• 한국작물학회지
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• 제56권2호
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• pp.151-158
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• 2011

1. 수수 성숙기에 간장 길이를 조사한 결과 6개체(12.2%) 가 300 cm 이상의 길이로 바이오매스가 우량한 것으로 파악되었으며, 10개체(20.4%)정도는 200~300 cm 사이의 평균 길이를 나타내었다. 2. 성숙기의 수수 줄기 직경에는 큰 차이를 보여준 개체는 없었으며, 대부분의 수수 수집종들은 $2.2{\pm}0.1$ cm 정도의 직경을 갖는 것으로 드러났다. 3. 본 연구에 시험한 수수 수집종들은 엽장이 60~70 cm 정도의 길이에 속하는 유전자원이 22 개체가 되는 것으로 나타났으며, 7개체는 70 cm 이상되는 것으로 나타났다. 4. 엽형은 49% 정도의 개체가 협단으로 분류되었고, 대부분의 엽맥색은 백색으로 나타났다. 5. 본 연구에 사용된 대부분의 수수의 수형은 반밀수 타원형이 많은 것으로 나타났으며, 수장은 평균적으로 20~30 cm에 달하는 것으로 나타났다.

• 한국연초학회지
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• 제9권1호
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• pp.45-55
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• 1987

For some basic information in tobacco breeding, the modes of inheritance and heritabilities for the twelve agronomic and chemical characters were estimated in the study of eight varieties partial diallel set. Additive gene actions were significant for all characters except total nitrogen content and dominance gene effects were also significant for all characters. Yield, number of leaves per plant, leaf length and leaf shape index were inherited as partial dominance, and overdominance was detected for plant height, stem diameter, internode length, total alkaloid, total nitrogen and total sugar content. Dominant gene showed increasing effects in yield, plant height, stem diameter, internode length, leaf width and total sugar content, but showed decreasing effects in the other characters. The broad heritability was very high for all characters. and the narrow heritability was high in days to flower and yield, but low in internode length, total alkaloid, total nitrogen and total sugar content.

• 대한기계학회:학술대회논문집
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• 대한기계학회 2007년도 춘계학술대회A
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• pp.873-878
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• 2007

Stability of high-speed roll-to-roll printing machines is one of the most important factors that are required for the printing machines to operate properly and to obtain reasonable printing performance. This paper proposes a new model for the web-tension system of a high-speed gravure printing machine considering span-length variations due to dancer rollers, and analyzes the stability of plant dynamics of the printing machine using the proposed model. Span-length variations due to dancer motions are considered for the modeling of plant dynamics in two ways; one is to include the effect of span-length variations without considering dancer inertias and viscous frictions, and the other is to include the effect of span-length variations with considering dancer inertias and viscous frictions. The stability of the plant model is analyzed for various web-speeds using the eigenvalues of the linearized model about operating points.

• Journal of Ginseng Research
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• 제8권1호
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• pp.57-64
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• 1984

In order to clarify an effect of seedling weight on the growth pattern of ginseng, seedlings ranged from 0.4g plant to 1.8g plant were transplanted, and then the characters of 5- and 6-year-old ginseng were investigated. The characters of root and leaf, such as length and diameter of main root, root weight, leaf area, and leaf dry weight of 5- and 6-year-old ginseng originated from large seedlings were superior as compared with those from small seedlings, and percentage of missing plant was increased with the increase of seedling weight. There were, however, no significant difference in stem length, stem dry weight, number of seeds per plant and number of palmate leaves and leaflets per plant in 5- and 6-year-old ginseng and these characters were not affected by the weight of seedings transplanted. Root field per unit area was higher in seedings of above 0.6g/plant than in small seedlings.

• The Plant Pathology Journal
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• 제17권6호
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• pp.388.3-388
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• 2001

• Plant Resources
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• 제8권3호
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• pp.258-262
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• 2005

In autumn, to determine the optimal planting date and plant density of rapeseed in southern areas of Korea, Yudal variety for autumn sowing, the highest yielding variety was grown under three different planting dates and five different plant densities. Yield components such as plant height, ear length, number of seedling stand per $m^2$, number of branches and pod length were highest at the plots with Sep. 30 of planting date and 30/20 cm drilling of plant density. Yield of seed, oil and 1,000 grains weight were highest at the Sep.30 of planting date and 30/20 cm drilling of plant density. Judging from the results reported above, at optimum planting date and plant density of rapeseed seemed to be Sep.30 of planting date and 30/20cm plant density in autumn sowing.

• 한국작물학회지
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• 제51권4호
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• pp.269-273
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• 2006

Multiple linear regression analysis was conducted to interpretate the relationship between sesame grain yield and its components under early sowing cropping condition. The t test showed that stem length, number of capsules per plant, 1000 seeds weight and seed weight per plant gave significant contribution to sesame grain yield, therefore those variables were assumed to mostly influenced components to grain yield of sesame. In the stepwise regression analysis, the predicted equation for sesame grain yield per square meter (Y) was Y = -7.900 + 0.150X1 + 0.461X5 + 15.553X6 + 8.543X7. Meanwhile, F value showed that stem length, number of capsules per plant and seed weight per plant gave significant contribution to sesame grain yield, while 1000 seeds weight did not significantly show. Based on the results, it is reasonable to assume that high yield. potential of sesame under early sowing cropping condition would be obtained by selecting breeding lines with long stem length, number of capsules per plant, and seed weight per plant, which was different result at the late sowing cropping condition in which days to flowering and maturity were assumed to be more affected factors to the sesame grain yield.

• Journal of Ginseng Research
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• 제4권2호
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• pp.194-196
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• 1980

Five years old ginseng plant (Panax ginseng) with ten stems from six bud base was found in a ginseng plantation. Stems were emerged even around the rhizome base. Growth status of all stems were poor. The length of some stems was shorter than that of petiole. The shorter the stem length is the longer the petiol length.

• Journal of Plant Biology
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• 제32권4호
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• pp.363-373
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• 1989

Morphotaxonomic accounts are given to four species of Amphiroa, Rhodophyta from Cheju Island ; A. valonioides Yendo, A. itonoi Srimanobhas et Masaki, A. rigida Lamouroux, and A. misakiensis Yendo. A. valomioides has one-tiered genicula of unequal length and its semiendophytic in other Amphiroan species, whereas A. rigida has two-tiered genicula of equal length and is semi-endophytic in non-articulated coralline alga. A misakiensis has five to thirteen-tiered genicula of unequal length and forms tufts on rocks where the branches are often recumbent. A. rigida is introduced for the first time to Korean flora.

• 한국자원식물학회:학술대회논문집
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• 한국자원식물학회 2003년도 심포지엄
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• pp.38-42
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• 2003

This experiment was carried out the investigation of proper temperature of germination and growth responses of turf grass to different seedling ages. The results were as follows; 1. It was indicated that the proper temperature of germination was 30$^{\circ}C$ of day and 15$^{\circ}C$ of night, and day length was 14/10 hrs. 2. It was observed that 50 days of seedling was excellent with growth components such as number of tiller, length of tillering, number of node and internode length.