Diallel Cross Analysis of Characters in Barley

정원복,정대수,무전화의,좌등화광,Chung, Won-Bok,Chung, Dae-Soo,Takeda, Kazuyoshi,Sato, Kazuhiro 한국생명과학회 1997 생명과학회지 Vol.7 No.1

In this experiment, gene actions were analysized for seven barley parents in order to obtain basic information on their genetic improvement by diallel crosses. The results obtained were summarized as follows. In analysis of variance, additive, dominant, maternal and reciprocal effects were observed significantly for culm length, tiller number, number of spiked per plant, culm diameter, awn length, leaf width, number of grains per spike, and 1000 grain weight. Over-dominance was shown by Vr-Wr graphic analysis in five characters such as tiller number, number of spikes per plant, length of flag leaf, number of grains per spike, and 1000 grain weight, and partial dominance in four characters such as culm length, culm diameter, awn length, and leaf width. Component of genetic varience analyzed for four characters such as culm diameter, awn length, length of flag leaf, and leaf width showed that additive effects were higher than dominant effects. Culm length, tiller number, number of spikes per plant, number of grains per spike, and 1000 grain weight showed dominant effects higher than additive effects. The narrow-sense heritability for awn length, leaf width, and number of grains per spike showed high values as more than 0.62, while broad-sense heritability for culm length, number of spikes per plant, culm diameter, awn length, leaf width, number of grains per spike, and 1000 grain weight showed high values as more than 0.65.

벼의 종자특성에 대한 유전분석

정원복,오주성,황필성,Chung, Won-Bok,Oh, Ju-Sung,Hwang, Pil-Seong 한국생명과학회 2007 생명과학회지 Vol.17 No.4

벼 잡종 $F_1$세대의 종자특성에 대한 유전분석과 잡종강세에 대한 결과는 다음과 같다. 1. $F_1$세대의 유전력은 1수립수가 97.99%로 가장 높았으며 천립중, 완전립율의 순으로 나타났고 완전립율이 입장이나 입폭에 비하여 높은 유전력을 보였다. 2. 교배친의 형질간 상관관계는 완전립율과 1수립수, 입장과 천립중간에 유의한 정의 상관을 보였으나 입장과 1수립수, 입폭과 완전립율간에 유의한 부의 상관을 보였다. 그리고 $F_1$세대의 형질간 상관관계는 입장과 입폭간에 높은 부의 유전상관을 보였으나 표현형상관에서는 유의성이 인정되지 않았다. 입장과 천립중, 입폭과 천립중간에도 높은 정의 유전상관을 나타내었으나 표현형상관은 유의하지 않았다. 3. heterosis는 천립중이 7.71%였고, 다음이 1수립수, 완전립율의 순이었다. heterobeltiosis 또한 천립중이 5.29%였고, 다음이 1수립수, 완전립율의 순이었다. 4. 교배조합간의 heterosis는 입장이 1(밀양165호${\times}$장령도)조합에서 13.33%, 입폭이 12(신동진벼${\times}$장령도)조합에서 13.79%, 완전립율이 3(밀양165호${\times}$남천벼)조합에서 16.11%, 천립중이 5(밀양165호${\times}$동진찰벼)조합과 11(동진찰벼${\times}$고시히까리)조합에서 각각 12.64%, 12.13%, 1수립수가 11(동진찰벼${\times}$고시히까리)조합에서 22.83%로 높았다. 그리고 heterobeltiosis는 입장이 1(밀양165호${\times}$장령도)조합에서 8.80%, 입폭이 12(신동진벼${\times}$장령도)조합에서 10.00%, 완전립율이 3(밀양165호${\times}$남천벼)조합에서 13.06%, 천립중이 5(밀양165호${\times}$동진찰벼)조합과 11(동진찰벼${\times}$고시히까리)조합에서 각각 10.01%, 10.83%, 1수립수가 11(동진찰벼${\times}$고시히까리)조합에서 21.40%로 높았다. The study were performed genetic analysis for seed characters of 6 parents of rice cultivar and 15 $F_1$ hybrids. In terms of heritability, The highest value was observed in the character of No. of grains/spike. Second values was showed 1,000 grains weight and head rice ratio was high value than grain length and width. In an analysis of correlation relation of parent, significant positive coefficients were observed in head rice ratio and No. of grains/spike, grain length and 1,000 grains weight, but the negative coefficients were significantly revealed between grain length and No. of grains/spike. Phenotype coefficient was lowly observed in the relation of grain length and 1,000 grains weight, grain width and 1,000 grain weight that highly positive genetic coefficient was showed in an analysis of correlation relation of $F_1$. In terms of heterosis, highest value was showed 1,000 grains weight and second value was No. of grains per spike and 1,000 grains weight and second value was No. of grains per spike in terms of heterobeltiosis. In an analysis heterosis of among crossing combination, high ratio was observed 1st combination at seed length, 12th combination at seed width, 3rd combination at head rice ratio, 5th combination at 1,000 grains weight and 11th combination at No. of grains per spike. In an analysis heterobeltiosis of among crossing combination, high ratio was observed 1st combination at seed length, 12th combination at seed width, 3rd combination at head rice ratio, th combination at 1,000 grains weight and 11th combination at No. of grains per spike.

木花 二面交雜에 의한 量的形質의 遺傳分析

Won Bok Chung(鄭元福),Dae Soo Chung(鄭大守),Hae Jin Chung(丁海鎭),Kwon Yawl Chang(張權烈) 한국육종학회 1992 한국육종학회지 Vol.24 No.3

The experiment was conducted to get basic information for cotton breeding program through seven-variety diallel cross population. Significant variance analysis was observed in days to flowering, days to maturity, plant height, length of stem internode, bolls per plant, boll weight, seeds per boll, lint weight per boll, 100-seed weight, staple length, length of seed, width of seed and lint percentage. Based on the Vr-Wr graphical analysis, the characters, days to flowering, bolls per plant, seeds per boll, lint weight per boll, 100-seed weight, staple length, length of seed and width of seed were found to inherit incomplete dominance, and the characters of days to maturity, plant height, length of stem internode, boll weight and lint percentage were assumed to inherit over dominance. The component of genetic variance analysis for days to flowering, lint weight per boll, 100-seed weight, staple length, length of seed, width of seed and lint percentage showed that additive effects were higher than dominant effects. The narrow-sense heritability(h²ns) for days to flowering, bolls per plant, boll weight, seeds per boll, lint weight per boll, 100-seed weight, staple length and length of seed showed high values as more than 0.41. The estimate of broad-sense heritability(h²bs) value was higher than that of h²ns because of the low importance of dominance effects.

Non-inverted Meniscus식 모세관 구조물을 이용한 소형 루프히트파이프에 관한 실험적 연구

정원복(Won Bok Chung),박수용(Soo Yong Park),V.V.Doctarau 대한기계학회 2007 대한기계학회 춘추학술대회 Vol.2007 No.5

Experimental study was conducted to evaluate the performance of a miniature loop heat pipe (MLHP) with non-inverted meniscus type capillary structure. All parts of MLHP in this study were made of copper including the capillary structure and the distilled water was used as a working fluid of MLHP. The outer diameter of evaporator was 9 ㎜ and its length was 119 ㎜. The effective pore size of the capillary structure was 30 micron and its porosity was 60%. The vapor transport line, the liquid transport line and the condenser were consisted of single 4.0 ㎜ copper tube. The distance between the evaporator and the condenser region was 200 ㎜ and the length of the loop was 969 ㎜. This MLHP was operated successfully at any orientation but the gravity highly influenced the thermal performance of the MLHP. The maximum thermal load was 130 watts at the bottom heat mode and the 20 watts at the top heat mode.

소결 조건에 따른 니켈 윅 루프히트파이프 작동 특성

정원복(Won Bok Chung),황선홍(Sung Hong Hwang),박철민(Chul Min Park),김윤성(Yoon Sung Kim),김상식(Sang Sik Kim) 대한기계학회 2015 대한기계학회 춘추학술대회 Vol.열공학 No.-

지상용 소형 루프히트파이프 성능에 관한 연구

정원복(Chung Won Bok),부준홍(Boo Joon Hong) 대한기계학회 2004 대한기계학회 춘추학술대회 Vol.2004 No.11

A small-scale loop heat pipe with polypropylene wick was fabricated and tested for its thermal performance. The container and tubing of the system was made of stainless steel and several working fluids were used to see the difference in performance including methanol, ethanol, acetone, R134a, and water. The heating area was 35 mm x 35 mm and there were nine axial grooves in the evaporator to provide a vapor passage. The pore size of the polypropylene wick inside the evaporator was varied from 0.5 m to 25 m. The size of condenser was 40 mm (W) x 50 mm (L) in which ten coolant paths were provided. The inner diameter of liquid and vapor transport lines were 2.0 mm and 4.0 mm, respectively and the length of which were 0.5 m. The PP wick LHP was operated with methanol, acetone, and ethanol normally. R134a was not compatible with PP wick and water was unsuitable within operating limit of 100°C. The minimum thermal load of 10 W (0.8 W/cm2) and maximum thermal load of 80 W (6.5 W/cm2) were achieved using methanol as working fluid with the condenser temperature of 20°C with horizontal position.

70W/㎠급 루프히트파이프 개발

정원복(Won Bok Chung),황선홍(Seon Hong Hwang),김윤성(Yoon Sung Kim),김상식(Sang Sik Kim) 대한기계학회 2015 대한기계학회 춘추학술대회 Vol.2015 No.11

Loop heat pipes (LHPs) are useful to transfer large heat in the long distance regardless of gravity heat. As the previous study, reversible loop heat pipe (RLHP) could be able to transfer for 2 m with 1200 W (35.5 W/㎠) in the 0.2 m gravitational head range. We had conducted test to figure out heat flux limit applied by sintered metal wick that we had developed for the RLHP. To conduction the heat flux test, we made two LHPs having an evaporator which was applied nickel wick with porosity 67%, average pore size 2.6㎛. The inside of the evaporator wall was designed for micro grooves with circumferential direction and the pitch of the grooves of two LHPs was 0.25 ㎜ and 0.30 each. The condenser of the LHPs had double wall pipe and 10°C coolant had went through. As the result, LHP which had 0.25 ㎜ pitch grooves was better performance than the LPH of 0.3 ㎜ pitch grooves. The maximum heat flux was 73 W/㎠

가지의 F₁ 세대에 대한 유전 분석

정원복(Won-Bok Chung),정순재(Soon-Jae Jeong),오주성(Ju-Sung Oh),황필성(Pil-Seong Hwang) 한국원예학회 2003 Horticulture, Environment, and Biotechnology Vol.44 No.1

평판형 증발부를 가지며 암모니아 - 폴리프로필렌 윅을 사용한 루프식 히트파이프의 성능

정원복(Won Bok Chung),김병수(Byong-Soo Kim),부준홍(Joon Hong Boo) 대한설비공학회 2004 대한설비공학회 학술발표대회논문집 Vol.2004 No.-

진공관형 태양열 집열기용 히트파이프 개발 연구

정원복(Chung Won Bok),정의국(Jung Eui Kuk),장혁(Jang Hyuk),부준홍(Boo Joon Hong),곽희열(Kawk Hee Youl) 한국태양에너지학회 2003 한국태양에너지학회 학술대회논문집 Vol.- No.-