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A New Sesame Variety, “Kangbaek” with Disease Resistance, Lodging Tolerence and High Yield
Kang-Bo Shim,Churl-Whan Kang,Suk-Bok Pae,Si-Kyu Lim,Yu-Young Lee,Duck-Yong Suh,Jae-Whan Rho,Jin Song,Dong-Whi Kim,Ho-Young Kim 한국육종학회 2005 한국육종학회지 Vol.37 No.5
A new sesame variety Kangbaek was developed from Yeongnam Agricultural Research Institute in 2004. Cros wasmade by lodging resistant SP9003-3 line to the F1with high yielding capacity, folowed by pedigree selection, yield test and RYT by the sesame breeding team at the National Insti-tute of Crop Science up to 2003. The variety showed higher disease resistance, especially phytophothra disease, and lodging resis-respectively. It's 1000 grains weight was about 2.54 g indicating 0.03 g heavier than that of Yangbaekkae, and it's oil content wasabout 52%. Kangbaek also contained total 7.65mg/g of such lignans as sesamin and sesamolin. The average yield of Kang-baek was 82 kg per 10a at the national-wide regional performance.
Application of in vitro ovary culture for cottonwood (Populus deltoides) breeding
Kang,Ho-Duck,Lee,Min-Soon 한국자원식물학회 2004 Plant Resources Vol.7 No.2
Five different poplar hybrids were tested for rescuing embryo to elongate in vitro plantiets after hybridization. Ovaries and ovules were cultured on Woody Plant Medium (WPM) supplemented with cytokinins, 6-benzylamine (BA) and zeatin. Multiple shoots were initiated from half section of capsule with immature embryos after 21 days from pollination and tiny shoots were formed after the expansion of cotyledons in ovule cultures. Germinating response was better in intraspecific hybrids (6.53±1.66) than interspecific crosses (0.93±0.54) 수식 이미지 from half section of capsules on WPM medium. In general, zeatin was better than BA in inducing multiple shoots from isolated ovules. The highest average number (19.40±4.53) of shoots was produced from immature ovules of 21 days post-pollination of WPM medium supplemented with 5.0 mg/L zeatin. The highest percentage of germination was 93% from the half section of in vitro ovary cultures. Soil acclimation was successfully conducted in cell tray containing artificially mixed soil with 96% survival rate.
In vitro shoot proliferation of Alnus japonica (Thunberg) Steudel
Kang,Ho-duck,Lee,Min-Soon 한국자원식물학회 2004 Plant Resources Vol.7 No.1
In vitro proliferation system was achieved by using nodal segment excised from greenhouse grown juvenile stock plants of Alnus japonica. Stem explants were cultured on MS medium supplemented with different plant growth regulators of cytokinin and/or their combinations. The most effective cytokinin source was the combination of zeatin 2.0 mg/L and TDZ 0.05 mg/L producing the average number of shoots (16.8±3.6). In addition, healthy roots were formed after small clumps of shoots were transferred to half strength of MS medium containing IBA 0.02 mg/L with optimal rooting capacity. Soil acclimatization was successfully conducted in cell tray containing artificially mixed soil with 92 % survival rate.
高X線 吸收유리에 있어서 BaO, SrO의 含量變化가 液相溫度에 미치는 影響
李卿喜,梁在翊,金德文,姜元浩 明知大學校 産業技術硏究所 1987 産業技術硏究所論文集 Vol.6 No.2
The liquidus temperature was observed according to the change of content BaO 6 W/O ~ 12W/O and SrO 1 W/O~4W/O in R₂O-PbO-Al₂O₃- (BaO+SrO+SiO₂) glass system. The liquidus temperature varied between 810°C ~ 950°C in these glasses. The effect of BaO & SrO content to the liquidus temperature of the glasses are as follows. 1. The variation of the liquidus temperature were remarkable by the content of SrO in the range of BaO contents from 6 W/O to 8 W/O. 2. The minimum liquidus temperature is located at the composition of BaO 8 W/O SrO 4 W/O SiO₂ 68 W/O.
Kang, Ho-Duck,Moon, Heung-Kyu The Plant Resources Society of Korea 2001 Plant Resources Vol.4 No.3
The efficiency of in vitro regeneration of four clones of Populus euramericana, Canada blanc, Eugenii, I-45/51, and Wisconsin #5, was examined. Cytokinins and the combinations with auxins affected the rate of regeneration from the explants of root segments, stem internodes, and leaf discs. Overall, BA and the combination with auxins were effective in root segments and leaf discs of the Canada blanc clone, whereas zeatin and the combination with auxins were important in stem internodes of the Wisconsin #5 clone. The highest number of shoots averaging 17.6 $\pm$ 0.47 from root segments in the Canada blanc clone,18.2 $\pm$ 3.0 from stem internodes in the Wisconsin #5 clone, and 17.8 $\pm$ 1.92 from leaf discs in the Canada blanc clone were obtained with 2.0 mg/1 BA, 2.0 mg/l zeatin combined with 0.2 mg/l IAA, and 0.5 mg/l BA combined with 0.05 mg/l 2,4-D, respectively. In particular, the addition of 2,4-D into cytokinin medium promoted shoot proliferation.