Articles
THE INFLUENCE OF ECOLOGICAL CONDITIONS AND GENOTYPE ON WALNUT YIELD NORTH OF OLTENIA – ROMANIA
Article number
1050_36
Pages
271 – 276
Language
English
Abstract
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 (ungrafted) 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°C 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%.
Since most walnut trees grown in this area are natural hybrids (ungrafted) 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°C 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%.
Publication
Authors
M. Botu, G. Achim, S. Cosmulescu, T. Tsampas, I. Botu
Keywords
Juglans regia, walnut, cultivars
Online Articles (57)