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Phenotyping Key Fruit Quality Traits in Olive Using RGB Images and Back Propagation Neural Networks

Plant Phenomics 2023年第3期5卷 484-500页

作者： Giuseppe Montanaro Angelo Petrozza Laura Rustioni Francesco Cellini Vitale Nuzzo Università degli Studi della Basilicata 85100 PotenzaItaly ALSIA Agenzia Lucana Sviluppo Innovazione in AgricolturaMetapontum Agrobios Research Center75010 MetapontoItaly Department of Biological and environmental Sciences and Technologies University of SalentoLecceItaly

To predict oil and phenol concentrations in olive fruit,the combination of back propagation neural networks(BPNNs)and contact-less plant phenotyping techniques was employed to retrieve RGB image-based digital proxies of oil and phenol *** of cultivars(×3)differing in ripening time were sampled(~10-day interval,×2 years),pictured and analyzed for phenol and oil *** to this,fruit samples were pictured and images were segmented to extract the red(R),green(G),and blue(B)mean pixel values that were rearranged in 35 RGB-based colorimetric *** BPNNs were designed using as input variables(a)the original 35 RGB indexes,(b)the scores of principal components after a principal component analysis(PCA)pre-processing of those indexes,and(c)a reduced number(28)of the RGB indexes achieved after a sparse *** results show that the predictions reached the highest mean R^(2) values ranging from 0.87 to 0.95(oil)and from 0.81 to 0.90(phenols)across the *** addition to the R^(2),other performance metrics were calculated(root mean squared error and mean absolute error)and combined into a general performance indicator(GPI).The resulting rank of the GPI suggests that a BPNN with a specific topology might be designed for cultivars grouped according to their ripening *** present study documented that an RGB-based image phenotyping can effectively predict key quality traits in olive fruit supporting the developing olive sector within a digital agriculture domain.

关键词： Image image supporting

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Agro-Biodiversity Spatial Assessment and Genetic Reserve Delineation for the Pollino National Park (Italy)

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Natural Resources 2014年第7期5卷 308-321页

作者： Giovanni Figliuolo Domenico Cerbino agenzia lucana di sviluppo e innovazione in agricoltura Rotonda Italy dipartimento delle Culture europee e del Mediterraneo: Architettura Ambiente Patrimoni Culturali Università degli Studi della Basilicata Matera Italy

Ancient fruit trees, grape vines, traditional crop and garden cultivars have been inventoried in Pollino National Park by adopting a spatial sampling grid which covers 23 different municipalities (~1500 Km2) and 190 surveyed sites. each site is a circle with a visible radius of 200 - 250 m. The spatial analysis of the diversity of plant genetic resources has been conducted with pre-fixed landscape units (size: 4 Km × 4 Km). Overall, 49 different woody long cycle (455 ancient cultivars) and 53 short cycle species (102 ancient cultivars) have been scored. Long cycle species exhibit higher cultivar richness than short cycle species. The analysis has recognized that pre-Columbian indigenous cultivars had not been displaced by the American species introduced after the 16th century. In addition, it is confirmed that small-scale poly-production, under conditions of spatial niche variation, is associated to high species and cultivar richness. The mapped realized niche, for both pre- and post-Columbian genetic resources, includes the actual genetic reserve suitable for in situ conservation of plant agro-biodiversity. Agro-biodiversity models, drivers of genetic erosion, and realistic responses to genetic erosion are outlined.

关键词： Genetic Reserve Genetic Resource Realized Niche Richness Spatial Analysis

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effect of dietary magnolia bark extract supplementation in finishing pigs on the oxidative stability of meat

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Journal of Animal Science and Biotechnology 2023年第1期14卷 200-211页

作者： Ruggero Menci Hajer Khelil‑Arfa Alexandra Blanchard Luisa Biondi Marco Bella Alessandro Priolo Giuseppe Luciano Antonio Natalello dipartimento di agricoltura Alimentazione e Ambiente(Di3A)University of CataniaVia Valdisavoia 595123 CataniaItaly. Pancosma ADM A One Business Center1180 RolleSwitzerland.

Background:Magnolia bark extract(MBe)is a natural supplement with antioxidant,anti-inflammatory,and antimicrobial *** properties suggest that the dietary supplementation in livestock could improve the quality of ***,the aim of this study was to investigate,for the first time,the effect of dietary MBe supplementation(0.33 mg/kg)in finishing pigs on the oxidative stability of *** stability is of paramount importance for pork,as it affects storage,retail,and consumer *** the purpose,the fatty acid profile,cholesterol,fatsoluble vitamins,antioxidant enzymes(catalase,glutathione peroxidase,and superoxide dismutase),non-enzymatic antioxidant capacity(TeAC,FRAP,and Folin-Ciocalteu assays),color stability,and lipid stability of pork were ***:Concerning carcass characteristics,dietary MBe did not affect cold carcass yield,but reduced(P=0.040)the chilling weight *** meat from pigs fed MBe had a lower(P=0.031)lightness index than the control *** effect on intramuscular fat,cholesterol,and fatty acid profile was *** MBe did not affect the content of vitamin e(α-tocopherol andγ-tocopherol)in pork,whereas it reduced(P=0.021)the retinol *** catalase activity was 18%higher(P=0.008)in the meat from pigs fed MBe compared with the control *** MBe supplementation reduced(P=0.039)by 30%the thiobarbituric acid reactive substances(TBARS)in raw pork over 6 d of aerobic refrigerated ***,no effect on lipid oxidation was observed in cooked ***,the meat from pigs fed MBe reduced Fe3+-ascorbate catalyzed lipid oxidation in muscle homogenates,with a lower(P=0.034)TBARS value than the control group after 60 min of ***:dietary MBe supplementation in finishing pigs delayed the lipid oxidation in raw *** effect was combined with an increased catalase *** results suggest that dietary MBe could have implications for improving the shelf-life of pork

关键词： Antioxidant capacity Antioxidant enzyme Color Fatty acid Lipid oxidation Plant extract Pork Shelf-life TBARS Vitamin

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