ISHS Acta Horticulturae 1185: II International Symposium on Germplasm of Ornamentals
A primary investigation of the photoperiod effect for flowering induction in Lilium ×formolongi |
| Authors: | Y.F. Li, X.L. Han, M.F. Zhang, G.X. Jia |
| Keywords: | Lilium ×formolongi, photoperiodic flowering, CONSTANS, FLOWERING FLOCUS T |
| DOI: | 10.17660/ActaHortic.2017.1185.23 |
| Abstract:
Lilium ×formolongi is a white trumpet lily hybrid with the characteristic of flowering within a year after sowing. The flowering induction mechanism and molecular regulatory method of L. ×formolongi seedlings are still unclear. Most growth and development of L. ×formolongi seedlings occur under a 12 h or greater photoperiod in a typical growth environment. Thus photoperiod may be important in triggering flowering transitions in this plant. Through the investigation of growth and flowering traits of L. ×formolongi seedlings under different natural and manual photoperiod conditions, the results indicate that long day conditions were critical for the flowering induction and transition of L. ×formolongi seedlings. Moreover, CONSTANS (CO) ortholog LfCOL9 and FLOWERING LOCUS T (FT) ortholog LfFT1 were obtained through homologous cloning from L. ×formolong. The two orthologs may play important roles in the photoperiodic flowering pathway of L. ×formolong. This study may serve as the foundation to investigate the mechanism of the photoperiodic flowering pathway in L. ×formolongi seedlings. Furthermore, it may be helpful for accelerating the culture of L. ×formolongi cut flowers and in breeding seed-propagated lily hybrids. | |
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