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Breeding for specific bioregions: a genotype by environment study of horticultural and nutritional traits integrating breeder and farmer priorities for organic broccoli cultivar improvement

Renaud, E.N.C; Lammerts van Bueren, E.T.; Jiggins, J.; Maliepaard, C.; Paulo, J.; Juvik, J.A. and Myers, J.R. (2010) Breeding for specific bioregions: a genotype by environment study of horticultural and nutritional traits integrating breeder and farmer priorities for organic broccoli cultivar improvement. In: Breeding for Resilience: a strategy for organic and low-input farming systems?, pp. 124-127.

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Summary

The genotype by environment interaction study of broccoli, amongst others demonstrates that traits of a cultivar are sometimes ranked differently when grown in an organic production system compared to a conventional system. This has strong implications for breeding strategies. The breeders interviewed acknowledged that more attention on abiotic and biotic stress resistance in a broccoli breeding programme is needed which is in accordance with the farmers' varietal requirements. The first findings of the field trials show that cultivar performance is influenced by season and region, and differences in treatment (organic versus conventional management). The field trials showed that there are cultivars with broad adaptation such as "Green Goliath". These cultivars performed across locations, seasons and treatments within the sub-top group, however, organic farmers would benefit more from cultivars specifically adapted to their region and season. The trial results showed a wide range of glucosinolate levels. Glucoraphanin was very genotype dependent, while glucobrassicin and neoglucobrassicin were more influenced by abiotic and biotic environmental factors. Therefore, there are opportunities for nutritional performance enhancement under organic conditions which would provide an added value to the product quality with respect to human and plant health. Further elaboration of the dataset will contribute to the design of regional breeding strategies for improved broccoli cultivars for the organic market.


EPrint Type:Conference paper, poster, etc.
Type of presentation:Paper
Keywords:Brassica oleracea, farmer cultivar requirements, genotype by environment by management interaction, regional adaptation, glucosinolates
Subjects: Crop husbandry > Breeding, genetics and propagation
Research affiliation: Netherlands > Louis Bolk Institute
Netherlands > Wageningen University and Research Centre WUR > Plant Research International PRI
USA > Other organizations
Deposited By: Steinbuch, Luc
ID Code:18927
Deposited On:17 Jun 2011 07:03
Last Modified:20 Jun 2011 06:38
Document Language:English
Status:Published
Refereed:Not peer-reviewed

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