Yield and bulb quality of storage onion cultivars as affected by farming system and nitrogen dose

Golubkina, Nadezhda; Amalfitano, Carmine; Sękara, Agnieszka; Tallarita, Alessio; Pokluda, Robert; Stoleru, Vasile; Cuciniello, Antonio; Агафонов, А. Ф.; Kalisz, Andrzej; Hamburdă, S. B.; Caruso, Gianluca

doi:10.1016/j.scienta.2021.110751

Cited by 11 publications

(5 citation statements)

References 52 publications

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“…Two onion genetic resources had very low dry matter content (<10 °Brix), while in seven onion genetic resources it was very high (>13 °Brix). Golubkina et al (2022) reported much lower dry matter contents (6.6 -8.2 °Brix) in 11 onion varieties grown organically and conventionally in southern Italy. The onion genetic resources from Spain also had lower dry matter content (average 8.8 °Brix) than our data (Mallor et al, 2011), while the Greek onion genotypes ranged from 10.0 °Brix to 14.0 °Brix (Petropoulos et al 2015).…”

Section: Resultsmentioning

confidence: 91%

Morphological diversity of onion genetic resources at the Agricultural Institute of Slovenia

Sinkovič,

Škof,

Pipan

et al. 2023

AGR

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Onion is an important vegetable crop grown for its pungent bulbs and aromatic leaves. Onion genetic resources collected in the Slovenian Plant Gene Bank at the Agricultural Institute of Slovenia were evaluated for the first time using various morphometric traits. Using the prescribed descriptors (UPOV, CPVO) for Allium cepa spp., a collection of 61 onion accessions and varieties grown in the experimental fields of the Infrastructure Centre Jablje in 2022 was described. For each onion genetic resource, a total of thirteen quantitative (numerical) and qualitative descriptors were evaluated on the bulbs: bulb size, bulb height, bulb diameter, ratio height/diameter, position of maximum diameter, width of the neck, shape in longitudinal section, shape of stem end, shape of root end, base colour of dry skin, intensity of base colour of dry skin, coloration of epidermis of fleshy scales, and dry matter content. The results showed significant differences between onions in the collection in terms of bulb size (73.7 ± 26.0 g), bulb height (46.3 ± 14.2 mm), bulb diameter (36.7 ± 6.8 mm), bulb shape (predominant transverse medium elliptic), and colour of dry skin (brown, pink, red, purple). The highest coefficients of variation were observed for bulb size (35.3%) and height/ diameter ratio (32.6%) and the lowest for dry matter content (8.6%). The data obtained and the variability of the traits studied indicate that these onion accessions require further genetic analysis to identify the best candidates for future breeding programmes.

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Section: Resultsmentioning

confidence: 91%

Morphological diversity of onion genetic resources at the Agricultural Institute of Slovenia

Sinkovič,

Škof,

Pipan

et al. 2023

AGR

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“…On the other hand, attention should be paid to the fact that even the lowest bark AOA values are higher or not different from the correspondent parameters recorded in popular vegetables such as parsley (AOA 44–68 mg GAE g −1 d.w.) [ 17 ], tomatoes (18–23 mg GAE g −1 d.w.) [ 18 ], and onion bulbs (34–58 mg GAE g −1 d.w.) [ 19 ], which proves the expedience of tree bark utilization as a significant source of natural antioxidants. The results presented below are mean values of antioxidant status for bark overall, including the cambium, phloem, and periderm due to difficulties separating these components from rather small tree branches.…”

Section: Resultsmentioning

confidence: 99%

Evaluation of Factors Affecting Tree and Shrub Bark’s Antioxidant Status

Golubkina

Плотникова

Lapchenko³

et al. 2022

Plants

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The importance of using the barks of trees and shrubs as powerful natural antioxidants suggests the necessity to evaluate the effect of different environmental factors on bark extracts’ quality. The determination of total antioxidant activity (AOA) and polyphenol content (TP) in the bark of 58 tree and shrub species from 7 regions differing in mean annual temperature, insolation, humidity, salinity level, and altitude was performed. The above stress factors positively affected bark AOA but did not have a statistically significant effect on TP. The bark of trees grown in the seashore proximity was characterized by significantly higher AOA than samples gathered in other areas, similarly to the trees grown at high altitude. The bark antioxidant status of 18 species was described for the first time. New sources of powerful antioxidants were represented by the ornamental shrubs Cornus sanguinea and Cornus alba, which showed the highest AOA (169–171 mg GAE g−1 d.w.). Among the typical halophytes, Calligonum and Tamarix had high AOA (172 and 85 mg GAE g−1 d.w.), while in the bark of tamarisk, an Se accumulator, an Se concentration of about 900 µg kg−1 d.w. was recorded. A significant positive correlation was found between leaves and bark AOA in the Karadag Nature Reserve’s deciduous trees (r = 0.898, p < 0.01). The relationship between bark AOA and TP was highly significant (r = 0.809; p < 0.001) for all samples except the mountainous ones. The results of the present research revealed new opportunities in successive bark utilization.

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“…Nitrogen fertilization is one of the agronomic techniques that most influences the yields and the quality of agricultural productions; it is important to supply the correct quantities of nitrogen in relation to each type of crop to satisfy nutritional needs and maximize production [29][30][31]. In species that need high amounts of nitrogen such as onions, it is important to maximize the nutrient use efficiency to obtain higher yields and improve crop quality and, at the same time, to avoid nitrogen dispersion in the soil and risks for the ecosystem and human health [31][32][33].…”

Section: Discussionmentioning

confidence: 99%

Planting Date and Different N-Fertilization Rates Differently Modulate Agronomic and Economic Traits of a Sicilian Onion Landrace and of a Commercial Variety

et al. 2022

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The onion is one of the most widespread bulb vegetables worldwide. Onion cultivation is common in Sicily, as is the use of local genotypes. Cultivation practices are of particular interest in optimizing yield, quality, and profits. The aim of this study was to assess the agronomic response of a Sicilian landrace (Bianca Calda di Comiso, coded L1) and a commercial variety (Bianca di Maggio, coded V1) to different planting dates and N fertilization rates. An economic appraisal was also performed. The two genotypes were assessed using an experimental split-split-plot design with four levels of nitrogen rates (0, 80, 160, and 220 kg N ha−1) and two different planting dates (8 October 2005 to 9 October 2006 for the early planting date, and 27 December 2005 to 30 December 2006 for the traditional planting date). The marketable yield and production parameters were significantly influenced by the nitrogen dose: higher doses led to a higher total yield, with yield peaks above 60 t ha−1 and the marketable yield ranging from 23% to 54%. Simultaneously, decreases in the firmness (from 7% to 19%) and scale content (from 1% to 3%) were also reported. The L1 landrace showed a higher production than the V1 variety. The crop year did not significantly affect the results, and the traditional planting date appeared to be the most suitable choice in obtaining the best agronomic response. Economic analysis showed that the L1 landrace, with high-N application treatments, produced greater net benefits and marginal rates of return. Thus, the L1 landrace exposed to the highest dosages of nitrogen (160 or 220 kg ha−1) and transplanted during the traditional planting period is the best choice from agronomic and economic points of view.

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Yield and bulb quality of storage onion cultivars as affected by farming system and nitrogen dose

Cited by 11 publications

References 52 publications

Morphological diversity of onion genetic resources at the Agricultural Institute of Slovenia

Morphological diversity of onion genetic resources at the Agricultural Institute of Slovenia

Evaluation of Factors Affecting Tree and Shrub Bark’s Antioxidant Status

Planting Date and Different N-Fertilization Rates Differently Modulate Agronomic and Economic Traits of a Sicilian Onion Landrace and of a Commercial Variety

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