The effect of some growth regulators on light‐induced germination of Paulownia tomentosa seeds
1988
Grubiš;ié, D. | Konjevié, R. | Neškovié, M.
Grubišié, D., Konjevié, R. and Neškovié, M. 1988. The effect of some growth regulators on light‐induced germination of Paulownia tomentosa seeds. ‐ Physiol. Plant. 72: 525–528. The germination of Paulownia tomentosa Steud. (Empress tree) seeds can be induced either by red light (R) or by exogenously applied gibberellic acid (GA₃). The R induced germination is completely suppressed by far red irradiation, abscisic acid (ABA) or by growth retardants such as ancymidol, tetcyclacis and paclobutrazol, though not by AMO 1618 or chloro‐choline chloride (CCC). The inhibition caused by far red light (FR) and growth retardants can be overcome by GA₃, while the ABA‐induced inhibition can be reversed by fusicoccin (FC), which does not reverse the inhibition caused by FR or growth retardants. It is noteworthy that the germination of light insensitive wheat, corn, alfalfa and mung bean seeds is not inhibited by growth retardants.
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