Study of the Fertilizer Responses of Rice Varieties

Lee, Hong Suk,CHoi, Hyun Ok 忠南大學校 1963 論文集 Vol.3 No.-

The purpose of this investigation was to determine under Korean conditions the yield response of rice varieties to various fertilizer levels with emphasis on haeavy fertilization. A total 37 varieties were used in the test of which 14 were early, 12 medium, and Ⅱ late maturing. A randomized split plot design with three replications was employed in which fertilizer treatments were the main plots with varieties as sub plots. The data are for the year 1958. The experiment was established on te farm of the Institute Agriture located at Suwon, korea. The results obtained are summarized as follows: Varieties Suwon #118 and Hatsnishiki of the early maturing group; Shirogane and Kanto #52 of the medium group; and Hchin and Kockyangdo of the late group were highly tolerant to heavy fertilization and produced large yields. within the levels of fertilizer used, yields can be experessed by the following second degree curvilinear regression equations; 1)Hatsnishki......................Y=186,905+57,187X+5.294X^2 2)Suwon#118....................Y=268,276+82.608X-16.5594X^2 3)Shirogane.......................Y=262,178+65.146X-2.214X^2 4)Kanto #52......................Y=218,778+63.339X-3.794X^2 5)Kacgyangdo....................Y=272,060-52.875X-1.792X^2 6)Ilchin...............................Y=297,461-39.641X-1.377X^2 where Y yield in kgs of brown rice per 10 are and X=fertilizer level where the standard quantity of fertilizer is assumed to be 1.0. Variation in yield response with increased application of fertilizers was large within both the early and medium maturing groups. It is interesting to note that with early group particularly, most of the varieties were not responsive to low rates of fertilizer application, but were exceedingly variable at high levels of fertilization. On the other hand, and in very general terms, most varieties of the late maturing group showed continuous but rather low in yield with the application of increased amounts of fertilizer. The most tolerant and suitable responding favorably to in creased rates of fertilizer application show a tendency toward; (1)Highly resistance to blast (2)Having either the largest number of panicles per hill; or a medium number per hill with relatively long pancles. (3)High weight ratio of rough rice to straw under heavy fertilization, comparing with others; or having no effect in this ratio.

보리에서 育成된 몇가지 澱粉 isogenic line의 澱粉粒 形態 및 理化學的 特性

Hyeon Suk Song(宋賢淑),Hong Suk Lee(李弘䄷),Tae Young Chung(鄭泰英) 한국육종학회 1988 한국육종학회지 Vol.20 No.3

Several isogenic lines to study the effects of chemical structure and/or granular shape of the endosperm starch on the quality of barley were bred by combining three pairs of genes, of waxy or non-waxy, fractured or round starch granule, and shrunken or plump endosperm. In granular shape, fractured starch granule generally showed less small compare to those of round starch granule. Although chemical compositions of the endosperms did not differ widely, the highest in sedimentation values and β-glucan viscosities were showed by the lines having waxy and round starch endosperms, the lowest by the lines having non-waxy and fractured starch endosperms. The increasing patterns of the swelling powers with the heating temperatures differed among the bred lines and amylogram patterns showed that the waxy lines had lower gelatinization temperatures and higher peak viscosities than non-waxy lines.

綠豆의 開花期, 收量 및 收量關聯 形質의 遺傳에 關한 硏究 3. 遺傳力과 形質相互間의 關係

Yeong Ho Lee(李英豪),Hong Suk Lee(李弘䄷) 한국육종학회 1987 한국육종학회지 Vol.19 No.1

Heritabilities, correlations, and path coefficients for yield and yield related characters were estimated in the F₂ generations of 30 possible combinations of six-parent diallel cross. The F₂ populations were grown under two different plantings, early and late, in the experimental field of Crop Experiment Station in 1984. The estimation of broad sense heritability was considerably high for the plant height (71.0%), number of pods per plant (64.5%), 100-seed weight (94.9%), and seed yield (63.1%) and medium for the number of branches (48.5%). However, those were very low for the first pod setting node (6.6%) and the number of seeds per pod (26.8%). Seed yield was positively correlated with the number of pods per plant and 100-seed weight, and negatively with the plant height, the number of branches and the first pod setting node. The days to flower was positively correlated with the plant height, the number of branches and the first pod setting node, and negatively with the number of pods per plant and 100-seed weight. Path analysis presented that the direct effect of the number of pods per plant and of 100-seed weight was predominant to seed yield. The days to flower affected directly to the number of pods per plant.

米粒 心腹白의 遺傳 및 選拔效果에 關한 硏究

崔相鎭,許文會,李弘석 서울大學校 農科大學 1979 서울대농학연구지 Vol.4 No.1

This study is concerned with the inheritance and varietal differences of endosperm chalkiness of rice kernels. Experiments were conducted by first treating with different temperatures, planting times, and various levels of leaf and glume pruning at heading stage. Secondly, clear and chalky varieties were crossed with male sterile lines to compare the effect of ovary and pollen on the development of the endosperm chalkiness. Distributions of F₂ and F₃ progenies were observed, and selections for clear and chalky grains from F₂ to F₃ were made to determine the selection efficiency at each ganeration. Correlation coefficients were calculated between chalkiness and other grain characters such as grain length, width, thikness, volume and weight. The results are summarized as follows ; 1. The chalkiness of rice kernels showed the lowest degree at 20℃ when the plants were treated during the ripening period. Lower and higher temperatures than 20℃ increased kernel chalkiness proportionately. Constant day-night temperatures caused more chalkiness than did varying day-night temperatures. 2. Early and late plantings caused more chalkiness than normal planting. However, the degree of variation was less than that of temperature treatment. 3. Chalkiness increased with the amount of leaf pruning at heading stage, while decreased with glume pruning. These trends were proportional to the amount of leaf and glume removed. 4. The effect of temperatures, planting dates, and leaf and glume pruning on the incidence of chalkiness was generally higher for chalky varieties than with clear varieties. Treatment effects were significant among varieties, even within clear and chalky variety groups. 5. The differences of chalkiness between clear and chalky varieties were always clearly found under such treatments as temperatures, planting dates, and leaf and glume pruning during the ripening period. 6. The ovary showed greater effect on chalkiness in F₁ seeds than did pollen when male sterile clear and chalky lines were crossed to normal clear and chalky varieties. 7. The F₂ distribution of progenies from crosses of clear and chalky varieties showed 20∼56% clear, 29∼54% intermediate represented by 1 to 6 degree of chalkiness, and 5∼28% chalky represented by 7 to 9 degree, The percent of intermediate chalkiness was higher with crosses of Japonica and Indica type varieties than from Japonica and Japonica types when clear varieties were used as parents. 8. Selection efficiency for clear grain was high showing sharply increased population toward clear with small variation while chalky grain showed lower selection efficiency with higher variation. Selection efficiency for clear grain was higher in the F₃ than in F₂ generations. 9. Studies on the relationship between chalkiness and other grain characters in F₃ lines demonstrated a highly significant positive correlation between chalkiness and grain weight, grain volume of all crosses, grain thickness in five crosses, grain width in three crosses, and grain length in two of six crosses.

大豆의 世代短縮에 關한 硏究 : Effect of Different Day Length and Temperature Treatment on the Flowering and Seed Maturation of Soybean Cultivars -日長 및 溫度處理가 大豆品種의 開化 結實에 미치는 影響-

安容泰,黃鐘珍,李弘錫,朴義浩 서울大學校 農科大學 1980 서울대농학연구지 Vol.5 No.1

For the acceleration of generation advancement of soybean, the effects of four different day length and two different temperature treatments before and after flowering on the growth, flowering and seed maturation of soybeans were studied with six cultivars. The results of this experiment are summarized as follows: 1. The days from seeding to flowering was shortened by 2 days in Seocheonbaikdu and 18 days in Baikcheon by the short day treatment before flowering, while it was delayed by one or two days with long day treatment. 2. By the short day treatment before flowering the days from flowering to seed maturation was shortened by 7 days in Seocheonbaikdu and 10 days in Baikcheon, while little effect of long day treatment was obesrved. On the other hand, the effect of day length treatment after flowering on the seed maturation indicated significant varietal difference, and thus in Baikcheon seed maturation was shortened by 18, 7 and 7 days with short day treatment and delayed by 7, 7 and 10 days with long day treatment compared with control, according to the pre-flowering treatment respectively. But seed maturation of Seocheonbaikdu was affected little by day length treatment. 3. In the effect of day length treatment on the growth duration, interaction between cultivars and day length treatment before and after flowering was significant. The growth duration of Seocheonbaikdu were 69 and 79 days under short day and long day treatment before flowering and 78 days under control regardless of day length treatment after flowering, respectively. On the other hand, growth duration of Baikcheon were 77 days in short day treatment and 123 days in case of long day treatment before and after flowering, and showed 85 to 120 days according to the combination of day length treatment before and after flowering. But in general, day length treatment after flowering was more effective than treatment before flowering. 4. Days from flowering to maturity was reduced by 5 to 13 days in the medium and late maturing cultivars by short day and neutral day length treatment after flowering, but no effect in early cultivars was observed. 5. The days from flowering to maximum dry weight of seeds were 35 to 50 days under shortday or neutral day length treatment after flowering and 40 to 60 days in case of long day treatment compared with 35 to 60 days of natural day length. 6. Low temperature treatment after flowering delayed seed maturation significantly, especially in medium and late cultivars. 7. Both short day and long day treatments beore flowering decreased the number of flowers per plant, especially in Baikcheon. 8. The pod setting percent was affected greatly by day length treatment before flowering and indicated the highest percent of pod setting in case of short day treatment. The pod setting percent of Seocheonbaikdu ranged 42 to 60% and that of Baikcheon ranged from 24 to 65% depending on day length treatments before flowering. 9. The short day treatment before flowering decreased stem height, seeds per plant and 100 grain weight significantly. But long day treatment did not affect on the above characters. 10. Short day treatment after flowering increased pod setting percent and decreased 100 grain weight. In contrast, long day treatment decreased pod setting percent and increased 100 grain weight.

너도방동산이 (Cyperus serotinus Rottb.)의 密度와 競合其間이 水稻의 生育과 收量에 미치는 影響

趙亨烈(Cho, Hyung Yul),李弘拓(Hong Suk Lee),權容雄(Yong Woong Kwon) 韓國雜草學會 1983 Weed&Turfgrass Science Vol.3 No.2

대퇴골 경부 골절 환자에서 골조송증과 대퇴 근위 골소주 지표와의 관계에 관한 연구

高武耕,李光錫,邊永壽,李弘鍵 최신의학사 1991 最新醫學 Vol.34 No.2

惡性腫瘍에 倂發한 感染症에 對한 Amikacin Sulfate(Amikin^(�))의 效果

朴正植,朴宣陽,洪基碩,金聖權,李弘揆,李文鎬 최신의학사 1978 最新醫學 Vol.21 No.7

蜂毒 藥鍼刺戟이 Methotrexate로 誘發된 생쥐의 免疫機能低下에 미치는 影響

金昌煥,姜成吉,金容奭,高炯均,朴英培,李弘錫 慶熙大學校韓醫科大學韓醫學硏究所 1998 慶熙韓醫大論文集 Vol.21 No.1

In order to investigate the effects of bee venom aqua-acupuncture(BVA) on the immunosuppression induced by methotrexate(MTX), three different products with 0.1ml of 0.035%(0.7mg/2ml) of bee venom were aqua-punctured every 2days for 3times to the loci corresponding Choksamni(ST36) in MTX premedicated mice everyday for 3times, and thereafter number of WBC, T-cell, B-cell, lymphocyte proliferation, and splenic natural killer cell activity(NKCA) were also measured. Bee venom aqua-acupuncture groups divided into 3 groups. BVA I was group treated with dilluted bee venom from bees in Korea, BVAⅡ was group treated with dilluted bee venom from 0.1% of bee venom manufactured by Monmouth Pain Institute Inc. in U.S.A., BVAⅢ was group treated with dilluted bee venom from 0.05% of bee venom manufactured by An Tu Pharmaceutical Factory of Jilin Province in China. The results were summarized as follows : 1. Number of WBC was increased as compared with the control group in all the bee venom aqua-acupuncture groups. But there was no significance between bee venom aqua-acupuncture groups(BVAⅠ, BVAⅡ, BVAⅢ). 2. Quantitation of T-cell was increased with the statistical significance in all the bee venom aqua-acupuncture groups as compared with the control group. But there was no significance between bee venom aqua-acupuncture groups(BVAⅠ, BVAⅡ, BVAⅢ). 3. Quantitation of B-cell was increased with the statistical significance in all the bee venom aqua-acupuncture groups as compared with the control group. But there was no significance between bee venom aqua-acupuncture groups(BVAⅠ, BVAⅡ, BVAⅢ). 4. Lymphocyte proliferation was increased with the statistical significance in all the bee venom aqua-acupuncture groups as compared with the control group. But there was no significance between bee venom aqua-acupuncture groups(BVAⅠ, BVAⅡ, BVAⅢ). 5. Natural killer cell activity was not increased as compared with the control group in all the bee venom aqua-acupuncture groups. And there was no significance between bee venom aqua-acupuncture groups(BVAⅠ, BVAⅡ, BVAⅢ).

저출력 RFID 시스템에서 인식거리 확대를 위한 전력 공급용 RF Shower 시스템

鄭珍旭(Jin-Wook Jung),裵宰賢(Jae-Hyun Bae),吳夏嶺(Ha-Ryoung Oh),成榮洛(Yeong-Rak Seong),宋昊俊(Ho-Jun Song),張炳埈(장병준),崔炅(Kyung Choi),李政錫(Jung-Suk Lee),李弘倍(Hong-Bae Lee),李學龍(Hak-Yong Lee),金鍾旻(Jong-Min Kim),申在澈(Jae-Che 대한전기학회 2006 전기학회논문지 D Vol.55 No.12

In this paper, we presented the synchronization module between RF shower system and RFID Reader to extend interrogating range on Mobile RFID system, Costas Loop and FPLL(Frequency/Phase Lock Loop) were used. We achieved compromised range of 3㎒ locking frequency, 1㎳ locking time and figured out remarkable Hopping frequency of the Reader. The prototype of the new designed RFID system has been tested with ISO18000-6 type-B Tag. The read range between designed RFID Reader and Tag has been measured, it increased triple times by adjusting the Shower system output level.