9 kg/ha in the case of N and a decrease in P content with regard to the control sample. Treatment II increased K (recording 215·2 kg/ha) which was the least in comparison to the control sample. © 2014 Cambridge University Press.
PubMed | Center La Mojonera, Center Alameda del Obispo and University of Almeria
Type: Journal Article | Journal: Journal of the science of food and agriculture | Year: 2016
The characterization of internal (Brix, pH, malic acid, total phenolic compounds, ascorbic acid and total carotenoid content) and external (color, firmness and pericarp wall thickness) pepper quality is necessary to better understand its possible applications and increase consumer awareness of its benefits. The main aim of this work was to examine the feasibility of using visible/near-infrared reflectance spectroscopy (VIS-NIRS) to predict quality parameters in different pepper types. Commercially available spectrophotometers were evaluated for this purpose: a Polychromix Phazir spectrometer for intact raw pepper, and a scanning monochromator for freeze-dried pepper.The RPD values (ratio of the standard deviation of the reference data to the standard error of prediction) obtained from the external validation exceeded a value of 3 for chlorophyll a and total carotenoid content; values ranging between 2.5