Canna crosses

Summary

• 1. The crosses ofCanna glauca types from Bolivia, Java and Montevideo, all having flaked labellum, with “old purple” corroborate the results of the previously described crosses of the sameglauca types with pure yellow.

• 2. The results are also in harmony with those obtained after crossing flaked segregates with old purple and with pure yellow.

• 3. The occurrence of SSWW and SSww Bolivia is confirmed, Java is SSWW and Montevideo Ssww.

• 4. Montevideo no. 637-3, grown from seed in 1924 as a D₃, is ST₁T₂T₃. st₁t₂T₃, whereas three specimens of no. 846 (D₅) and probably also the nos. 847 (D₄) and 1153 (D₇) were ST₁t₂T₃. st₁T₂T₃, thus balanced lethals.

• 5. This may explain the fact that the first pure yellow, an F₃ specimen from the cross Montevideo 504-5 (grandmother of 637-3) ×Java, was free from lethals in one of its s-components.

• 6. There exists a large extent of variability as to the development of anthocyanin in the labellum both in Ssww and in ssww plants. Both contain extreme variants that can hardly be distinguished from ssWW.

• 7. The wild type flowers ofCanna glauca in the swamps of Surinam are white. Its seeds produce in the Netherlands plants with yellow flowers and flaked labellum, partly even with red patches spread over the whole breadth of the staminodes.