Assessing four-way mixtures of winter wheat cultivars from the performances of their two-way and individual components

Seven four-way bread wheat mixtures were compared to their components (individual cultivars and two-way mixtures) for septoria tritici blotch severity, grain protein content, and grain yield. Four-way mixtures and two-way mixtures performed better than the average of individual pure line components....

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Veröffentlicht in:European journal of plant pathology 2006-02, Vol.114 (2), p.163-173
Hauptverfasser: MILLE, B, BELHAJ FRAJ, M, MONOD, H, DE VALLAVIEILLE-POPE, C
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Sprache:eng
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Zusammenfassung:Seven four-way bread wheat mixtures were compared to their components (individual cultivars and two-way mixtures) for septoria tritici blotch severity, grain protein content, and grain yield. Four-way mixtures and two-way mixtures performed better than the average of individual pure line components. Disease severity and protein content were most influenced by mixtures, with mixture efficiencies being greater in the four-way than in the two-way mixtures. Performances of four-way mixtures in terms of diseased leaf area reduction, grain yield, 1000-grain weight, and grain protein content were better predicted by performances of two-way mixtures than by those of pure lines. Our results suggest that two-way mixtures should be screened to remove unfavourable cultivar pairs and those binary mixtures that show complementarity should be selected in order to construct four-way mixtures.
ISSN:0929-1873
1573-8469
DOI:10.1007/s10658-005-4036-0