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벼 잡종초기세대에서 이삭줄기 대유관속 수와 이삭 특성의 분리양상
김광호,안종국,서경인 建國大學校附設農業資源開發硏究所 2001 農資源開發論集 Vol.23 No.-
The segregation modes and the selection efficiency of large vascular bundle(LBV) number and panicle characteristics were measured in three hybrid populations of rice. F_1 plants of the three crosses showed different direction and degree of dominance in vascular bundle number and panicle characteristics. The panicle neck diameter(ND), number of primary branches(PB) and LVB showed a typical normal distribution in F_2. When F_2 plants were divided into two groups up culm length of 90cm, the distribution of LVB number and panicle characteristics were not different between two populations. The selected and non-selected F_3 populations showed no difference in distribution of LVB number and panicle characteristics. However, F_3 populations grouped by culm length of 90cm showed different distributions in LVB and 100-grain weight among six characteristics observed. In F_2 populations, ND showed positive correlationship with PB, LVB number and grain number per panicle(GN). ND was positively correlated with PB, LVB number, GN and panicle length in selected and non-selected F_3 populations.
안종국,정일민,주호종 建國大學校 附設 農業資源開發硏究所 1997 農資源開發論集 Vol.19 No.-
ABSTRACT Experiment was conducted to investigate the variation of grain quality in a panicle at experimental farm and laboratory of Kon Kuk University from April 1996 to March 1997.Spikelet number on the primary branch was ranged 5 to 6. However, spikelet number on the secondary branch was ranged 3 to 4.Total spikelet number on primary branches in a panicle was about 50 % in Hwaryeongbyeo and Chucheongbyeo. But it was only 35 % in Dasanbyeo which had a lot of secondary branches.Grain weight in the secondary branches were lighter than those in the primary branches. Protein content of milled rice in the primary branches was lower than that of milled rice in secondary branches, while amylose content of milled rice in primary branches was higher than that of milled rice in secondary branches. Protein content of milled rice on the upper part of branches was lower than that on the lower part of branches, while amylose content of milled rice on the upper part of branch was higher than that on the lower part branches in Chucheongbyeo. Fat acidity of rice flour on the primary branches showed lower value than on the secondary branches. Iodine blue value was the same as fat acidity value. Hardness of brown rice on the primary branches was stronger than on the secondary branches.
안종국,정일민,홍성현 建國大學校附設 農業資源開發硏究所 1998 農資源開發論集 Vol.20 No.-
This study was conducted to obtain some basic informations by screening Oryza sativa cultivars available for direct sowing. Germination and emergence rate in low temperature (15℃), 1,000 seed weight, proline content and SOD activity of seed were investigated in 12 cultivars of glutinous rice and 14 cultivars of nonglutinous rice. Significant difference in germination rate was not observed among the cultivars, and emergence rate, germination speed and emergence speed varied among the cultivars, 2~87%, 4~99%, 2~72% in range. Emergence rate, germination speed and emergence speed were high in Oryza sativa "Daeripchalbyeo", "Baegna", "Sangnambatbyeo", "Sinseonchalbyeo", "Jeogna" and "Inbujinado", and low in O. sativa "Jado", "Hyangrni", "Dasanbyeo" and "Heugmi". Many native varieties of Oryza japonica with glutinosity showed high values in emergence rate, germination speed and emergence speed. Average number of days for emergence became shorter, as emergence rate of a variety was high, and the varieties with high emergence coefficient tended to belong to Oryza japonica cultivars with glutinosity. Negative correlation was observed between proline content and germination rate at low temperature, and very high positive correlation was recognized between proline content and SOD activity.
The Pattern of Expression of Phospholipase C-γ1 in Benign and Malignant Tumors of the Breast
Hee Joung Kim(김희정),Ki-Wook Chung(정기욱),Sung-Won Kim(김성원),Byung In Moon(문병인),Soo-Jung Ahn(안수정),Dong-Young Noh(노동영),Keun-Young Yoo(유근영),Kuk Jin Choe(최국진) 대한외과학회 2002 Annals of Surgical Treatment and Research Vol.62 No.6
Screening for Antioxidative Activity in Soybean Local Cultivars in Korea
Chung, Ill-Min,Ahn, Joung-Kuk,Chi, Hee-Youn,Lee, Jin-Ohk The Korean Society of Crop Science 2000 Korean journal of crop science Vol.45 No.5
Sixty local soybean cultivars were evaluated on the antioxidative activity by superoxide dismutase (SOD), 1, 1-diphenyl-2-picrylhydrazyl (DPPH), thiobarbituric acid(TBA), and chemiluminescence using the FI-CL system. Soybean were collected throughout the country, and were grown over two years (1997 and 1998) for measuring antioxidative activity in soybean seeds. There were differences in antioxidative activity depen-ding on the method of measurement and variation of the crop year. Soybeans from Kwangyang-shi-1 (76.78%) in 1997 and Kangjin-gun-3(79.14%) in 1998 showed the highest SOD activity, whereas those from Hwasoon-gun (80.43%) in 1997 and Kangjin-gun-2 (49.82 %) in 1998 exhibited the highest DPPH activity. Soybeans from Chongup-gun-2 (75.77%) in 1997 and from Yochon-shi-5 (69.17%) in 1998 exhibited the highest TBA activity, and those from Jinahn-gun (48.99%) in 1997 and Kohung-gun (49.73%) in 1998 exhibited the highest activity using the chemiluminescence method. These results suggest that it may be possible to develop soybean varieties with higher antioxidative activity.
Chung, Ill-Min,Ahn, Joung-Kuk,Kim, Jung-Tae,Kim, Choon-Song The Korean Society of Crop Science 2000 Korean journal of crop science Vol.45 No.1
This study was conducted to assess the allelopathic potentiality of Korea traditional seventy-nine rice (Oryza sativa L.) cultivars on barnyardgrass (Echinochloa crus-galli P. Beauv. var. oryzicola Ohwi) and to identify possible allelopathic compounds from selected rice cultivars, such as Seogandodobyeo, Huadobyeo and Heugbalbyeo. In the straw mixture, Seogandodobyeo showed the greatest inhibition (67.07%) on total emergence percentage. The greatest inhibition on total seedling length and dry weight of barnyardgrass occurred in Huadobyeo (58.32 %) and Heugbalbyeo (81.20%), respectively. An HPLC analysis with nine standard compounds showed that the concentrations and compositions of allelopathic compound depend upon the cultivars. Four compounds including Ο-coumaric acid in Seogandodobyeo extracts, four compounds including p-coumaric acid in Huadobyeo extracts, and seven compounds including Ο-coumaric acid in Heugbalbyeo were detected, respectively. Ο-coumaric acid (0.97 mg/g) in Seogandodobyeo, p-coumaric acid (0.92mg/g) in Huadobyeo and Ο-coumaric acid (1.02 mg/g) in Heugbalbyeo was detected as the highest amounts, respectively. The preliminary identification by HPLC analysis resulted in peaks with retention times close to those of standards which were confirmed with EI/MS. The mass spectra of p-coumaric, and Ο-coumaric acids showed molecular ions (m/z) at 164 and 164, and their base peaks (m/z) at 164 and 118, respectively.