BREAKING DORMANCY OF GLADIOLUS CORMS AND INHIBITORS INDUCING DORMANCY

Soaking in benzyladenine solution at 20 ppm for 24 hours, followed three days later by resoaking in gibberellin solution at 100 ppm, resulted in a breaking of dormancy in gladiolus corms and in a good growth of shoot and root after sprouting.
There are three groups of inhibitors in the ethyl acetate soluble acidic fraction of methanolic extract from corms.
These are abscisic acid, a fatty-acid-like substance and some phenolic compounds.
The combined solution of ABA and some phenolic compounds induces dormancy in cormlets more effectively then ABA or a phenolic compound alone.

Symposium on Cultivation of Flowers under Protection in the Mediterranean Regions

Y. Tsukamoto

https://doi.org/10.17660/ActaHortic.1974.43.41