Yazar "Fernandez, J. A." seçeneğine göre listele

Listeleniyor 1 - 3 / 3
  • Küçük Resim Yok
    Öğe
    Agronomic Behaviour and Oxalate and Nitrate Content of Different Purslane Cultivars (Portulaca oleracea) Grown in a Hydroponic Floating System
    (Int Soc Horticultural Science, 2009) Kaskar, C.; Fernandez, J. A.; Ochoa, J.; Ninirola, D.; Conesa, E.; Tuzel, Y.; Tuzel, Y; Oztekin, GB; Meric, MK
    Purslane (Portulaca oleracea) is eaten extensively as a vegetable in soups and salads in the Eastern Mediterranean countries. It is an excellent source of omega-3 fatty acids, amino acids and vitamins. The objective of this study was to analyze the agronomic behaviour and the nitrate and oxalate content in several purslane cultivars grown in a hydroponic floating system. The followings cultivars were used: Two commercial cultivars ('Golden Purslane' from Tozer Seeds Company, 'C' from Pasa Seeds Company), one local Turkish accession (cv. '5') and three local Spanish accessions (215; 294; 298) from UPCT seedbank. Seeds were sown directly into 'styrofloat' trays on September 20, 2007. All the trays were placed in a growth chamber for one day, and then transferred to floatation beds located in a greenhouse. Trays were maintained floating permanently on fresh tap water. After three days, the water was replaced with nutrient solution of 8 mmol L-1 (NO3--N/ NH4+-N ratio; 60: 40). The duration of the cycle was 13 days. At the harvesting time, (when the most of the plants reached the five pairs of leaves stage) some agronomic parameters were measured and the nitrate and oxalate content were analyzed. cv. 'C' had better agronomic results reaching the highest plant height, number of leaves, leaf area and yield compared to other cultivars. On the other hand, cv. '5' was the worse cultivar in terms of agronomic parameters. cv. '215' showed the highest value of relative chlorophyll content while the Golden Purslane had the lowest. The lowest nitrate and oxalate content was found in the leaves of Turkish accession '5'. In general, cv. 'C' was the most productive cultivar, but it was less suitable for human consumption due to its high oxalate and nitrate content.
  • Küçük Resim Yok
    Öğe
    Current trends in protected cultivation in Mediterranean climates
    (Int Soc Horticultural Science-Ishs, 2018) Fernandez, J. A.; Orsini, F.; Baeza, E.; Oztekin, G. B.; Munoz, P.; Contreras, J.; Montero, J. I.
    Protected cultivation has rapidly expanded in many regions all over the world, particularly in those with mild winter climatic conditions. In this context, the greenhouse industry is continually developing new strategies and technologies to solve specific cultivation limitations, to reduce any related environmental impact and to adjust to new market requirements. It is for this reason that it is necessary to update the scientific knowledge of this industry. The characteristics of greenhouse production related to new developments in structures and climate control, crops, cultivation techniques, water and nutrient management and environmental issues, including life cycle assessment and integrated pest management, are the objective of this study. Overall, the main results of this review demonstrate that a great effort of innovation and research has been carried out by industry and researchers in order to cut production costs and to reduce the environmental impact of the most advanced greenhouse technologies while satisfying the requirements of consumers.
  • Küçük Resim Yok
    Öğe
    The effect of different fruiting temperatures on the yield and nutritional parameters of some wild and hybrid Hericium isolates
    (Elsevier, 2021) Atila, F.; Tuzel, Y.; Peksen, A.; Faz Cano, A.; Fernandez, J. A.
    Temperature has an important impact on the sporophore development of mushrooms. in particular, in some warm area or during summer season, temperatures above 20 degrees C may emerge as a limiting factor in Hericium spp. cultivation. The aim of this research was to assess the ability some isolates of Hericium spp. (Hericium erinaceus, H. coralloides and H.americanum) to produce fruitbodies at different temperatures (15, 20 and 25 degrees C). in addition, the effect of different fruiting temperatures on the yield parameters of Hericium spp. and the differences between some nutritional components in fruitbodies grown at different fruiting temperatures were also evaluated. Although some H. erinaceus isolates (He-Denizli, He-Erkel), H. americanum and H. coralloides formed pinheads and fruitbodies at 25 degrees C, other isolates tested in the study required lower temperatures (15 or 20 degrees C) for fruiting A noticeable decrease in the ash and protein content of all Hericium spp. isolates grown at 25 degrees C was verified. However, in general, macro-micro element content, antioxidant activity and phenolic content were not affected by fruiting temperatures. According to the results, some of the Hericium isolates tested in the study exhibited good potential for cultivation at 25 degrees C. Because of their ability to fruit with high yields under various temperature conditions, these isolates may be promising sources for breeding studies. Moreover, we have demonstrated that fruiting temperature is an important factor on yield parameters, protein and ash contents of Hericium spp.