3. Three virescents (X‑ray or U.V. mutants) obtained from Stadler (labeled here vS‑1, vS‑2, vS‑3) have the following results from intercrosses:

 

vS‑1

was found to be different from

v1, v2, and v4

 

vS‑2

"

v1, v2, v3, and v13

 

vS‑3

"

v2, v3, and v13.

 

G. T. DenHartog