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Effect of Medium Components and Culture Methods on Prothallus Propagation of Pteridium aquilinum var. latiusculum (Desv.) Underw. ex Hell.  

Shin, So-Lim (Dept. of Horticultural Science, Chungbuk National University)
Lee, Moo-Yeul (Dept. of Horticultural Science, Chungbuk National University)
Choi, Jae-Sun (Chungbuk Provincial ARES)
Lee, Cheol-Hee (Dept. of Horticultural Science, Chungbuk National University)
Publication Information
Korean Journal of Plant Resources / v.22, no.4, 2009 , pp. 337-342 More about this Journal
Abstract
Present studies were conducted to evaluate the effects of medium strength(MS and Hyponex), carbon sources and their concentrations, agar concentrations, and inoculation amounts on prothallus propagation of Pterdium aquilinum var. latiusculum(Desv.) Underw. ex Hell in vitro. The optimum MS medium strength for prothallus propagation was 2MS concentration. Phosphate source was most effective for prothallus growth of P. aquilinum var. latisculum. The addition of 1% sucrose or glucose to MS medium promoted prothallus multiplication. Growth of prothallus was not affected by agar concentration. Propagation of homogenized prothallus was vigorous even in liquid medium. Chopped gametophytes(100 and 200 mg) were inoculated on 250 ml ${\Delta}$flask with 100 mL of 2MS concentration medium and suspension culture was done at 100 rpm for 22 days. After 20 days, prothallus multiplication slowed down, so 100 mg of chopped prothalli is recommended for initial inoculation, since initial amount of inoculum did not affect subsequent prothallus multiplication. Consequently after 20 days of suspension culture, prothallus should be subcultured or transplanted outside of growing vessels.
Keywords
Bracken; gametophyte; in vitro culture; suspension culture; micropropagation;
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Times Cited By KSCI : 2  (Citation Analysis)
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