references880: Virulence in Puccinia triticina for durum wheat cultivar creso and other durum wheat cultivars carrying resistance gene Lr14a in France (2010)

Title

Virulence in Puccinia triticina for durum wheat cultivar creso and other durum wheat cultivars carrying resistance gene Lr14a in France.

Pub Year

2010

Periodical, Full

Plant Disease

Volume

Issue

Start Page

1068

ISSN/ISBN

0191-2917

Accession Number

CABI:20103257848

Abstract

Durum wheat [Triticum durum] cv. Creso has been mentioned as having durable resistance to leaf rust (caused by P. triticina [P. recondita]). However, an average final disease level of 70S on the modified Cobb scale was scored on Creso across three locations in inoculated field trials in France during 2009. A mixture of two durum wheat leaf rust isolates commonly found in France was used for the inoculation, one was virulent on Lr23 and the other was avirulent on this gene. On cv. Llareta Inia and breeding line Somateria, both of which carry the resistance gene Lr14a, the average final disease levels were 95S and 80S, respectively. Creso, Llareta Inia and Somateria registered average final disease levels of 0, 10S and 1.0, respectively, in field trials inoculated with race CBG/BP in 2009 at two locations in Mexico (Ciudad Obregon and El Batan). Virulence for Lr14a in durum wheat leaf rust populations was already mentioned to be present in France since 2000. It has been suggested that the resistance of Creso, which has remained durable in Italy since 1975, could be due to a gene close to but different from Lr14a.

Notes

PT: J

Source Type

Print(0)

Output Language

Unknown(0)