The Productive Capacity and Quality of Several Walnut Cultivars (Juglans regia L.) Grown in North Oltenia, Romania
Romania has tradition in walnut culture and favorable climatic conditions. In order to establish the suitable cultivars for growing into the Northern Oltenia area several walnut cultivars of different origin were evaluated for productivity and fruits quality. Twelve Romanian cultivars and two foreign ones with terminal bearing and 10 cultivars with lateral bearing from France and U.S.A. were studied during 18 years of yielding with no irrigation. The group of lateral bearing cultivars proved to be more productive in the environmental conditions of the study area, the highest average yields were recorded for ‘Vina’ (3.64 t ha-1), ‘Hartley’ (3.59 t ha-1), ‘Ferjean’ (3.52 t ha-1), ‘Payne’ (3.45 t ha-1), ‘Pedro’ (3.39 t ha-1), etc. The most productive terminal bearing cultivars were: ‘Jupânești’ (2.88 t ha-1), ‘Valcor’ (2.77 t ha-1), ‘Franquette’ (2.71 t ha-1), ‘Valcris’ (2.62 t ha-1), etc. Although the lateral bearing cultivars emphasized good yields, their extensive culture into the areas with continental type of climatic conditions should be further analysed. The walnut kernel and oil content show that the cultivars are very similar regarding chemical composition when growing under same conditions in Northern Oltenia.
Aletà N, Vilanova A, Tomàs E, Guàrdia M (2014). Frost resistance in seven commercial walnut cultivars. Acta Horticulturae 1050:389-393.
Aslamarz AA, Vahdati K, Rahemi M, Hassani D (2010). Cold-hardiness evaluation of persian walnut by thermal analysis and freezing technique. Acta Horticulturae 861:269-272.
Avanzato D, McGranahan GH, Vahdati K, Botu M, Iannamico L, Van Assche J (2014). Following walnut footprints (Juglans regia L.). cultivation and culture, folklore and history, traditions and uses. International Society for Horticultural Science 17:3-4.
Botu M (1998). Nut crops situation in Romania. FAO Nucis Newsletter 7:23-24.
Botu M, Botu I, Achim G, Stancu A, Alabedallat YFJ (2017). Evaluation of differentiation between Romanian walnut cultivars and those with lateral bearing from warmer areas. Annals of the Academy of Romanian Scientists Series on Agriculture, Silviculture and Veterinary Medicine Sciences 6(2):5-14.
Botu M, Achim G (1994). Primele rezultate obţinute în selecţia unor elite într-o populaţie de nuc din zona Subcarpaţilor sudici [First results obtained in selection of some elites from a walnut population from Southern SubCarpathian area]. Primul Simpozion “Trecut, prezent şi viitor în cultura nucului în România”, Craiova (Romania), Dec. 1994, pp 23-36.
Burke MJ, Gusta LV, Quamme HA, Weiser CJ, Li PH (1976). Freezing and injury in plants. Annual Review of Plant Physiology 27(1):507-528.
Charrier G, Poirier M, Bonhomme M, Lacointe A, Améglio T (2013). Frost hardiness in walnut trees (Juglans regia L.): How to link physiology and modelling? Tree Physiology 33 (11):1229-1241.
DSAASTAT ver. 1.514 (2015). www. casaonofri.it /repository /DSAAST AT.xls.
FAO Stat Database (2018). www.fao.org.
Gandev S (2013). Winter hardiness of reproductive organs of the walnut cultivars Izvor 10, Lara and Fernor at extreme low temperatures. Bulgarian Journal of Agricultural Science 19(5):1068-1070.
Grimo E (1979). Carpathian (Persian) walnuts. In: Jaynes RA (Ed). Nut tree culture in North America. Northern Nut Growers Association, Hamden, Connecticut, pp 74-83.
Onofri A (2007). Routine statistical analyses of field experiments by using an Excel extension. Proceedings 6th National Conference Italian Biometric Society: “La statistica nelle scienze della vita e dell’ambiente”, Pisa, 20-22 June 2007, pp 93-96.
Popescu R, Costinel D, Geana EI, Botoran OR, Ionete RE, Alabedallat YFJ, Botu M (2016). Isotopes used in comparing indigenous and international walnut (Juglans regia L.) varieties. ICAEFBS 2016: 18th International Conference on Agricultural Engineering, Food and Beverage Systems. World Academy of Science, Engineering and Technology. International Journal of Nutrition and Food Engineering 10(12).
Rubel F, Kottek M (2010). Observed and projected climate shifts 1901-2100 depicted by world maps of the Köppen-Geiger climate classification. Meteorologische Zeitschrift 19(2):135-141.
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