Fig. 1

Mean length of spike and internodes in the families F2:4 derived from the cross Chris Mutant/Novosibirskaya 67: R – Rht-B1a, r – Rht-B1p; V – Vrn-B1a, v – vrn-B1; P – Ppd-D1a, p – Ppd-D1b. The 4th upper internode is not depicted. Total plant height differs from the mean plant height in Table 4 due to polymorphism in the number of internodes between plants