Table 5.

The number of bolted and non-bolted biennial plants from the breeding line CZ259 (bb types) ± GA application in SDs (8 h light) with and without prior vernalization

GA treatment	Vernalized		Non-vernalized
	Bolted	Not bolted	Bolted	Not bolted
+GA	9a	11	0	25
−GA	0	17	0	24

Vernalized and non-vernalized CZ259 (easy bolting bb genotype) plants growing in a SD CE room were treated with GA and scored for bolting by visual scoring and as defined by the threshold apex height to root diameter ratio for each treatment. Interactive effects between GA and vernalization were then determined based on ANOVA as described for Table 3.

^aBolting was significantly affected by GA (P < 0.01).