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Chromosomal Location of the Russian Wheat Aphid Resistance Gene, Dn5

^a Dep. of Genetics, Univ. of Stellenbosch, Private Bag X1, Matieland 7602, South Africa
^b Centraalbureau voor Schimmelcultures, P.O. Box 85167, 3508 AD Utrecht, the Netherlands
^c (retired), PANNAR, P.O. Box 17164, Bainsvlei 9338, South Africa
^d Small Grain Institute, Private Bag X29, Bethlehem 9700, South Africa

View larger version (71K): [in a new window]   Fig. 1. Amplification products obtained using DNA of ditelosomic 7DS (lanes marked S) and monotelosomic 7DL plants (lanes marked L) in conjunction with microsatellite marker Xgwm150.

View larger version (81K): [in a new window]   Fig. 2. DNA fragments amplified using primers of microsatellite marker Xgwm44, specific for chromosome arm 7DS, in ditelosomic 7DS (lanes marked S) and monotelosomic 7DL (lanes marked L) plants.

View larger version (14K): [in a new window]   Fig. 3. (a) A linkage map constructed using Mapmaker. The approximate position of the centromere is indicated. The ratio (percentages) of the PI 294994 vs. CS alleles and the probability of conformance to 50:50 segregation are also given. (b) A map of the same region from the ‘Komugi’ database.