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The identification of optimum condition for direct regeneration in black raspberry
Choi Heh Ran,Pill Jae Park,Hee Kwon Lee,Yun Song Joong,In Sok Lee 한국식물생명공학회 2008 식물생명공학회지 Vol.35 No.2
Adventitious buds appeared within 2 weeks on the base of the petiole explants and increased for two months. A maximum of regeneration (15.6%) was obtained on the medium containing 1.5 μM TDZ in combination with 1 μM IBA. To know which explants are the best for the induction of regeneration, three explants such as leaf, petiole and leaf-petiole were used. Among the explant types, the leaf-petiole explant was significantly more effective than leaf and petiole for promoting adventitious shoots, with leaf-petiole inducing at the highest regeneration frequency (33.7%). The regeneration frequency of adventitious shoots in the leaf-petiole explants was significantly affected by leaf size and the position of explants. The leaf-petiole smaller than 5 mm leaf in width was induced at the highest regeneration frequency (68.9%). The smaller leaf sizes, the greater regeneration frequency. Also when the leaves are nearer to the shoot tip, the regeneration frequency is higher. When the rooted micro-shoots were transferred to the soil after growing for 6 weeks in the media, the survival rate was 90%.
Heh-Ran Choi,Pill-Jae Park,Hee-Kwon Lee,In-Sok Lee,Song-Joong Yun 한국작물학회 2008 한국작물학회 학술발표대회 논문집 Vol.2008 No.10
In order to breed the useful mutants in black raspberry, cultivated in Gochanggun, leaf-petiol explants from shootproliferating culture was regenerated after irradiated with 30, 50 and 70 Gy gamma-ray and seeds were irradiated with 100, 130, 150, 170 and 200 Gy gamma-ray. The LD50 dose of leaf-petiol explants and seeds in black raspberry was identified as 30 and 150 Gy after two months and one month, respectively. The mutants such as leaves with increasing width, chlorophyll content and increasing anthocyanin were selected in regenerated explants and seeds irradiated. The increased rate of leaves width and chlorophyll were 33.3% and 23.1% compared to the control. Also, antocyanin concentration in leaf of mutnats from irradiated seeds was increased till 17.3%. For the breeding of black raspberry, valuable mutants obtained will be expected for improving photosynthesis efficiency and functional components, and will be useful for developing new cultivars.
The identification of optimum condition for direct regeneration in black raspberry
Ran, Choi-Heh,Park, Pill-Jae,Lee, Hee-Kwon,Joong, Yun-Song,Lee, In-Sok The Korean Society of Plant Biotechnology 2008 식물생명공학회지 Vol.35 No.2
Adventitious buds appeared within 2 weeks on the base of the petiole explants and increased for two months. A maximum of regeneration (15.6%) was obtained on the medium containing $1.5\;{\mu}M$ TDZ in combination with $1\;{\mu}M$ IBA. To know which explants are the best for the induction of regeneration, three explants such as leaf, petiole and leaf-petiole were used. Among the explant types, the leaf-petiole explant was significantly more effective than leaf and petiole for promoting adventitious shoots, with leaf-petiole inducing at the highest regeneration frequency (33.7%). The regeneration frequency of adventitious shoots in the leaf-petiole explants was significantly affected by leaf size and the position of explants. The leaf-petiole smaller than 5 mm leaf in width was induced at the highest regeneration frequency (68.9%). The smaller leaf sizes, the greater regeneration frequency. Also when the leaves are nearer to the shoot tip, the regeneration frequency is higher. When the rooted micro-shoots were transferred to the soil after growing for 6 weeks in the media, the survival rate was 90%.
Heh-Ran Choi,Hee Kwon Lee,Ji-Young Song,Hee-Jeon Park,Sang-Eun Lee,Pill Jae Park,In Sok Lee,Dong-Hee Rhew,Song-Joong Yun 한국작물학회 2010 한국작물학회 학술발표대회 논문집 Vol.2010 No.04
In order to breed the useful mutants in black raspberry, cultivated in Gochang-gun, leaf-petiol explants from shoot-proliferating culture was regenerated after irradiated with 30, 50 and 70 Gy gamma-ray. The LD50 dose of leaf-petiol explants was identified as 30Gy after two months. Morphological characteristics of the variants were observed such as stem variation, existence and nonexistence of spine, spine color, anthocyanin content, width of leaf, thick of leaf compared with donor cultivar. Of the 701 mutants, 14 lines with the useful mutant characters were selected and random amplified polymorphic DNA(RAPD) was carried out to confirm mutation state at the molecular level with 20 primers. There are many bands be revealed only in mutants and disappear in mutants reversely. RAPD analysis revealed a high level of genetic diversity among Control and mutants. Compared to Control, No. 14 mutant showed the highest genetic diversity. Also, the co-dominant SSR markers have allowed the evaluation of heterozygosity. Valuable mutants obtained will be useful for developing new cultivars and studying gene function in molecular level.
Study on improvement of soil physical and chemistry properties in black raspberry sequential field
In Sok Lee,Pill Jae Park,Hee Kwon Lee,Choi Heh Ran 한국작물학회 2008 한국작물학회 학술발표대회 논문집 Vol.2008 No.10
This study was carried out to investigate the improvement of soil physical and chemistry in black raspberry sequential field. We had used the subsoil-crusher, oriental herbal, perlite, popped rice hull, burned charcoal of rice hull and peat moss as a soil conditioner. On the whole, the physical and chemistry properties of treated-plots was higher than those of Control field after applying soil conditioners. Before planting, the pH and E.C. range of field was 4.9~5 and 0.5~0.6 ds/m, respectively. After applying soil conditioners, the pH and E.C range of Control field was altered to 4.3 and 2.2ds/m and the pH and E.C range of peat moss-field was 5.2 and 1.3 ds/m. The significant difference(p<0.05) in pH and E.C value was observed between Control-field and peat moss-field. In the size of soil aggregate structure, the aggregate structure weight of Control over 4mm long was 44 g and treatments of perlite, popped rice hull, burned charcoal of rice hull and peat moss was 53 g, 65g, 65g and 72g, respectively. There is a significant difference(p<0.05, 0.001) between Control and treatments. In the results of chlorophyll analysis, all of the treated-plots except for the oriental herbal have a high chlorophyll value (p<0.05, 0.001) compared to the Control. In view of the results so far achieved, there is a great difference on the frequency of dead plant between Control and treatments. The dead plants number of Control, subsoil-crusher, oriental herbal, perlite, popped rice hull, burned charcoal of rice hull and peat moss was 31, 21, 7, 12, 10, 12 and 2, respectively.