
TY  - JOUR
A1  - Munns, R. 
A1  - Hare, R. A. 
A1  - James, R. A. 
A1  - Rebetzke, G. J. 
T1  - Genetic variation for improving the salt tolerance of durum wheat
JF  - Australian Journal of Agricultural Research
JO  - Aust. J.  Agric. Res.
Y1  - 1999
VL  - 51
IS  - 1
SP  - 69
EP  - 74
KW  - salinity, sodicity, sodium, Triticum turgidum.
UR  - https://doi.org/10.1071/AR99057 
N2  - Durum wheat (AB genomes) is more salt-sensitive than bread wheat (ABD genomes), a feature that restricts its expansion into areas with sodic or saline soils. Salt tolerance in bread wheat is linked with a locus on the D genome that results in low Na+ uptake and enhanced K+/Na+ discrimination. In order to introduce salt tolerance into current durum wheats from sources other than the D genome, a search for genetic variation in salt tolerance was made across a wide range of tetraploids representing 5 Triticum turgidum sub-species (durum, carthlicum, turgidum, turanicum, polonicum). Selections were screened for low Na+ uptake and enhanced K+/Na+ discrimination. This was assessed in seedlings grown in 150 m&#x041C; NaCl with supplemental Ca2+, by measuring the Na+ and K+ accumulated in the blade of a given leaf over 10 days. Large and repeatable genetic variation was found. Low Na+ accumulation and high K+/Na+ discrimination of similar magnitude to that of bread wheat was found in the sub-species durum. These selections have the potential for improving salt tolerance in durum wheat breeding programs. 
ER  -

