• 한국약용작물학회지
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• 제24권1호
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• pp.27-30
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• 2016

Background : This text was conducted to evaluate the distribution, shape characteristics and habitat condition of Crypsinus hastatus in Buyeo Korea. Methods and Results : In Buyeo, Crypsinus hastatus was distributed at an altitude of 31.2 m, a slope of 82.5% and a distance from river water of 27.2 m. The leaf blade was oblong, 2.7 cm long, 1.2 cm wide with a petiole length of 2.3 cm. The total population comprised 2,100 individuals, with the highest proportion being individuals with a leaf blade of length 0.5 - 1 cm. The temperature and light intensity of the growth point were lower, but the humidity higher, than that of growth around. The chemical properties of the soil were as follows: pH 4.42, organic matter 77.99 g/kg, electrical conductivity 0.50 dS/m, nitrate nitrogen 20.50 mg/kg and available phosphate 165.7 mg/kg. Exchangeable cation content of potassium, magnesium, sodium and calcium was 0.35, 0.70, 0.09 and $2.04cmol^+/kg$, respectively. Conclusions : In Buyeo, Crypsinus hastatus was distributed in $5.3m^2$ area of Nakhwaam, Naeseongri and Jeongamri. However, the population of the medicinal resources seemed to decrease owing to the poor environmental conditions of the habitat.

• 한국환경복원기술학회지
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• 제7권2호
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• pp.1-11
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• 2004

The purpose of this study was to determine usability as potted flowers and garden plants by controlled plant height using growth retardants. There was no significant difference on the dwarfing effect according to the degree of exposure the sun, but growth was well under full exposure to the sun. The plant height was decreased by application of Cycocel (CCC), Bonzi (paclobutrzol), Ancymidol, and Uniconazole compared to the control group, and treatment of Bonzi $5mg{\cdot}L^{-1}$ was most dwarfing effect for both full sun exposure or 70% controlled shading condition. No consistent different was found in stem diameter, leaf color change, the content of chlorophyll and anthocyanin when the concentration of plant growth retardants was altered. These factors were affected only by light intensity. In comparison to the results of the control group, leaf length, leaf width, plant width and petiole length were all reduced by the application of growth retardants.

• 한국육종학회지
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• 제42권5호
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• pp.431-438
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• 2010

Anthers of sweet pepper $F_1$ cultivar 'Special' were cultured on Dumas De Vaulx (C medium), supplemented with $0.1mgL^{-1}$ 2, 4-D and $0.1mg{\cdot}L^{-1}$ kinetin with 3% sucrose, and 0.32% phytagel. The calluses obtained were further sub-cultured on Murashige and Skoog (MS) medium without growth regulators for regeneration. Regenerated plantlets were grown in plastic pots under plastic house and characterized their cytological and morphological characters in spring, 2008. Twenty percent plantlets were identified as haploid plants after chromosome and ploidy analysis. Haploid plants contained 12 chromosomes, high stomatal density with small stomatal length as compared to diploid plants. Stomatal length in haploids was 23.3% smaller than diploids. Haploid plants were characterized as small leaf and petiole size, poor vigor, thin stem and short plant height, short internodes and small flower buds, fruit size and fruit weight as compared to diploid plants and most of the haploid fruits were seedless. SP55, SP62, SP68, SP72 and SP77 are found high yielding double haploids with high total soluble content (8.6, 8.7, 9.2, 9.1 and $9.8^{\circ}Brix$, respectively) and desirable fruit shape, and recommended them to exploit as inbred lines for heterosis breeding.

• 생물환경조절학회지
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• 제16권4호
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• pp.372-378
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• 2007

본 연구는 칼륨의 시비농도를 인위적으로 조절하여 잎들깨의 생장과 결핍증상 발현에 미치는 영향을 구명하고, 생육을 우수하게 유지할 수 있는 식물체 및 토양의 한계농도를 밝히기 위하여 수행하였다. 칼륨 결핍 증상은 노엽에서 시작되었으며, 노엽의 가장자리가 황변하고, 황변된 부위가 점차 갈색으로 변화되었으며, 갈변 후 괴사하였다. 칼륨 시비농도를 8mM까지 높일 경우 엽장과 줄기직경이 길거나 굵어졌으며, 생체중 및 건물중이 무거워지고, 엽록소 함량이 감소하였다. 생육이 우수하였던 K 8mM 시비구의 식물체당 건물중과 K 함량이 5.01g과 2.76%였으며, 생장억제를 방지하기 위해서는 1.7% 이상의 K 함량을 가져야 한다고 판단되었다. 칼륨을 8mM로 시비한 처리의 엽병추출액내 K 농도가 $12,289mg{\cdot}kg^{-1}$였고, 1:2로 추출한 토양농도가 $11.65mg{\cdot}L^{-1}$였으며, 엽병추출액은 $8,700mg{\cdot}kg^{-1}$이상, 토양용액은 $4.5mg{\cdot}L^{-1}$을 유지하도록 시비하여야 수량 감소를 방지할 수 있다고 판단되었다.

• 한국작물학회지
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• 제39권3호
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• pp.245-255
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• 1994

White clover는 많은 장점에도 불구하고 계속방목에 대한 적응력이 낮아 존속연한이 짧은 것이 결점이다. 따라서 본 시험은 white clover 혼파초지관리에 필요한 정보를 제공하기 위하여 예취주기의 장단(7일, 14일, 28일)이 28일의 재생기간동안 잎의 크기가 다른 white clover 품종들(Osceola, Huia, S184)의 수량과 재생에 미치는 영향을 조사하기 위하여 온실에서 pot 시험으로 실시한 바 그 결과를 요약하면 다음과 같다. 1. 28일의 처리기간중 수확 건물중은 대엽종 Osceola가 타품종에 비하여 많았고, 예취주기를 28일에서 7일로 줄임으로써 현저히 감소하였다. 2. 재생기간중 개체당 건물중은 주로 잎과 엽병의 증가에 기인하였고 예취 후 14일부터 대엽종 Osceola가 타품종에 비하여 많았다. 3. 개체당 엽면적과 복엽당 엽면적은 28일의 재생 기간동안 꾸준히 증가하였으나 예취를 28일에서 7일로 줄임으로써 현저히 감소하였다. 대엽종 Osceola의 개체당 엽면적과 복엽당 엽면적은 타품종에 비하여 많았다고 하나, 예취 후 28일의 개체당 엽면적에는 품종간 차이가 없는 것으로 측정되었다. 4. 예취주기를 짧게 할수록 엽수와 엽병장이 감소하였으며 예취 후 14일부터 타품종에 비하여 소엽종 S184가 많은 엽수를, 대엽종 Osceola가 긴 엽병을 확보하고 있는 것으로 조사되었다. 5. 개체당 포복경장과 분지경수는 재생기간동안 급격히 증가한 반면 소엽형 S184에서 가장 길고 많았으며 예취주기를 28일에서 7일로 줄임으로써 현저히 감소하였다.

• Journal of Biosystems Engineering
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• 제21권3호
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• pp.315-324
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• 1996

This study was one of a series of studies on application of machine vision and image processing to extract the geometrical features of plants and to analyze plant growth. Several algorithms were developed to measure morphological properties of plants and describing the growth development of in-situ lettuce(Lactuca sativa L.). Canopy, centroid, leaf density and fractal dimension of plant were measured from a top viewed binary image. It was capable of identifying plants by a thinning top viewed image. Overlapping the thinning side viewed image with a side viewed binary image of plant was very effective to auto-detect meaningful nodes associated with canopy components such as stem, branch, petiole and leaf. And, plant height, stem diameter, number and angle of branches, and internode length and so on were analyzed by using meaningful nodes extracted from overlapped side viewed images. Canopy, leaf density and fractal dimension showed high relation with fresh weight or growth pattern of in-situ lettuces. It was concluded that machine vision system and image processing techniques are very useful in extracting geometrical features and monitoring plant growth, although interactive methods, for some applications, were required.

• 식물분류학회지
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• 제51권4호
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• pp.363-371
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• 2021

Vicia bifolia Nakai (Fabaceae) and Cyperus compressus L. (Cyperaceae) have been ambiguous in terms of their distribution and taxonomic entities in Korea. The existence of these two taxa was confirmed when V. bifolia and C. compressus was found on Jellabuk-do, Gyeongsangnam-do, and Jeju-do. Vicia bifolia is similar to V. unijuga by having a pair of leaflets but is distinguished by the length of the petiole, the size and degree of longevity of the bracts, and the shape of the stipules. Cyperus compressus was found on Jeju-do, is similar to C. tenuispica, C. haspan, and C. flaccidus, but is distinguished by the branching pattern of the inflorescences and the size of scales and achenes. A description, differences from related species, a key to the taxa and photographs of Korean Vicia bifolia and Cyperus compressus are provided in this study.

• 한국작물학회:학술대회논문집
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• 한국작물학회 2022년도 추계학술대회
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• pp.319-319
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• 2022

Dill(Anethum graveolens L.) is a buttercup family, and flowers, leaves, stems, and seeds are all mainly used as spices. This study was carried out to discover and propagate genetic resources for the development of plant-derived medicinal fragrance materials, and to establish a database. In order to investigate the genetic characteristics of dill and to extract natural essential oils, 50 resources were parceled out the genetic resource center, sown, germinated, and then formally cultivated in the test research field. After sowing and propagation of 50 dill resources, the characteristics of each individual such as plant height, the diameter of polychasium during flowering, and the number of small inflorescences were investigated. The flowering period of dill was around May 31 to June 17, and about 10% of the proliferating population flowered around May 31. The plant length of dill was 32-14 lcm, and the length of petiole was 1~16cm, showing an average of 5cm. The color of the stem and leaf color was referred to the RHS Color chart, and the colors were classified as 44S, 19 V, and 75DI. Uses as many resources as possible with 35 resources equivalent to 19V. Inflorescences are lateral and opposite, polychasium inflorescences are somewhat flat at the upper part and have a diameter of 4.5~20cm, and divergent inflorescences are irradiated with 5~86 multiple flowers. The number of pedicels is 16-74, and the length of the pedicel is 1-18cm spread sideways or the length is different from each other.

• The Korean Journal of Ecology
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• 제20권5호
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• pp.339-345
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• 1997

The Arisaema robustum, perennial non-stem herb, population in the temperate forest of Sanseong-ri, Joongbu-myeon, Kyonggi Province was studied for leaf pattern and leaf growth from 1993 to 1995. The area of each side leaflet was larger than that of the apical leaflet in 3-leaflet form plants. But there was no significant difference among the leaflets (apical, 1st side and 2nd side leaflet) in t-testing of the 5-leaflet form plants. The specific leaf area (SLA) of the 3-leaflet form plant was greater than that of the 5-leaflet form plant, and the difference was significant at 0.1%. But differences of SLA value among the leafleats of the same leaflet form plants were minor. The area of leaflets or total leaf area was inversely proportioned to the their SLA values. Especially, the correlation coefficients (CC) between leaf area and SLA in apical leaflets and side leaflets of the 3-leaflet form plant compared to the 1st side leaflets of the 5-leaflet form plants were significant at the level of 1%. The differences between two sides in the dry weight and area of leaflets starting from the apical leaflets were about 5%. The CC values between attributes of the petiole (length and dry weight) and those of leaf blades (dry weight, leaf area and SLA) were high and significant at a 1% level. Especially, The CC value between the dry weight of the petioles and that of the leaf blades was higher than any others (r=0.952). The morphologies of the leaf margins were entire, medium serrate and serrate, and the same plant showed the same type from year to year. The plants usually had one leaf and occasionally 2 leaves. 1-leaf plants usually had 3 or 5 leaflets and occasionally 2 or 4 leaflets. Each year, the ration of individuals having the same number of leaflets was 72%, and that of individuals having a different number of leaflets was 27.54% (an increase of 20.4% and a decrease of 7.1% respectively). In the individuals increasing in the number of leaflets, the ration of individuals shifting from the 3-leaflet from to the 5-leaflet form was 14%. The increase ration of leaf area per individual a year was 37%, and the increase ratios of the plants increasing in leaflets were 60-70% regardiness of leaflet increase. The ratios of leaflet length/breadth were about 1-2, and the variations of those were 0.182-0.286 each year (12-20%).

• 한국약용작물학회지
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• 제13권1호
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• pp.21-29
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• 2005

경남지역의 자생 둥굴레속 47개 수집종의 유연관계를 분석하기 위한 기초자료로서 수집종의 생장 몇 형태 관련 형질, 잎마름병 감염정도, 이들 형질간 상관관계를 분석하였던 바 그 결과는 다음과 같다. 1. 초장은 산둥굴레에서 가장 길었던 반면, 용둥굴레에서 가장 짧았다. 한편 줄기의 생장형태는 직립형을 포함한 3개군으로, 줄기색깔은 녹색을 포함한 3개군으로 분류하였다. 2. 염의 형태로는 타원형을 포함한 5개군으로, 엽병은 존재 유무로부터 2개군으로, 엽병의 색깔은 녹색을 포함한 3개군으로 분류되었으며, 그 중에 특이하게 피침 형태로 엽연이 자색인 1개종이 수집되었다. 3. 꽃은 화형이 항아리형, 통형, 조롱박형의 3개군으로, 화색은 흰색을 포함한 3개군으로 분류되었으며, 특별하게 조롱박형인 1개 수집종은 연녹색을 띄고 있었다. 화사는 실린더형과 편평형으로, 화경의 색깔은 자색을 포함한 4개군으로 분류되었으며, 포의 존재 유무와 형태에 따라 4개군으로 분류하였다. 4. 과실은 둥근형 등 3개군으로 분류되었으며, 백과중은 둥굴레에서 가장 무거웠던 반면, 용둥굴레에서 가장 가벼웠다. 5. 둥굴레 잎마름병에 대한 저항성이 아주 강한 것은 2종, 이병율이 7% 이하인 것은 7개종으로 조사되어서 근경수량을 증대할 수 있는 저항성 유전자원이 자생하고 있음을 알 수 있었다. 6. 제형질의 상관관계에서 근경수량과 관련된 근경중은 초장, 경직경, 엽수, 엽장, 엽폭, 지하경 직경과 정의상관을 보였으나 근경수량에 가장 큰 영향을 미치는 잎마름병 이병율은 초장, 경직경, 엽수, 엽장, 백립중, 근경중, 지하경 직경과 부의상관을 보였다.