Identification of a chemically induced point mutation mediating herbicide tolerance in annual medics (Medicago spp.).

ABSTRACT:

Background and aims

Sulfonylurea (SU) herbicides are used extensively in cereal-livestock farming zones as effective and cheap herbicides with useful levels of residual activity. These residues can persist beyond the cropping year, severely affecting legumes in general, and annual medics in particular, resulting in reduced dry matter production, lower seed yields and decreased nitrogen fixation. A strand medic cultivar, Medicago littoralis 'Angel', has been developed via chemical mutagenesis with tolerance to SU soil residues. Identifying the molecular basis of the observed tolerance was the aim of this study.

Methods

Two F(2) populations were generated from crosses between 'Angel' and varieties of intolerant M. truncatula, the male-sterile mutant tap and the cultivar 'Calip

SUBMITTER: Oldach KH 

PROVIDER: S-EPMC2710221 | biostudies-literature | 2008 May

REPOSITORIES: biostudies-literature