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Somatic Embryogenesis and Plant regeneration with Embryogenic Tissue Lines in Larix leptolepis  

Kim, Yong-Wook (Forest Biotechnology Division, Korea Forest Research Institute)
Publication Information
Journal of Korean Society of Forest Science / v.99, no.4, 2010 , pp. 633-637 More about this Journal
Abstract
This study was conducted to evaluate various effects of kinds of culture medium, concentrations of abscisic acid (ABA) or /kinds of osmotica on maturation of somatic embryos (SEs) with four (LL-L, LL-K, LL-P and LL-N) embryogenic tissue lines (ETLs) in Japanese larch (Larix leptolepis). In comparison of two culture medium, the LL-P produced the highest number of the cotyledon-staged SE (134.9/90 mg tissue) in 1/2LM medium. In contrast, no SEs were obtained except the LL-P (32.9) in medium of BLG. Effects of two concentrations of ABA in the medium with four ETL for SEs maturation were also compared. In the test of 60 or 100 ${\mu}M$ ABA, the highest result was obtained in 60 ${\mu}M$ ABA (142.9). However, the influence of ABA had little on SEs production except the LL-N regardless of concentrations of ABA. In comparison of different kinds/concentrations of osmotica, the best response was obtained from the treatment of 0.2 M maltose, the LL-K (540.5). In conclusion, the effects of production of SEs were greatly rely on the ETLs, rather than kinds of medium, concentrations of ABA or osmotica which were used in maturation of SEs.
Keywords
Japanese larch; somatic embryo; embryogenic tissue line; abscisic acid; osmotica;
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