Fig. 8

Effects of BDM and DDG on flowering of dormant Siberia bulbs. a BDM and DDG accelerated flower development in the absence of sufficient cold storage. Insufficient cold storage (6 weeks of cold storage) resulted in flower abortion while 8 weeks of cold storage allowed develop flowers in the control. The images were taken 24/22 weeks after planting. Scale bars, 1 cm; b The number of flowers developed from BDM and DDG-treated Siberia bulbs after storage under the low temperature (4 °C) for 4 weeks, 6 weeks, and 8 weeks. The calculation was performed after 24 weeks of planting. c, d BDM and DDG did not affect flower size. The upper and lower images were taken when flowers were blooming, 26/24 weeks after planting. Scale bars, 2 cm. The calculation was performed at the full blooming stage. Data in b and d represent mean ± s.d. of six biological replicates (n = 6 bulbs per sample). Different letters indicate significant differences (p < 0.05) by ANOVA Turkey’s HSD tests for pairwise comparisons