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Phyton (Buenos Aires)

versión On-line ISSN 1851-5657

Resumen

MIRAVALLES, M; BEAUFORT, V  y  MOCKEL, F. Relative susceptibility to blackpoint in durum wheat varieties of Argentina. Phyton (B. Aires) [online]. 2008, vol.77, pp. 263-273. ISSN 1851-5657.

Blackpoint incidence was assessed on grain from six durum wheat (Triticum durum Desf.) varieties grown during crop season 2004-05 at four sites, in the traditional durum wheat growing region of Argentina. Broad differences in grain discolouration were detected among sites and varieties, together with significant variety x site interactions. Among varieties, those with lower thousand grain weight and higher width-to-length ratio (proportionally shorter grains) showed less susceptibility to this disease than heavy/large grain varieties. Differences among sites in the levels of blackpoint incidence were also related to the physical attributes of grains revealing the strong influence of the environment on the occurrence of this defect. Some varieties performed inconsistently among sites, showing the need of further research involving more years of study, previous to advising of selected varieties to be grown in specific regions.

Palabras llave : Blackpoint; Durum wheat; Variety; Site of cultivation; Grain physical attributes.

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