3. New data.

  1. The factor o2 has shown linkage with ramosa (C.O. 18 per cent on the basis of F2 data). Backcross data will be available next year.
  2. Backcross data have shown that both lo and sp are on the Ts5 side of su. They may be allelomorphic.
  3. Backcross data of material sent by Dr. Emerson indicate that wl is between Ts5 and su. The order probably is Ts5-wl-su-Tu.