Biologia plantarum 52:616-620, 2008 | DOI: 10.1007/s10535-008-0121-5
High frequency plant regeneration from protoplasts in cotton via somatic embryogenesis
- 1 Department of Agronomy, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, P.R. China
A highly reproducible system for efficient plant regeneration from protoplast via somatic embryogenesis was developed in cotton (Gossypium hirsutum L.) cultivar ZDM-3. Embryogenic callus, somatic embryos and suspension culture cells were used as explants. Callus-forming frequency (82.86 %) was obtained in protoplast cultures from suspension culture cells in KM8P medium with 0.45 µM 2,4-dichlorophenoxyacetic acid (2,4-D), 0.93 µM kinetin (KIN), 1.5 % glucose and 1.5 % maltose. Protocolonies formed in two months with plating efficiency of 14 %. However, the callus-forming efficiencies from other two explants were low. The calli from protoplast culture were transferred to somatic embryo induction medium and 12.7 % of normal plantlets were obtained on medium contained 3 % maltose or 1 % of each sucrose + maltose + glucose, 2.46 µM indole-3-butyric acid (IBA) and 0.93 µM KIN. Over 100 plantlets were obtained from protoplasts derived from three explants. The regenerated plants were transferred to the soil and the highest survival rate (95 %) was observed in transplanting via a new method.
Keywords: ex vitro transplantation; Gossypium hirsutum L; plant growth regulation; sugar combinations
Subjects: auxins; cotton; cytokinins; ex vitro transfer; Gossypium hirsutum; growth analysis, biomass and yield enhancement; in vitro culture, callus; in vitro culture, somatic embryogenesis; protoplasts; sugars
Received: December 14, 2006; Accepted: June 17, 2007; Published: December 1, 2008 Show citation
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