TABLE 1

Segregation distortion ratios in the Aegilops tauschii F2 population

MarkerMap positionaChromosome armbχ2PTA1691 Homozygotes (%)Heterozygotes (%)TA1704 homozygotes (%)
Xcmwg706167.51DL14.50.000747.239.613.2
Xwg17768.93DS10.70.004841.847.310.9
XksuF804DS8.30.015540.047.312.7
Xcdo67713.05D?-111.80.002738.056.06.0
Xtag61451.95DL-212.30.002218.073.09.0
Xwg1026133.55DL-38.30.015842.038.020.0
Xtag439126.07DS7.920.01919.355.635.2
  • Genotype percentages, chromosome locations, and Chi-squared values of marker segregation ratios with the greatest degree of deviation within each region of distortion are given. The theoretical expected genotype frequencies are 25 and 50% for homozygotes and heterozygotes, respectively.

  • a The map position indicates the centimorgan distance from the first marker on the short arm of the genetic linkage map.

  • b S and L indicate the short and long arm of the chromosome, respectively. 5D?-1, 5DL-2, and 5DL-3 correspond to distorted regions 1, 2, and 3 on chromosome 5D, respectively.