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Wheat populations: parental performance and stability in organic and non-organic environments

Jones, H; Boyd, H. E.; Clarke, S; Haigh, Z. E. L and Wolfe, M (2008) Wheat populations: parental performance and stability in organic and non-organic environments. Poster at: Cultivating the Future Based on Science: 2nd Conference of the International Society of Organic Agriculture Research ISOFAR, Modena, Italy, June 18-20, 2008.

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Summary

Twenty winter wheat varieties used as parents in a half diallel crossing programme for the production of wheat populations were grown in field trials at two organic and two non-organic sites over three years in England. Yields of the varieties between the two non-organic sites were highly correlated, but less so between the two organic sites and between the non-organic and organic sites. At the non-organic sites, most of the variation in yield (60%) was due to varietal differences, whereas, at the organic sites, it was due largely to the effects of environment (79%), and genotypic variation only accounted for 9%. More detailed analysis, using AMMI (Additive Main effects and Multiplicative Interaction), allowed stricter comparisons among individual varieties. With the exception of the variety Deben, different varieties performed well in terms of yield and stability in the two systems. In particular, Tanker performed well in the non-organic trials, but was below average under organic conditions, whereas Renan gave the reverse response. The results indicate the importance of specific trials for non-organic and organic variety performance evaluation.


EPrint Type:Conference paper, poster, etc.
Type of presentation:Poster
Keywords:winter wheat, organic, non-organic, yield stability, populations
Subjects:"Organics" in general
Crop husbandry > Crop combinations and interactions
Crop husbandry > Breeding, genetics and propagation
Research affiliation: UK > Organic Research Centre (ORC) - Elm Farm
International Conferences > 2008: IFOAM OWC: Research Track / ISOFAR > 2.5 Plant breeding
Deposited By: Jones, Dr H
ID Code:13205
Deposited On:30 Sep 2008
Last Modified:12 Apr 2010 07:36
Document Language:English
Status:Published
Refereed:Peer-reviewed and accepted
Additional Publishing Information:This paper is published in the conference proceedings:
Neuhoff, Daniel; Halberg, Niels; Alfldi, Thomas; Lockeretz, William; Thommen, Andreas; Rasmussen, Ilse A.; Hermansen, John; Vaarst, Mette; Lck, Lorna; Carporali, Fabio; Jensen, Henning Hgh; Migliorini, Paola and Willer, Helga, Eds. (2008) .Cultivating the Future Based on Science. Proceedings of the Second Scientific Conference of the International Society of Organic Agriculture Research (ISOFAR), held at the 16th IFOAM Organic World Congress in Cooperation with the International Federation of Organic Agriculture Movements (IFOAM) and the Consorzio ModenaBio, 18 . 20 June 2008 in Modena, Italy.. International Society of Organic Agriculture Research (ISOFAR), c/o IOL, DE-Bonn, Research Institute of Organic Agriculture FiBL, CH-Frick. http://orgprints.org/13672 and http://orgprints.org/13674

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