1,721,014 research outputs found
La produzione orticola italiana per la moderna distribuzione e le nuove esigenze di mercato.
No full textAfter-Ripening and Stratification Improve the Germination of the Cakile maritima Scop. (Brassicaceae) from the Apulia Region, Italy
No full textUnderstanding seed germination is crucial for refining the propagation techniques of Cakile maritima, a wild halophyte species with significant potential for biosaline agriculture. However, research on seed germination within intact fruits of this species is limited. Four trials were conducted to study the seed germination of a population from the Apulia region. The focus was on seeds that had undergone after-ripening for 3 years (20AR(3)) or 2 years (20AR(2)) (both collected in 2020), or 1 year (22AR(1)) (collected in 2022), and freshly harvested seeds in 2022 (22AR(0)) and 2023 (23AR(0)). The seeds were either incubated as naked or moist-stratified within intact fruits. A portion of 2022 AR(0) siliques was submerged in saline water before stratification. The naked seeds collected in 2022 and 2020 (22AR(0) and 20AR(2)) did not germinate, whereas a portion of the 23AR(0) (67%), 20AR(3), and 22AR(1) (45%, irrespective of after-ripening) lots quickly (T-50 = 3.5 days) germinated, underlining a lower dormancy level for seeds harvested or dry stored in 2023. Seed germination in the intact fruits was lower than the naked seeds, confirming the role of the pericarp in inducing seed dormancy. Stratification of the shelled seeds was much more effective in improving the germination time (140 days) and levels in the 23AR(0) (81%), 20AR(3), and 22AR(1) (66%, irrespective of after-ripening) lots than in the 22AR(0) (34%) and 20AR(2) (61%) ones, which required 240 days to germinate. The saline solution imbibition of fruit seems only to delay the occurrence of the maximum emergence. The physiological seed dormancy of this C. maritima population has been proven, which may be variable in depth according to the year of fruit collection, ranging from intermediate to non-deep
Confronto tra sistemi di coltivazione di carosello e barattiere in serra. II. Aspetti qualitativi
No full textMorpho-biometrical, nutritional and phytochemical characterization of carrot landraces from Puglia region (southern Italy)
Full text linkThe explorations as a part of the regional BiodiverSO Programme of vegetable genetic resource rescue revealed that in the arenili (sandy shores) of “Salterns of Margherita di Savoia” (SMS), a coastal landscape area of Puglia region (southern Italy), along the commercial genotypes of small rooting species, landraces are still cultivated. The morpho-biometrical, nutritional and phytochemical properties of two carrot landraces (“Carota a punta lunga” and “Carota a punta tonda”) and a commercial carrot hybrid (“Presto”) collected from the SMS area are examined. The study highlighted that the pedological conditions of the arenili of the SMS area are the main driving force in controlling the nutritional and nutraceutical characteristics of carrot, conferring to genotypes grown in this area a high profile in comparison with literature data. In the site of cultivation of arenili, a large variability in the morpho-qualitative traits emerged among carrot genotypes. “Carota a punta tonda” stands for a promising genotype being very rich in phenols (209.8 mg kg-1 fw) (mainly di-caffeic acid derivative and chlorogenic acid), Β-carotene (21,512 μg 100 g-1 fw), and high antioxidative proprieties. “Carota a punta tonda” could be considered as a healthy product for consumers and also amenable to selection for breeding purpose. Increasing the knowledge about nutritional and nutraceutical properties of local landraces may push the preference of consumers beyond the local community and, at the same time, farmers can be stimulated to continue their cultivation. Thus, the promotion of their on-farm/in situ conservation (cultivation) could represent an efficient strategy for agro-biodiversity preservation
Post-harvest performance of ready-to-eat wild rocket salad as affected by growing period, soilless cultivation system and genotype
No full textThe present study focuses on the effect of growing period (autumn-winter and winter-spring), soilless cultivation system (floating system and ebb and flow system) and genotype (‘Naturelle’ and ‘Nature’) on the post-harvest performance of wild rocket salad. Changes in bio-physical characteristics (weight losses, main colour indices, the concentration of dry matter and chlorophylls), physiological characteristics (relative water content, osmotic potential, electrolytic leakage), antioxidant compounds (vitamin C, phenolic compounds, carotenoids), glucosinulates, and activity of antioxidant enzymes (CAT-catalase; APX-ascorbate peroxidase; SOD-superoxide dismutase; GR-glutathione reductase) were evaluated in wild rocket salad after 7 days of cold storage. Wild rocket salad grown under winter spring conditions and in a floating system was more prone to post-harvest quality decay as highlighted by higher electrolyte leakage and osmotic potential, and lower relative water content, greater weight losses due to respiration activity, and a rapid breakdown of colour to yellowness. A higher shelf-life of the product grown under less photo-thermal stressing condition (autumn-winter cycle) was attributable to less physiologically stressed raw material and to a rise in non-enzymatic antioxidant compounds, namely carotenoids, phenols, and vitamin C (ascorbic acid), all effective at contrasting oxidative stress during storage. The higher shelf-life of the product grown in an ebb and flow system (lower losses of mass and lower visual decay) and of ‘Nature’ (a higher retention of the green colour) under autumn-winter conditions, seems to be imputable both to a higher efficiency of antioxidant enzyme activity (APX and CAT) and to a greater content of antioxidant compounds, mainly carotenoids. The role of individual glucosinolates in delaying senescence was only observed as a genotype-specific response of ‘Nature’ to the root oxygen limitation occurring with the floating system
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