• 식물분류학회지
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• 제34권1호
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• pp.1-7
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• 2004

국내 미기록종인 수국과 (Hydrangeaceae)의 성널수국 (Hydrangea luteovenosa Koidz.)을 제주도 한라산의 성널오름 지역에서 채집하였다. 본 분류군은 습성, 잎의 길이와 폭, 엽병의 길이, 양성화의 꽃잎과 거치의 형태, 자방의 위치, 측맥과 수술의 수의 특정에 의해 한국산 산수국 [Hydrangea serrata (Thunb.) Ser.]과 등수국 [H. petiolaris Siebold & Zucc.]과 뚜렷하게 구별되었다.

• Journal of Plant Biotechnology
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• 제35권3호
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• pp.223-228
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• 2008

This study was conducted to investigate an optimal condition for shoot proliferation and regenerate shoots from in vitro leaflet and embryogenic calli from in vitro roots in rose. The effect of BAP on shoot proliferation was somewhat different depending upon genotypes or gelling agents. Leaflets with petiole cut from donor shoots which had been cultured in MS medium supplemented with 0.1 $mg{\cdot}L^{-1}$ NAA for six weeks was effective for regeneration of adventitious buds(ABs) as well as shoot elongation of Rosa hybrida cv. Sweet Pink. Culturing seven leaflet explants per petri plate($100mm{\times}15mm$) was effective for regeneration of ABs. Embryogenesis was shown in the calli induced from roots of Rosa hybrida cv. Sweet Pink cultured in the SH medium supplemented with 11 $mg{\cdot}L^{-1}$ 2, 4-D for four weeks. Color of calli induced from roots was yellow although their color was a little different as type of basal medium.

• 한국환경복원기술학회지
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• 제7권3호
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• pp.73-77
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• 2004

차즈기의 관상가치 증진 및 광도에 따른 생육반응을 알아보기 위하여 실험을 실시한 결과 차광정도에 따라 생육상태가 매우 다르게 나타났다. 초장, 수관폭, 엽병장, 엽장, 엽폭, 줄기굵기, 건물중 등 대부분이 30% 차광 시에 높게 나타나 생육이 가장 좋았으며, 차광율이 높아질수록 모두 감소하였다. 엽록소함량도 30% 차광시에 가장 높았으며, 안토시아닌함량의 경우 70% 차광시에만 감소하였을 뿐 나머지 처리구에서는 큰 차이가 없었다. 또한 70% 차광 시에는 엽색이 암자적색에서 황록색으로 변하였고, 생육이 저조하였을 뿐만 아니라 식물체가 도복하여 차즈기 고유의 관상가치가 떨어지는 결과를 보였다.

• 한국작물학회지
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• 제30권4호
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• pp.368-374
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• 1985

생장조절물질인 GA, Kinetin 및 2,4-D를 농도별로 처리하여 출아 및 생육특성을 조사하므로서 출아에 필요한 장기 저온기간의 단축 가능성을 탐색하였던 바 그 결과를 요약하면 다음과 같다. 1. 신아의 출아는 처리물질중 GA효과가 가장 컸으며 처리농도가 증가할수록 조기출아되어 출아기간이 단축되었고 출아율도 높았다. 2. GA처리는 지상부 생육을 크게 신장시켰으며 특히 경장 엽병장의 신장을 촉진시켰다. 3. GA 50ppm, 100ppm처리구는 근중을 크게 증가시켰다. 4. GA처리농도가 높을수록 조기에 지상부 생육이 완료되었다. 5. 뇌포제거구는 무제거구에 비하여 출아가 다소 빠른 경향이나 생육은 대체로 비슷하였다.

• 한국작물학회지
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• 제54권4호
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• pp.422-426
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• 2009

Sweetpotato is one of the important starch crops, current more considered as an industrial crop rather than food because it has higher starch content (over 80% of biomass), it is used for bio resources for industrial area. In this study, we generated S598A (a mutant gene of oat phytochrome A) sweetpotato plant using Agrobacterium-transformation method. Morphological characteristics of S598A plant were compared with the wild type sweetpotato, S598A had darker green leaves, increased chlorophyll content higher than to two-fold, delayed leaf senescence, shorter plant height (60% shorter than that of the wild type), more number of leaves and petioles about 1.8-fold, shorter petiole length (30% shorter), 1.2-fold more branches and 1.6-fold thicker stem diameters. From this study, S598A plants with such phenotypic characteristics might be able to use the solar energy efficiently, to have increased tolerance to biotic and abiotic stresses and finally to increase productivity (not only starch yield but also root biomass yield). S598A sweetpotato lines are under field trials.

• The Plant Pathology Journal
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• 제17권5호
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• pp.295-299
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• 2001

The relative density of phytoplasmas in witches'broom (WB)-infected jujube trees was investigated using compatitive polymerase chain reaction (PCR). During dormant and defoliating seasons, the densities of phytoplasmas were about the same in roots and twigs. In early growing season, the density showed the highest rates in roots, then in twigs and in petioles. however, the density was highest in petioles and the lowest in roots during actively growing season. Throughout the year, root samples did not show any serious fluctuation compared with that of t2wigs and petioles. Density was lowest during actively growing season in root samples. In contrast, petiole sample densities varied to a great extent depending on the season, very high during actively growing season, but very low during the early growing season, In twig samples, the densities were very high and almost the same in both defoliating and dormant seasons. Among the parts of the trees, phytoplsma density was the most stable in root samples throughout the year. The highest densities of phytoplasmas were about the same in all tree parts. These results suggest that the phytoplasmas may overwinter not only in roots but also in twigs, and that multiplication rate of phytoplsma becomes very high right after the early growing season.

• Journal of Plant Biotechnology
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• 제4권4호
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• pp.171-178
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• 2002

Chlorophyll (Chl) fluorescence imaging was used to investigate the effectiveness of in vivo incorporation methods for two chemicals, 3-(3',4'-dichlorophenyl)-1,1-dimethylurea (DCMU) and methyl viologen (MV) in rice, a monocot, and cucumber, a dicot, leaves. four different methods (vacuum infiltration, floating, transpiration-aided incorporation through petiole and spraying) were compared, and $F_i$ and $F_v$/$F_m$ were chosen for the imaging of the DCMU- and MV-treated leaves, respectively. The effects of the chemicals in plants were generally heterogeneous over the whole leaf area. Moreover, the effectiveness of the treatment of a chemical in plant leaves was dependent on chemical species, plant species, concentration of the chemical, the treatment method, the duration of the treatment, the existence of light and detergent, etc. In conclusion, we suggest that to achieve the proposed effects of chemicals in plants for an actual experiment, these factors must be considered before the chemical treatment, and the best method for the treatment of the chemicals tested was floating and vacuum infiltration in the dicot and the monocot leaves, respectively, as drawn from Chl fluorescence imaging analysis.

• 한국약용작물학회지
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• 제10권3호
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• pp.181-184
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• 2002

고추냉이 품종의 생육 및 수량성을 검정하기 위하여 대왕(大王) 1호, 달마종, 도근재래(島根在來) 등 3품종을 공시하여 철원에서 물 재배한 결과 시험에 사용된 용수의 수질은 일본의 주산지인 정강(靜岡)와 비슷하였으며, 품종별로는 실생 번식용품종인 달마종은 지상부 및 근경의 관련 형질에서 변이폭이 적었으나 영양 번식용 품종인 도근재래(島根在來)는 변이폭이 컸다. 고추냉이의 부위별 건물율은 품종에 관계없이 근경>분지경>엽>엽병 순서이었고, 근경의 건물율과 allylisothiocyanate 함량은 비례하였다. 고추냉이의 수량과 근경의 신미 성분 함량과의 상관은 없었으며 품종별 allylisothiocyanate 함량은 달마종>도근재래(島根在來)>대왕(大王) 1호 순서이었다.

• 한국한의학연구원논문집
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• 제14권1호
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• pp.113-116
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• 2008

Petiole explant of Glehnia littoralis Fr. Schmidt was in vitro cultured MS plant medium(DUCHEFA co.) supplemented with various plant growth regulators and examined to find out their optimum combination and concentration for plantlet regeneration. We investigated optimal condition for efficient plant regeneration through adventitious shoot formation on MS plant medium with various kinds of plant growth regulators. Embryogenic calli and adventitious shoot formation were greatly influenced by plant growth regulators. Embryogenic calli induction showed a good response on MS medium supplemented with NAA and BA than others. Especially, combination of 1.0 mg/L NAA and 0.5 mg/L BA on MS medium led to the greatest frequency in adventitious shoot. The results suggest that plant regulator selection be important factor to achieve an efficient regeneration.

• Journal of Biosystems Engineering
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• 제43권1호
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• pp.30-36
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• 2018

Purpose: The objective of this study is to evaluate the effect of cultivation conditions on the growth and glucosinolate content of Chinese cabbage and kale. Methods: Chinese cabbage and kale were grown in three different cultivation conditions, including a plant factory, greenhouse, and open field. Samples were collected at two harvesting times (10 d and 20 d after transplanting the seedlings). Nine growth parameters (plant height, plant width, number of leaves, petiole diameter, SPAD readout, leaf length, leaf width, stem diameter, and plant weight) were measured immediately after harvesting, and the samples were freeze-dried and stored until the glucosinolate content was analyzed. Mean values of the growth parameters and glucosinolate contents were evaluated using Duncan's multiple range tests. Results: The results indicated that the plant parameters of the Chinese cabbage and kale were greater for plants grown in the plant factory and greenhouse. The plant height, width, and weight showed significant differences in the Duncan's multiple range tests at a 5% level. The plant factory also produced greater contents of most of the glucosinolates. Conclusions: Three different cultivation conditions significantly affected the growth and glucosinolate contents of Chinese cabbage and kale. Further study is necessary to investigate other functional components and different vegetable varieties.