We concluded that the pod syndrome was determined by a codominant genetic factor and gave it a preliminary name Orig . 91 F 2 plants were grown. Pods of F 2 plants from the cross between a plant heterozygous for Orig from the initial stock and testerline fas bt n . A capital letter stands for dominant alleles of Gp, R, for the factor Orig, and for allele Tl of a codominant gene tl . In this experiment, we considered Orig as a dominant gene and pooled together homozygotes and heterozygotes.
All dominant alleles are in coupling phase.
2 Here and in Table 4 calculations were made with the aid of the program CROS by Dr S.M. Rozov. These heterozygous plants were pollinated with the same testerline. The results of this testcross are presented in Tables 2 and 3.