Agronomic comparison of two sets of SSD barley lines differing for the ym4 resistance gene against barley mosaic viruses


  • Le Gouis, J. , Jestin, L. , Ordon, F. , De Froidmont, D. , Beghin, D. , Joseph, J. & Froidmont, F. (1999). Agronomic comparison of two sets of SSD barley lines differing for the ym4 resistance gene against barley mosaic viruses. Agronomie, 19: (2), 125-131.
Type Journal Article
Year 1999
Title Agronomic comparison of two sets of SSD barley lines differing for the ym4 resistance gene against barley mosaic viruses
Journal Agronomie
Recnumber 544
Volume 19
Issue 2
Pages 125-131
Date Feb
Endnote Keywords Hordeum vulgare, barley yellow mosaic virus, ym4 resistance gene|rust resistance|characters|qtl|
Abstract The ym4 gene has been extensively used in breeding for resistance against barley mosaic viruses. The objective of this study was to investigate whether resistant lines carrying this gene were lower yielding than susceptible lines derived from the same cross when grown on a disease-free soil. Eighteen susceptible and 18 resistant F7 lines derived from a three-way cross were grown over 2 years at four locations. In four out of eight trials, susceptible lines had on average a higher yield than resistant ones by 0.25 t ha(-1) (0 % humidity). In one trial, resistant lines significantly outyielded susceptible ones by 0.3 t ha(-1). In this case lodging was high and it was shown that susceptible lines were more susceptible to lodging. They also headed later (+1.4 days on average), were taller (+2.8 cm) and generally had a higher thousand kernel weight than resistant lines. Effect of the ym4 gene cannot easily be separated from possible effect of linked genes but this study clearly showed that selecting for ym4 can lead to indirect selection of unfavourable traits. ((C) Inra/Elsevier, Paris.).
Notes English Article AGRONOMIE 201FJ
Author address INRA, Lab Amerliorat Plantes, F-80200 Estrees Mons, France LE GOUIS, J, INRA, LAB AMERLIORAT PLANTES, DOMAINE DE BRUNEHAUT, F-80200 ESTREES MONS, FRANCE legouis@mons.inra.fr
Lien ://000080584100005
Authors Le Gouis, J. , Jestin, L. , Ordon, F. , De Froidmont, D. , Beghin, D. , Joseph, J. & Froidmont, F.