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.