The Influence of Ecological Conditions and Genotype on Walnut Yield North of Oltenia-Romania
Walnut culture in Romania and particularly in Oltenia has historical, traditional and economic importance.Since most walnut trees grown in this area are natural hybrids (ungrafled) their yield and quality are variable and not desirable for commercial production.Successful walnut production will require cultivars suitable for this area.More than 26 walnut cultivars are native to Romania and several others have been introduced from foreign countries.This study investigates the horticultural performance of 10 native and eight introduced walnut cultivars planted in the North of Oltenia region of Romania.Data were collected from 2006 to 2012.During the 7-year study, the minimum temperature varied from-7.6 to -22.7℃ and the annual rainfall varied from 493 to 808 mm.Walnut yield varied from 1.85 to 2.56 t/ha for terminal bearing cultivars and 2.15 to 3.15 t/ha for lateral bearing cultivars with no supplemental water from irrigation.The influence of genotype (G), environment (E) and their interaction (G×E) on walnut yield using estimated and expected variances is presented.The influence of the genotype on walnut yield varied from 43.9% for terminal bearing cultivars and 42.2% for lateral bearing cultivars.The environment contributed with 24.44 and 29.1% respectively and the G×E interaction with 12.22 and 14.6%.
Juglans regia walnut cultivars
M.Botu G.Achim S.Cosmulescu T.Tsampas I.Botu
University of Craiova,Faculty of Agriculture and Horticulture,Department of Horticulture and Food Sc University of Craiova,Fruit Growing Research and Extension Station (SCDP) V(a)lcea,Str.Calea lui Tra
国际会议
The 7th International Walnut Symposium(第七届世界核桃大会)
山西汾阳
英文
271-276
2013-07-20（万方平台首次上网日期，不代表论文的发表时间）