• 제목/요약/키워드: total leaf number

검색결과 472건 처리시간 0.026초

중금속(카드늄, 납, 아연)처리에 따른 자생 비비추(Hosta longipes)의 형태적 반응 (Morphological Responses of Korean Native Plant Hosta longipes to Heavy Metals Cd, Pb, and Zn)

  • 강광철;주진희
    • 한국환경과학회지
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    • 제24권12호
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    • pp.1583-1590
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    • 2015
  • The aim of this study was to examine the morphological responses of Hosta longipes, an ornamental plants for heavy metal contaminated soils in urban landscaping, to heavy metals Cd, Pb, and Zn. Plants were grown in artificial soil amended with Cd, Pb, and Zn at concentation of 0, 100, 250, and 500 mg/kg. Plant height, leaf length, leaf width, total leaf number, deaf leaf number, new leaf number, chlorophyll contents, and ornamental value were monitored from May to August. At 4 months after planting, the survival and morphological responses of H. longipes grown in soil amended with Cd at concentrations ${\geq}100mg/kg$ were severely affected compared to those grown in the control soil. Relative leaf length rate and relative leaf width rate were significantly decreased when the concentration of Pb was increased. Total leaf number, chlorophyll contents, and ornamental value were the lowest value in plants grown in soil amended with Pb at level of 500 mg/kg. Relative leaf length rate and relative leaf width rate, total leaf number, dead leaf number, new leaf number, and ornamental values had a tendency of decrease when plants were grown in soils amended with Zn. However, no significant difference was found among treatments except for plants were grown in soils amended with 500 mg/kg Zn. Therefore, Hosta longipes might be useful for phytoremediation of Zn contaminated sites as herbaceous ornamental plants.

연초(Nicotiana tabacum L.)육종을 위한 제형질의 통계유전학적 연구 IV. 재배법 및 세대에 따른 유전적 Parameter의 변동 (Genetic Analysis on Some Quantitative Characters in Tobacco (Nicotiana tabacum L.) Breeding IV. Changes of Genetic Parameter according to different Cultivated Systems and Generations.)

  • 조명조;진정의
    • 한국연초학회지
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    • 제11권2호
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    • pp.181-195
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    • 1989
  • The study was conducted to obtain the genetic informations for some useful characters in tobacco breeding. The eight parents and a set of 28 crosses of F1's and F2's were used as materials, and planted on two different cultivated systems, i. e., oriental's and burley systems, during 1986-1988 at taegu Experiment Station, Korea Ginseng & Tobacco Research Institute. The observed characters were six agronomic characters which were plant height, number of leaves per plant, leaf length, leaf width, days to flowering, yield and five chemical components, nicotine, total nitrogen, protein nitrogen, total volatile base and pet, ether extract. The results obtaining are summarized as follows: 1. The higher heritabilities were found for days to flowering yield and nicotine in both generations, but values for number of leaves per plant, leaf length, total nitrogen and protein nitrogen were lower than other characters. 2. Genotypic correlation coefficients among all pairs of characters were slightly higher than the corresponding phenotypic correlations in F1's and F2's on two different cultivated systems. The relationship between leaf length and leaf width was the positive correlation, but that between number of leaves per plant and leaf width was negative. 3. From the genotypic correlations between yield and other characters, a conclusion that the yield was highly correlated with plant height, leaf length, leaf width and days to flowering was given. 4. Quality was positively correlated with number of leaves per plant and nicotine, but negatively with the other agronomic characters and chemical components.

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도시 내 중금속 오염지의 관상식물로서 자생 맥문동(Liriope platyphylla)의 적용성 평가 (Application of Liriope platyphylla, Ornamental Korean Native Plants, for Contaminated Soils in Urban Areas)

  • 주진희;윤용한
    • 한국조경학회지
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    • 제42권5호
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    • pp.81-87
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    • 2014
  • 본 연구는 토양 내 중금속(카드뮴, 납, 아연) 처리 농도에 따른 자생 맥문동의 외형적인 생장 변화를 살펴봄으로써, 도시 내 중금속 오염지의 관상효과 증진을 위한 수종탐색 자료로 활용하고자 수행하였다. 중금속은 카드뮴, 납, 아연등 3종류이고, 처리 농도는 Control, 100, 250, $500mg{\cdot}kg^{-1}$ 등 4가지로서, 총 12가지 처리구로 구성하였다. 2009년 3월에 각각의 실험구에 10개씩 3반복으로 각 처리구에 정식하여, 같은 해 9월까지 약 7개월간 온실에서 실험을 실시하였다. 생장이 가장 활발한 시기라 볼 수 있는 5월부터 8월까지 약 3개월 동안 엽장, 엽폭, 총엽수, 고사엽수, 신엽수, 엽록소함량, 관상가치 등을 중심으로 생장 변화를 모니터링하였다. 카드뮴(Cd) 처리구의 경우, 엽장과 엽폭의 상대생장률이 식재 후 4개월이 경과된 시점에서 급속히 감소하였다. 총엽수, 신엽수, 엽록소함량, 관상가치 등의 형태적 항목에서도 Control> $Cd_{100}$ > $Cd_{250}$ > $Cd_{500}$ 순으로 감소하는 경향을 보였다. 납(Pb) 처리구에서 엽장의 상대생장률은 $Pb_{250}$$Pb_{500}$ 처리구에서만 변화율이 감소한 반면, 엽폭은 납 처리 농도가 높을수록 성장률의 감소양상이 뚜렷하였다. 총엽수, 신엽수, 고사엽수등은 대조구와 $Pb_{100}$ 처리구에서 비교적 유사하였으나, 엽록소함량, 관상가치 등은 납 처리 농도가 증가할수록 감소양상이 매우 뚜렷했다. 아연(Zn) 처리구는 카드뮴와 납 처리구와는 달리 식재 후 4개월이 경과된 시점에서도 변화율의 차이가 있을 뿐, 엽장은 꾸준히 증가하는 경향을 보였다. 엽폭 상대성장율 또한 $Zn_{500}$ 처리구를 제외하고, 비교적 완만한 성장세를 보였다. 총엽수, 신엽수, 고사엽수, 관상가치는 $Zn_{500}$ 처리구에서 가장 낮은 값을 나타낸 반면, Control, $Zn_{100}$, $Zn_{250}$ 처리구간에 차이가 뚜렷하지 않았다. 본 연구를 통해, 맥문동의 관상가치적 관점에서 생장 변화를 파악함으로써 향후 현장적용의 기반 연구로서 큰 의미를 갖는다고 하겠다. 하지만, 중금속에 대한 식물의 내성은 중금속 자체의 특이성과 환경조건에 따라 변화할 수 있다는 개연성을 가지므로, 실내연구와 현장적용성 연구가 병행되어야 할 것이다.

인천 소래 간석지내 두개의 칠면초 ( Suadeda japonica ) 개체군간의 차이에 관하여 (Difference of Suaeda japonica Populations from two Different Habitats in Sorae, Incheon, Korea)

  • Lee, Kun-Seop;Oh, Kye-Chil
    • The Korean Journal of Ecology
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    • 제12권3호
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    • pp.133-144
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    • 1989
  • The morphology and flowering time of two Suaeda japonica populations from different habitats, the creek and the bank of the mudflat in Sorae, were surveyed. And standard transplantation and reciprocal transplantation were carried out to determine whether their characteristics were genetically fixed or not. Also soil sample of these habitats were analyzed. The amounts of loss on ignition, maximum field capacity, total nitrogen, exchangeable calcium and potassium, and soluble phosphorus were found to be significantly different between two habitats. Leaf thickness, leaf width, leaf length, stem height number of branches, and number of seeds were significantly different between plants of two populations. And flowering times of two populations did not overlap. According to the results of transplantation, leaf width, leaf thickness, and flowering times were the same as those at their original habitat. But the stem lenght, leaf lenght, number of branches and unmber of seeds were not. Therefore, the differences in the leaf length, leaf thickness, and flowering time seemed to bo genetically fixed. It were suggested that the creek bank populations of Suaeda japoinica were to be considered as different ecotypes.

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고려인삼과 미국삼의 형질특성 및 형질간 상관관계 (The Characteristics and Correlation Coefficients of Characters in Panax ginseng, Violet-stem Variant and Yellow. berry Variant, and Panax quinquefolium.)

  • 최광태;안상득;박규진;양덕조
    • Journal of Ginseng Research
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    • 제7권2호
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    • pp.133-147
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    • 1983
  • This study was carried out to obtain the basic information for the development of new ginseng varieties. The two variants (violet-stem variant and yellow-berry variant) of Korean ginseng (Panax ginseng C.A. Meyer) and American ginseng (Panax quinquefolium L.) of one to four-year were used for this study. All of the characteristics, such as leaf length, leaf width, petiol length, number of leaves per plant, number of leaflets per plants, stem diameter, stem length, number of stems per plant, root length, primary root length, root diameter, root weight were determined and correlations among them were estimated. The results obtained were summarized as follows. 1. Leaf length, petiol length, number of leaves per plant, and number of leaflets per plant of Panax ginseng, violet-stem variant and yellow-berry variant, were larger than those of Panax quinquefolium at all of the plant ages, while leaf width was wider in Panax quinquefolium. 2. The length of stem of Panax quinquefolium was shorter than that of Panax ginseng, and the frequency of multi-stem plants at 4-year-old ginseng was larger in violet-stem variant than in Panax quinquefolium and yellow-berry variant. 3. In the characteristics of ginseng root, the primary root length of Panax ginseng, violet-stem variant and yellow-berry variant, were less than that of Panax quinquefolium, while root weight, root diameter, and umber of secondary root related to yield were larger in Panax ginseng. 4. The root weight per plant related to the yield had positive and highly significant correlations with stem diameter, leaf length, leaf length, leaf width, number of compound leaves and leaflets in Panax ginseng and Panax quinguefolium. 5. The root weight related to the wield of ginseng had been influenced to stem diameter, leaf length, and leaf width directly, and number of compound leaves and leaflets indirectly. 6. The number, total area and activity of stomate per mm2 of Panax quinquefolium were more, larger and stronger than those of Panax ginseng.

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Optimized Conditions for Making Tea from Camellia(Camellia japonica) Leaf and Flower and Sensory Evaluation

  • Kim, Ju-Hee;Im, Wha-Chun;Park, Min-Hee-;Lee, Jun-Ho;Lee, Sook-Young
    • 한국자원식물학회:학술대회논문집
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    • 한국자원식물학회 2003년도 제10차 국제학술회의 및 추계정기 학술발표회
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    • pp.34-35
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    • 2003
  • Before making of tea, the number of leaf, plant height and node length in young shoot were 5.2, 14.9cm and 1,9cm respectively. These contents caused problems in leaf rolling and uniformity. No significant difference in quality and comoposition of roasted and steamed were observed, external shape and internal quality, however, were good from 1st to 3rd leaf. Chemical nutrition consists of leaf position, Total nitrogen content of terminal leaf was 4.88%, total free amino acid 21.12%, and caffein 3%. Vitamin C content was increased with increasing of leaf age. Making of roasted tea was required long time because camellia leaf was very hard and smoothly. Products had lower water color, perfume and taste. Internal quality of steamed tea was good in water color and taste. The contents of total nitrogen, total free amino acid, catechin, caffeine and vitamin C were 4.24%, 1.01, 17.7%, 2.6% and 75.7mg/ml.(중략)

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전처리 돌산갓 추출물의 첨가에 따른 김치의 보존효과 (The Preservative Effects of the Pretreated Leaf Mustard Dolsan(Brassica junces) Extract on Kimchi)

  • 박석규;서권일;이상원;강갑석;손미혜
    • 동아시아식생활학회지
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    • 제7권1호
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    • pp.65-70
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    • 1997
  • To investigate the food preservative effects of leaf mustard Dolsan(Brassica juncea), the pretreated extract of leaf mustard Dolsan were added to Kimchi and the results are as following. pH of Kimchi added leaf mustard Dolsan extracts were lower than that of control at initial stage, but after 6 days of fermentation, pH was higher in order of Kimchi added the pretreated extract of leaf mustard Dolsan (hydrolyzed at 3$0^{\circ}C$ for 24 hours, PEM), the unpretreated extract of leaf mustard Dolsan(UEM) and control. The total number of bacteria and lactic acid bacteria increased rapidly at the initial stage of fermentation and reached plateau at 2 days of fermentation. The number of bacteria and lactic acid bacteria of Kimchi added leaf mustard Dolsan extracts were lower than that of control ,a and antimicrobial activity of PEM in Kimchi was higher than that of UEM. After 2 days fermentation, sensery value of Kimchi added PEM was more excellent than that of control.

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두 외래종 민들레 번식 특성의 계절적 변이 (Seasonal Variation of Reproductive Characters in Two Introduced Species of Taraxacum)

  • 강혜순;최유미
    • The Korean Journal of Ecology
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    • 제21권5_1호
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    • pp.457.2-486
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    • 1998
  • Ecological success of introduced species is frequently attributed to the reproductive characters of those species. We examined the relationship between both flowering season and plant size and reproductive characters in two introduced species of Taraxacum, e.g., T. officinale and T.laevigatum. Seventy six plants of T. officinale and 23 plants of T. laevigatum were randomly tagged from a population at the sungshin Women's University in April of 1997. The size and number of vegetative characters such as rosette diameter, leaf number, and the largest leaf length and width were measured for each plant at the onset of flowering. The infructescence was collected continually from each plant before seed dispersal from April to August of 1997. The number of infructescence per plant, and seed number and total seed weight per infructescence were measured. Mean individual seed weight per infructescence was also obtained. T. officinale possessed larger sized, but smaller number of, leaves than T. laevigatum, thereby resulting in no significant difference in total leaf area. There was a trend that vegetatively larger plants in both of these species produced reproductive characters larger in size or greater in number, except for seed number and total seed weight per infructescence in T. laevigatum. All reproductive characters examined in T. officinale decreased toward the end of flowering season. In T. laevigatum, infructescence number per plant also declined during a flowering season: however, mean seed number per infructescence increaed toward the end of flowering season with no significant seasonal change in the total seed weight per infructescence. T. officinale produced on average about twice as many seeds per plant as T. laevigatum during a growing season. These two Taraxacum species produced quite small seeds in size compared to the endemic species, exhibiting a far better dispersal ability of introduced species. These data demonstrate that most reproductive characters decline in size and number in both species during a long flowering period, but the two species appear to employ different strategies to achieve reproductive success in disturbed habitats.

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녹차 추출물과 차잎 첨가에 따른 김치의 품질 특성 비교 (Comparison of Kimchi Quality Added Green Tea Extract and Green Tea Leaf)

  • 박금순;정의숙;박선희
    • 동아시아식생활학회지
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    • 제10권1호
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    • pp.62-70
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    • 2000
  • This study was conducted to investigated the kimchi quality of the addition of green tea extract and green tea leaf. Kimchi was examined for pH, titratable acidity, the changes in the number of microorganism, color,sensory evaluation . The pH and titratable acidity of kimchi at the addition of 5%, 1% of green tea extract and green tea leaf were higher and lower than those of control kimchi. the number of total microoranism at 21 days. were detected much more in the kimchi added green tea extract and green tea leaf than in control. The number of coliforms up to 7 days of fermentation were detected. And those at 14-21 days were not detected but those of 28 days were detected. The number of coliforms at 28 days were most lowest in the kimchi added green tea extract 3%. The number of lactic acid bacteria were detected more in the kimchi added green tea leaf. As a result of sensory evaluation during fermentation, the kimchi added green tea extract 5% was the highest score in carbonated taste. texture and overall quality. As the result of correlation between sensory characteristics and mechanical characteristics, it was found that sensory characteristics of sour taste is negatively related to the mechanical characteristics of L value, while it is positively related to the texture. The a values is negatively related to the sensory characteristics of overall quality. The b values is positively related to the sensory characteristics of sour taste.

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삼림토양의 미생물군집과 아밀라아제 활성에 관한 연구 (Studies on the Microbial Population and the Amylase Activity of the Forest Soil)

  • Lee, Hee-Sun;Shim, Jae-Kuk
    • The Korean Journal of Ecology
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    • 제17권2호
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    • pp.171-183
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    • 1994
  • Soil condition, total number of bacteria, soil amylase activity and microbial biomass $(CO_2-C)$ were measured at soil of different forest types. And the difference of the allelopathic effect was determined between fresh leaf extract of Quercus acutissima and Pinus rigida to the bacteria isolated from soil of different forest types. 1. Total number of bacteria in Carpinus laxiflora forest soil was 4~7 times larger than that in pinus desiflora forest soil. 2. Soil amylase activity was positively correlated with total number of soil bacteria and soil organic matter content. The amylase activity at F layer was 4~5 times larger than that at H layer, and that at H layer was 2~4 times larger than that at A layer. 3. Seasonal changes of microbial biomass showed a peak in summer, and vertical distribution of microbial biomass decreased with increasing soil depth. The microbial biomass in Pinus densiflora forest soil was larger than that in Quercus serrata forest soil. 4. Fresh leaf extract of Pinus rigida and Quercus acutissima showed an acceleration or inhibition effect on the growth of soil bacteria, and that of !. acutissima inhibited larger number of soil bacterial strains than that of P. rigida. 4.2% and 25% of soil bacterial strains isolated from soil of P. rigida and Q. acutissima forests were inhibited by fresh leaf extract of P. rigida and Q. acutissima, respectively.

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