Title: Rapid direct adventitious shoot organogenesis and plant regeneration from mature seed explants of Phellodendron amurense Rupr.
Abstract:Thidiazuron (TDZ) was more effective than 6-benzyladenine (6-BA) for adventitious shoot induction from mature seeds of Phellodendron amurense Rupr. Explants of hypocotyl + cotyledon produced more adve...Thidiazuron (TDZ) was more effective than 6-benzyladenine (6-BA) for adventitious shoot induction from mature seeds of Phellodendron amurense Rupr. Explants of hypocotyl + cotyledon produced more adventitious shoots than explants of cotyledon alone. Water rinsing pretreatment of dehusked seeds, optimally for two or three days, shortened the adventitious shoot induction period to 5 days. Adventitious shoot induction frequency (91.8%) and shoot number per explant (38.4) were highest on Murashige and Skoog (1962) medium (MS) with 1.0 mg/L TDZ and 0.2 mg/L a-naphthaleneacetic acid. Histological investigations indicated that adventitious shoots were induced directly from hypocotyl endodermal cells. 6-BA was more effective than TDZ for adventitious shoot elongation. Rooting frequency was highest (85%) with 1.0 mg/L indole-3-butyric acid. The rapid and high frequency adventitious shoot induction and plant regeneration method that we developed may be useful in future studies on Agrobacterium-mediated genetic transformation of P. amurense.
Key words: Phellodendron amurense, mature embryo, direct organogenesis, thidiazuron, ploidy analysis.Read More
Publication Year: 2011
Publication Date: 2011-09-16
Language: en
Type: article
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Cited By Count: 7
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