Abstract
Thirty-six lentil varieties were evaluated under organic and conventional environment for three consecutive years in order to see whether the promising genetic material for an organic plant breeding program are different from those of a conventional system. The genetic material studied originated from various countries. In the conventional trial plots standard cultural practices (P mineral fertilization & pest control) were applied throughout the growing season, while in the organic ones no fertilizers or pest agrochemicals were applied. Significant regression, but of low value, between grain yield ranking and earliness or harvest index ranking was detected. Combined ANOVA indicated significant differences between genotypes, years, environments and genotype × environmental interactions (GEI). It was observed that under conventional management most of the genotypes had a higher yield compared to the organic one. The mean grain yield ranking of the genotypes in each of the environments revealed that some of the genotypes occupied the same ranking position at both the organic and the conventional environment (non-crossover GEI), while others exhibited a significant alteration in their ranking (crossover GEI) under the two environments. Crossover GEI and non-cross over GEI revealed two types of lentil varieties. Varieties with specific adaptation and varieties with broad adaptation. It was concluded that grain yield was in general higher when lentil varieties were grown under a conventional environment compared to the grain yield produced under an organic environment. Yet, there are lentil genotypes with a higher yielding ability under the organic management and therefore should be targeted by the breeder.
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Abbreviations
- P2O5 :
-
Phosphorus pentoxide
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Acknowledgments
Authors would like to acknowledge Dr. Costas Iliadis, director of Fodder Crops and Pastures Institute, for valuable advices during the experimental period. This work was supported by grants from the National Agriculture Research Foundation of Hellenic Ministry of Agriculture.
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Vlachostergios, D.N., Roupakias, D.G. Response to conventional and organic environment of thirty-six lentil (Lens culinaris Medik.) varieties. Euphytica 163, 449–457 (2008). https://doi.org/10.1007/s10681-008-9712-7
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DOI: https://doi.org/10.1007/s10681-008-9712-7