Location of Les1 on chromosome 2S

The dominant lesion mutant, Les1, has been located between sk1 and wt1 on the short arm of chromosome 2. Results from the testcross of ( + Les1 wt1)l(sk1 + + ) X sk1 + wt1 are as follows:
 
Reg. Genotype No. Totals
0 + Les1 wt1 70  
  sk1 + + 93 163
1 sk1 Les1 wt1 2  
  + + + 3 5
2 sk1 + wt1 I  
  + Les1 + 6 7
1,2 + + wt1 0  
  sk1 Les1 + 0 0

sk1 Les1 0.029±0.013

Les1 wt1 0.040±0.015

These data place Les1 approximately mid-way between sk1 and wt1. Les1 should be an excellent seedling marker for silkless plants by choosing the white-tip, non-lesion seedlings resulting from the above cross.

Dave Hoisington

Please Note: Notes submitted to the Maize Genetics Cooperation Newsletter may be cited only with consent of the authors.

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