Adaptability to organic farming of lentil (Lens culinaris Medik.) varieties developed from conventional breeding programmes
D. N. Vlachostergios1, A. S. Lithourhidis2 and D. G. Roupakias3
The development of organic agriculture has raised the demand for crop varieties well-adapted to organic farming systems. Most of the varieties presently cultivated in organic agriculture were developed from conventional breeding programmes.
The objective of the present work was to study the adaptability to organic farming systems of lentil (Lens culinaris Medik.) varieties developed from conventional breeding programmes. Twenty varieties were evaluated over five environments under organic and conventional farming systems from 2005 to 2007.
Genotype×system interactions (GSI) for grain yield were significantly different in four out of the five environments and GSI explained 0.03–0.17 of the variance. Spearman's rank correlation index of the 20 varieties between the conventional and organic system ranged from 0.27 to 0.93 in the five environments. Direct selection of the top five varieties in organic systems resulted in significantly higher grain yields than indirect selection in one out of the five environments. However, among the top five varieties, the highest yielding varieties under conventional farming systems were not always the highest yielding varieties under organic farming systems.
These results indicate that the demands of organic agriculture for yield performance could be only partially satisfied by varieties developed under conventional breeding programmes.
Journal of Agricultural Science (2011) 149: 85-93
Author Locations and Affiliations
(1) National Agricultural Research Foundation (NAGREF), Fodder Crops and Pasture Institute, 413 35 Larissa, Greece
(2) Department of Agronomy, Aristotle University Farm of Thessaloniki, 570 01 Thermi, Greece
(3) Department of Genetics and Plant Breeding, Aristotle University of Thessaloniki, 541 24 Thessaloniki, Greece
Posted August 2011