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栽植樣式, 種子親 對 花粉親比率 및 密度가 단옥수수 單交雜種 採種量에 미치는 影響
Keun Yong Park(朴根龍),Byung Han Choi(崔炳漢),Seung Ue Park(朴勝義),Young KiI Kang(姜榮吉) 한국육종학회 1986 한국육종학회지 Vol.18 No.3
A new high-yielding single cross sweet corn hybrid, Danok 1, was developed at the Crop Experiment Station in 1983. Plant height, 100-kernel weight, and average ear weight of seed parent, KSS-1 are smaller than those of pollen parent, KSS-2. The ear length and diameter are similar in both inbreds. For optimum production practice of sweet corn hybrid seed, two, three and four rows of seed parent to one row of pollen parent were compared using interplanting and conventional planting methods of pollen parent, and with plant populations of 6,666, 8,000, 8,888 and 10,000 plants per 10 ares. The highest seed production planting pattern was one row of pollen parent to four rows of seed parent with 6,666 plants per 10 ares. For full utilization of limited land area for seed production and for placing the pollen parent closer to the seed parent rows, interplanting of pollen parent between normal seed parent rows and conventional four seed parent rows to one pollen parent row planting pattern also were high in hybrid seed production with 8,333 plants population per 10 ares. High direct effects on seed yield were detected for ear-bearing height, stem length, ears per plant and ear diameter of seed parent. High coefficients of determination for ears per plant, stem length of pollen parent and ear length with seed yield also suggest possible high associations of the seed parent’s yield components and pollen parent’s growth including stern length. It was determined as a recommendable practice to remove the pollen parent just after pollination was complete by cutting. Removing the pollen parent at this stage prevented grain formation of pollen parent and possible seed contamination at harvest. Competition with developing seed parent for nutrients or available moisture was minimized thus increasing kernel size and seed yield.
시호의 조직배양묘와 배양식물의 종자를 이용한 프러그묘 생산
박철호(Cheol Ho Park),유창연(Chang Yeon Yu),서정식(Jeong Sik Soo),김기식(Ki Sik Kim),박승의(Seung Ue Park),장병호(Byoung Ho Chang) 한국약용작물학회 1995 한국약용작물학회지 Vol.3 No.3
This study was conducted to establish technologies for plug seedling production using somatic embryos-derived regenerants and their seeds in Bupleurum falcatum L. Among distilled water, GA(0.1㎎/ℓ) and putrescine(0.1㎎/ℓ) treated to regenerants for acclimatization, GA was most effective to develop shoots and roots, 1/2X MS medium and NAA 0.1㎎/ℓ+BA 0.5㎎/ℓ enhanced the growth rates of the regenerants and increased dry weight. Activated charcoal effected to grow markedly leaves and roots of the regenerants at the level of 0.4%. Regenerants increased their plant height, root length and dry weight at 30℃. Plug seedlings originated from seeds of the tissue culture regenerants showed the maxium growth on the mixture of peatmoss soil(2) and mountain sand(1). Root length, leaf area and dry weight of plug seedlings increased significantly when No. 1, 2 and 3 of Wondergrow solution were mixed in the ratio of 1.3-0.9-0.1. Light supplement(4%) and high temperature(30℃) promoted the growth of plug seedlings as well as dry weight. Ninety days seedlings were more vigorous and adaptable for transplanting than other seedlings.
박춘성(Chun Seong Park),채영길(Young Kil Chai),김정옥(Jeong Ok Kim),민황기(Hwang Ki Min),박승의(Seung Ue Park) 한국농어촌관광학회 1996 농어촌관광연구 Vol.3 No.1
This study was conducted to find out the method of tourism farms management suitable to Kangwon province. Among 30 tourism farms which were designated by Kangwon provincial government, 15 farms were selected for surveying. Beside these farms, 3 different farms were analyzed.<br/> The tourism farms management can't flourish because of the lack of tourism agricultural goods and manager's apprehension about the tourism agriculture. The use period of the tourism farms are limited chiefly in the summer because the farmers and pubic officers consider too much about the factor of natural environment when they decide the position of tourism farms.
Seon Woo Cha(車善佑),Sang Il Park(朴相一),Seung Keun Jong(鄭丞根),Seung Ue Park(朴勝義) 한국육종학회 1995 한국육종학회지 Vol.27 No.1
This study was carried out to investigate the relationships among grain filling characteristics (duration and rate of grain filling), grain yield and yield components in twenty eight corn hybrids with different maturity. Highly significant correlations were observed between the effective grain filling period and days to silking, kernel weight. Highly positive correlation were detected between the rate of grain filling during the effective grain filling period and kernel weight, kernel width and kernel volume. Significant positive correlations were detected between total grain filling period and rate of grain filling of lower part of the ear, kernel weight and grain yield.
Young Hee Son(孫永姬),Keun Yong Park(朴根龍),Byung Han Choi(崔炳漢),Seung Ue Park(朴勝義),Rae Kyeong Park(朴來敬) 한국육종학회 1990 한국육종학회지 Vol.22 No.3
To shorten down our breeding cycle by the di-haploid induced through the anther culture technique, factors affecting the anther culturability in maize were revised. Among 13 hybrids tested, P3424 and Ching-Huang 13 were best genotypes for anther culture. The induction ratio were 0.71% in Ching-Huang 13 and 0.64% in P3424. Ninety three embryoids induced from 49,200 anthers plated and 11 plantlets produced from these embryoids. Microspores in early-uninucleate stage responded to culture in Ching-Huang 13. Leaf number can be a good growth index for the tassels bearing the uninucleate microspores. Anthers in one tassel varied in their developmental stages. Anther culture efficiency improved by the cold pretreatment and osmotic pressure. A 9℃-14 days treatment brought the best result. The effect of osmotic pressure was rather remarkable ; maximum of 5 times in producing plantlets. Among 11 plantlets produced 4 plants were survived and were detected as haploids. Through colchicine treatment 2 kernels were harvested. Further studies should be followed to confirm the above results.
옥수수 自殖系統과 F₁에 대한 登熟期間 및 登熟速度 比較
Seon Woo Cha(車善佑),Sang Il Park(朴相一),Seung Keun Jung(鄭丞根),Seung Ue Park(朴勝義) 한국육종학회 1994 한국육종학회지 Vol.26 No.4
In order to understand the effects of duration and rate of grain filling of corn inbred lines and hybrids, twenty eight corn hybrids from diallel crosses of eight inbreds were planted at Experimental Farm of Chungbook Provincial Rural Development Administration in 1988. Measurements for characters were made on the upper and the lower parts of the same ear. Lag period of kernel from upper part of the ear ranged from 11 to 15 days, while lag period of kernel from lower part of the ear ranged from 9 to 13 days in parental inbreds. In F₁, hybrids, the upper part of the ear showed 10 to 16 days of lag period and the lower part of the ear showed 9 to 12 days. Effective grain filling periods for the parents ranged from 19 to 30 days regardless of the ear position, and the average period was about 24 days. In F₁, the effective grain filling period was from 23 to 29 days in the lower part(average 26.3 days), and the effective grain filling period was from 20 to 31 days in the upper part(average 24.2 days). Mean difference of effective filling period was from 20 to 31 days in the upper part(average 24.2 days). Mean difference of effective grain filling period between the lower and upper parts of the ear was about 2.1 days, and the upper part of the ear was a few days shorter than the lower part of the ear. Total grain filling period in the upper and lower part of the ear of parental lines were about 40 days and 39 days, respectively, and in the F₁ these were about 42 days and 43 days, respectively, and in the F₁ these were about 42 days and 43 days, repectively. Days to black layer appearance in the upper and the lower parts of the F₁ were 41 and 42 days and 43 days, respectively. Days to black layer appearance in the upper and the lower parts of the F₁ were 41 and 43, respectively, and these were about one to 3 days later than the 40 days of parental lines. The latest days of black layer appearance for the F₁ were 49 days of FR2A/KS42 and the most quick days of black layer appearance for the F₁ were 47 days of A508/A662. The rate of grain filling during lag period of parents was 84㎎/100kernel (k)/day at the upper part and 107㎎/l00k/day at the lower part of the ears. The rate of grain filling during the lag period of F₁ hybrids was 101㎎/100k/day at the upper part and 142㎎/100k/day at the lower part. The rate of grain filling during effective filling period of parents was 700㎎/100k/day at the upper part and 814㎎/100k /day at the lower part of the ear. The rate of grain filling during the effective filling period of F₁ was 878㎎/100k/day at the upper part and 944㎎/100k/day at the lower part of the ear. The rate of grain filling of the F₁ was a little faster than that of the parental lines.
Seon Woo Cha(車善佑),Sang Il Park(朴相一),Seung Keun Jong(鄭丞根),Keun Yong Park(朴根龍),Seung Ue Park(朴勝義) 한국육종학회 1988 한국육종학회지 Vol.20 No.1
Six corn inbreds and 15 F₁ among them were used to study the combining ability for agronomic characteristics. General combining ability(GCA) was more important than specific combining ability (SCA) in ear node, lodging, row number (ear) and 100 kernel weight. Ga 209 showed the highest GCA effects in plant height, ear height and lodging, and Va 35 showed the highest GCA effects in ear length, kernel number per row, kernel number per ear and grain yield, while B 84 showed the lowest GCA effects in ear length, ear diameter, 100 kernel weight and yield. The F₁ between B 68 x Ks 15 showed the highest SCA effects in ear length, kernel number per ear and grain yield, and the F₁ between B 68 x Ks 8 showed the lowest SCA effects in the other all characters except days to tassel and silk. Grain yield was highly sinificantly correlated with plant height, ear height, ear length, ear diameter, kernel number per row, kernel number per ear and 100 kernel weight.
二面交雜에 依한 옥수수 葉面積構成 形質의 組合能力과 遺傳分析
Seon Woo Cha(車善佑),Sang Il Park(朴相一),Seung Keun Jong(鄭丞根),Keun Yong Park(朴根龍),Seung Ue Park(朴勝義) 한국육종학회 1985 한국육종학회지 Vol.17 No.4
Six corn inbreds and 15 F₁ among their were used to study the combining ability and genetic analysis of leaf area components in corn(Zea mays L.). GCA(general combining ability) was more important than SCA(specific combining ability) in LN(leaf no.), TL(total leaf length) and MW(mean leaf width). Ga 209 showed the highest GCA effects in LN, TL, TW(total leaf width), TLA(total leaf area) and LAI, while B84 showed the lowest GCA effects in LN, TLA and LAI. The F₁ between KS15 × Va35 showed the highest SCA effects in TL,TLA,ML,MW, MLA and LAI, and the F₁ between KS8 × B68 showed the lowest in all characters. Partial dominance was exhibited by LN, and over dominance was exhibited by TL, TW, TLA, ML, MW, MLA and LAI. Among 6 inbreds, Ga 209 had the most dominant genes for all characters, while Va 35 had the most recessive genes for all characters.