Callus Induction and Plant Regeneration from Mature Seeds of Timothy
2008
Lee, K.W. (National Institute of Animal Science, RDA, Cheonan, Republic of Korea) | Kim, K.Y. (National Institute of Animal Science, RDA, Cheonan, Republic of Korea) | Choi, G.J. (National Institute of Animal Science, RDA, Cheonan, Republic of Korea) | Lim, Y.C. (National Institute of Animal Science, RDA, Cheonan, Republic of Korea) | Kim, W.H. (National Institute of Animal Science, RDA, Cheonan, Republic of Korea) | Jung, M.W. (National Institute of Animal Science, RDA, Cheonan, Republic of Korea) | Seo, S. (National Institute of Animal Science, RDA, Cheonan, Republic of Korea) | Lee, B.H. (Gyeongsang National University, Jinju, Republic of Korea) | Lee, S.H. (National Institute of Animal Science, RDA, Cheonan, Republic of Korea), E-mail: [email protected]
Timothy (Phleum pratense L.) is an important grass species as forage. In order to optimize tissue culture conditions of timothy, the effects of plant growth regulators on callus induction and plant regeneration was investigated with mature seeds of colt cultivar. The optimal concentration of 2,4-D for the induction of primary callus from mature seeds was 3 mg/L. The highest embryogenic callus frequency (25%) was observed when the mature seed were cultured on MS medium supplemented with 3 mg/L 2,4-D and 0.1 mg/L BA. The highest plant regeneration frequency was observed when type B callus was transferred to N6 medium supplemented with 1 mg/L 2,4-D and 3 mg/L BA. Regenerated plants were grown normally when shoots were transplanted to the soil. A short tissue culture period and regeneration system would be beneficial for molecular breeding of timothy by the production of transgenic plant.
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