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Abstract
Seed germination of Alexandra palm [Archontophoenix alexandrae (F. J. Muell,) H. Wendl & Drude] was accelerated by presoaking for 24 or 72 hours in water, and further accelerated by a 72 hour treatment with 100 or 1000 ppm, gibberellic acid (GA), but not with benzyladenine (BA) or naphthaleneacetic acid (NAA).
Abstract
Scarification and pre-soak treatments with water or 1000 ppm gibberellic acid (GA) accelerated seed germination of Alexandra palm [Archontophoenix alexandrae (F. J. Muell.) H. Wendl. & Drude]. Macarthur palm [Ptychosperma macarthurii (H. Wendl.) Nichols] germination was accelerated following scarification or pre-soaking in 1000 ppm GA, however, in both species greatest acceleration was obtained when the scarification and GA treatments were combined. Germination time of Macarthur palm was also reduced by 6 weeks when sown in beds heated to 27° ± 1°C.