Abstract
This report describes the efficient plant regeneration of Chamaecyparis obtusa Sieb et Zucc. via somatic embryogenesis. Embryogenic cultures were initiated from megagametophytes containing immature zygotic embryos. Embryogenic cultures were maintained and proliferated by 2–3-week interval subcultures in medium supplemented with 2,4-dichlorophenoxyacetic acid and 6-benzylaminopurine. High maturation frequencies of cotyledonary embryos were obtained on maturation medium containing maltose, polyethylene glycol, activated charcoal, and abscisic acid. Somatic embryos germinated readily after transfer to plant growth regulator-free medium. Growth of regenerated emblings has been monitored in a greenhouse.
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