@article{MTMT:31665327, title = {Temporal Changes and Correlations between Quality Loss Parameters, Antioxidant Properties and Enzyme Activities in Apricot Fruit Treated with Methyl Jasmonate and Salicylic Acid during Cold Storage and Shelf-Life}, url = {https://m2.mtmt.hu/api/publication/31665327}, author = {Ezzat, Ahmed and Hegedűs, Attila and Szabó, Szilárd and Ammar, Amin and Szabó, Zoltán and Nyéki, József and Csengőné Molnár, Bianka Szilvia and Holb, Imre}, doi = {10.3390/app10228071}, journal-iso = {APPL SCI-BASEL}, journal = {APPLIED SCIENCES-BASEL}, volume = {10}, unique-id = {31665327}, abstract = {The apricot storability is one of the largest challenges, which the apricot industry has to face all over the world; therefore, finding options for prolonging fruit quality during cold storage (CS) and shelf-life (SL) will help to decrease postharvest losses of apricot. The aim of this apricot fruit work was to study the temporal changes and correlations of 10 quality parameters (quality losses, antioxidant properties and enzyme activities) in the postharvest treatments of methyl jasmonate (MeJA) and salicylic acid (SA) under 1 degrees C CS (7, 14 and 21 days) and 25 degrees C SL (4 and 8 days after the 21-day CS) treatments. MeJA and SA significantly decreased the quality loss of chilling injury (CI) and fruit decay (FD) at all dates for both storage conditions. MeJA- and SA-treated fruits increased total antioxidant capacity (TAC), total soluble phenolic compounds (TSPC) and carotenoids contents (TCC) at all dates of both storage treatments. In contrast, the ascorbic acid content (AAC) increased only until days 14 and 4 in the CS and SL treatments, respectively. Among enzyme activity parameters, the activities of phenylalanine ammonia-lyase (PAL), peroxidase and superoxide dismutase (SOD) were significantly increased in the MeJA and SA treatments in all dates of both storage treatments. Catalase (CAT) activity increased in the SA and control treatments, while it decreased in the MeJA treatment in both storage conditions. In both the MeJA and the SA treatments, six pair-variables (FD vs. CI, PAL vs. CAT, PAL vs. SOD, TAC vs. SOD, TAC vs. FD, and AAC vs. CI) were significant in Pearson correlation and regression analyses among the 45 parameters pairs. Principal component analyses explained 89.3% of the total variance and PC1 accounted for 55.6% of the variance and correlated with the CI, FD, TAC, TSPC, TCC, PAL and SOD, indicating strong connections among most parameters. In conclusion, MeJA and SA are practically useful and inexpensive techniques to maintain quality attributes of CI, FD, TAC, TSPC, TCC, PAL, POD and SOD in apricot fruit during both CS and SL conditions.}, keywords = {enzyme activity; salicylic acid; Apricot; Methyl jasmonate; Postharvest quality; Antioxidant property}, year = {2020}, eissn = {2076-3417}, orcid-numbers = {Szabó, Szilárd/0000-0002-2670-7384} } @book{MTMT:3121474, title = {Meggy: A jövedelmező intenzív termesztés alapjaival}, url = {https://m2.mtmt.hu/api/publication/3121474}, isbn = {9789631265231}, editor = {Nyéki, József and Szabó, Tibor and Soltész, Miklós}, publisher = {ÉKASZ Szakmaközi Szervezet és Terméktanács; Újfehértói GyKSz Kht.}, unique-id = {3121474}, year = {2016} } @{MTMT:1177256, title = {A csonthéjas gyümölcsfajok és fajták téli fagytűrése}, url = {https://m2.mtmt.hu/api/publication/1177256}, author = {Thurzó, S and Nyéki, József and Drén, G and Dani, M and Racskó, J and Pedryc, Andrzej and Hermán, Rita and Soltész, M and Szabó, Zoltán}, booktitle = {XXII. Növénynemesítési Tudományos Nap: összefoglalók}, unique-id = {1177256}, year = {2016}, pages = {171-171} } @{MTMT:1177235, title = {Japánszilva (Prunus salicina Lindl.) és cseresznyeszilva (Prunus cerasifera Ehrh.) genotípusok S-lókuszának változékonysága}, url = {https://m2.mtmt.hu/api/publication/1177235}, author = {Pedryc, Andrzej and Ripka, Géza and SZABÓ, P and Nyéki, József and Szabó, Zoltán and Hegedűs, Attila and Halász, Júlia}, booktitle = {XXII. Növénynemesítési Tudományos Nap: összefoglalók}, unique-id = {1177235}, year = {2016}, pages = {143-143} } @book{MTMT:25076511, title = {Magyar Gyümölcsfajták}, url = {https://m2.mtmt.hu/api/publication/25076511}, isbn = {9789632866987}, author = {Apostol, J and Dénes, F and Dibuz, Erzsébet and Erdős, Z and Hermán, Rita and Kerek, M M and Kocsisné, Molnár G and Nyéki, József and Pedryc, Andrzej and Porpáczy, A and Soltész, Miklós and Surányi, Dezső and Szabó, T and Szabó, Z and Szani, Zs and Szentiványi, P and Tóth, Magdolna}, editor = {Soltész, M}, publisher = {Mezőgazda Kiadó}, unique-id = {25076511}, year = {2014}, orcid-numbers = {Tóth, Magdolna/0000-0002-9271-3010} } @article{MTMT:2721607, title = {Climatic indicator analysis of bloom time for sour cherries}, url = {https://m2.mtmt.hu/api/publication/2721607}, isbn = {9789462610071}, author = {Persely, Sz and Ertsey, Imre and Ladányi, Márta and Nyéki, József and Soltész, Miklós and Szabó, Z and Davarynejad, G H and Szabó, T}, doi = {10.17660/ActaHortic.2014.1020.35}, journal-iso = {ACTA HORTICULTURAE}, journal = {ACTA HORTICULTURAE: TECHNICAL COMMUNICATIONS OF ISHS}, volume = {1020}, unique-id = {2721607}, issn = {0567-7572}, year = {2014}, eissn = {2406-6168}, pages = {239-246}, orcid-numbers = {Ladányi, Márta/0000-0003-3114-8289} } @article{MTMT:2400224, title = {Influence of black hail nets on canopy size, reproductive potential and fruit characteristics of apple trees}, url = {https://m2.mtmt.hu/api/publication/2400224}, author = {Kocsisné Molnár, Gitta and Kocsis, László and D., van Maurik and Nyéki, József and Szabó, Zoltán and Soltész, Miklós}, journal-iso = {ACTA HORTICULTURAE}, journal = {ACTA HORTICULTURAE: TECHNICAL COMMUNICATIONS OF ISHS}, volume = {984}, unique-id = {2400224}, issn = {0567-7572}, year = {2013}, eissn = {2406-6168}, pages = {157-162} } @article{MTMT:2771779, title = {Are Organic Apples Really Healthier?}, url = {https://m2.mtmt.hu/api/publication/2771779}, author = {Nagy, Péter Tamás and Nyéki, József and Szabo, Z}, journal-iso = {ACTA HORTICULTURAE}, journal = {ACTA HORTICULTURAE: TECHNICAL COMMUNICATIONS OF ISHS}, volume = {933}, unique-id = {2771779}, issn = {0567-7572}, abstract = {As consumers' demand for organic fruits continues to increase, organic horticulture has increased worldwide. Proper nutrition management is a key factor in organic farms to produce healthy, well-developed and attractive fruits which meet consumers' demands. To achieve this goal organic farmers need to develop and improve their nutrition management. In this paper an organic and integrated apple plantation were compared to study their fruit quality parameters and to establish the similarities and differences between production systems. Sugars, organic acids, vitamin C and number of healthy fruit were studied in the same apple cultivars from an organic and an integrated orchard. Besides chemical analysis, an organoleptic survey was conducted to estimate consumer response. The results showed that fructose and sucrose were the major sugars and malic acid the predominant acid. From our data it was clear that fruit components such as acids and sugars were affected by cultivars more than production system. In addition, the organoleptic survey did not identify any differences between organic and integrated products. The majority of tasters preferred integrated fruit over organic fruit. In summary, organic farmers make more efforts to increase fruit productivity, quality and design but such increased efforts may not ensure consistent profit for Hungarian fruit growers due to market conditions.}, keywords = {QUALITY; Sugars; Malus x domestica; fruit quality; integrated and organic fruit growing}, year = {2012}, eissn = {2406-6168}, pages = {607-611} } @article{MTMT:2771778, title = {Comparative Study of Nutrient Availability in Integrated and Organic Apple Orchards}, url = {https://m2.mtmt.hu/api/publication/2771778}, author = {Nagy, Péter Tamás and Nyéki, József and Szabo, Z}, journal-iso = {ACTA HORTICULTURAE}, journal = {ACTA HORTICULTURAE: TECHNICAL COMMUNICATIONS OF ISHS}, volume = {933}, unique-id = {2771778}, issn = {0567-7572}, abstract = {Nowadays, there is an increasing interest in environmental friendly fruit growing systems. Regarding this, the most frequented environmentally-benign fruit management systems are the integrated and organic systems. Although there are several differences between these growing systems only few information is available about their nutritional aspects, mostly in eastern Europe. Our experimental site (eastern Hungary) gave excellent possibility to carry out a comparative study to investigate differences between these growing systems because the plantations are situated side by side. The aim of our two-year study was to compare the nutrient status of the soil-leaf-fruit system in integrated and organic apple management systems, and take an effort to improve nutrient supply in environmentally friendly apple orchards. For leaf and fruit analysis four cultivars were selected. A traditional Hungarian cultivar: 'Idared', and three resistant cultivars 'Rewena', 'Reanda' and 'Retina'. It was found that the seasonal patterns of examined nutrients were similar in both growing systems but the availability of these nutrients was more stable in the integrated orchard than in the organic one due to the fertilization management. Results suggested that applying chemical fertilizers in integrated orchards provided higher nutrient uptake, yield and resulted better fruit quality than in organic orchards where only natural nutrient sources are allowed. Detailed soil, leaf and fruit results are discussed in the paper.}, keywords = {Europe; CONVERSION; PLANT; soil quality; MANAGEMENT; Malus x domestica; FRUIT-QUALITY; Production systems; WASHINGTON-STATE; nutrient status and uptake; fruit growing management}, year = {2012}, eissn = {2406-6168}, pages = {227-231} } @book{MTMT:2386992, title = {Minőségi szilvatermesztés; 200 p.}, url = {https://m2.mtmt.hu/api/publication/2386992}, isbn = {9789634735922}, editor = {Nyéki, József and Soltész, Miklós and Szabó, Zoltán}, publisher = {DE Agrártudományi Centrum; DE ATC; DE AC}, unique-id = {2386992}, year = {2012} }