• 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.

• 한국자원식물학회지
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• 제11권3호
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• pp.345-352
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• 1998

A Korean endemic and evergreen small tree ' Dendropanax morbifera $L_{EV}$.(Araliaceae)' is a component of evergreen forest and mainly idstributein sourthern region and islands in Korea. A local population of D. morbifera which is located between evergreen and deciduous forest within 50m x 50m quadrate was investigated to ascertain the change of population structure, emergence and growth dynamics of seedlings and saplings, and pattern of spatial distribution by the temproal and spatial expansion of population . The result of analysis of population structure by Importnace Value(IV), evergreen forest showed a high species diversity of evergreen tree species such as Cinnamomum japonicum, Machilus japonica, Neolitsea serica, Daphniphyllum macropodum, Ligustrum japonicum, and etc, in middle and under story than in upper story where Camelia japonica and Quercus acuta were dominant. And in conterminous deciduous fores, the major component of evergreen forest in this region, Camellia japonica, Quercus acuta, evergreen tree of Lauraceae and etc. were abundant in only under story. IV of D. morbifera differed from among three story. In comparative analysis of emergence and growth dynamics of D. morbifera seedlings and saplings between evergreen and deciduous forest, emergece and density of seedlings were significantly greater in evergreen than in deciduous forest, and growth of height and basal diameter of seedlings and saplings were slightly larger in evergreen than in deciduous forest. The spatial distribution patterns by Moristia's index mapping of indivuduals using a lattice method of XY axis within this population showed that seedlings(age up to 2 years) and saplings (age>2 years and height<1m) both evergreen and deciduous forest were more or less aggregated apart from mature trees, and thougth intermediate trees(height>1m and dbh<10cm) had a aggregated distribution pattern, mature trees(dbh>10cm were uniform. In conclusion , the expansion of D. morbfera population from evergreen to deciduous forest accompanied with a mumber of evergreen woody species, and also, emergence and recruitment, and growth of seedlings were greatly influenced moisture and canopy by around community structure.

• 한국육종학회지
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• 제43권4호
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• pp.330-336
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• 2011

신속하게 생장하는 소나무의 조기 선발인자를 구명하고자 32년생 소나무의 풍매차대 검정결과로 얻어진 재적지수를 기준으로 상, 중, 하로 구분하여 선발된 12가계의 생장특성과 동일한 가계의 유묘 생장특성과의 상관관계를 분석하였다. 선발된 12가계의 종자 특성과 동일 가계의 성목 생장특성과는 상관관계가 없었으며 다만 소나무 유묘의 초기 생장과는 관련이 있는 것으로 나타났다. 가계별 1년생의 유묘 건물중과 성목의 재적지수(32년생)와는 1%의 유의적 정의 상관 관계가 있는 것으로 나타났다. 특히 재적지수가 높았던 상위 그룹의 유묘 가계의 건물중에 따른 서열은 모두 상위에 있어 중, 하위 그룹과 구분이 되었다. 또한 가계별 묘고의 평균 생장속도는 상, 중, 하위그룹이 각 4.568, 3.773, 3.535로 나타나 상위 그룹이 중, 하위 그룹보다 매우 빠른 것으로 나타났다. 이러한 결과로 유묘의 건물중 및 묘고 생장속도는 신속 생장하는 소나무 가계의 조기선발을 위한 주요 인자로 추정되었다.

• Journal of Forest and Environmental Science
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• 제36권4호
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• pp.281-289
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• 2020

The study was conducted to observe the effects of compost of faecal sludge (FSC) and food waste (FWC) on seed germination and initial growth performance of Acacia auriculiformis and Swietenia mahagoni seedlings at the nursery of Chittagong University, Bangladesh. Before sowing the seeds, different combinations of FSC and FWC were incorporated with nutrient-deficient natural forest soils. Seed germination and growth parameters of seedlings were recorded after two, three and four month of seed sowing. We observed that seed germination (%) and seedlings growth parameters varied significantly (p<0.05) in the soil added with FSC and FWC in comparison to control. The highest germination was observed 88.89% for A. auriculiformis in combination of soil and FSC at 3:1 and 92.59% for S. mahagoni where soil combined with FWC at 4:1. The seedling biomass and other growth parameters of A. auriculiformis and S. mahagoni was also observed with combinations of soil with FSC 3:1 and soil with FWC 4:1. Therefore, the study revealed that the compost of both FS and FW can be a good soil conditioner for the initial growth of forest seedlings and the proven combinations can help to grow quality seedlings in the nursery.

• 한국환경과학회지
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• 제25권8호
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• pp.1051-1056
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• 2016

The growth characteristics of Paeonia ostii 'Fengdan' seedlings roots in response to trichokonins-spray treatment were investigated in this study. One-year-old seedlings of P. ostii 'Fengdan' were potted in plastic cups containing garden mold and grown under field conditions. The results showed that application of trichokonins significantly promoted root growth in P. ostii 'Fengdan' seedlings. The total root projection area, total root surface area, total root volume, total root length, root number and root diameter of seedlings treated with 0.25 mg/L trichokonins were higher by 141.70, 116.59, 119.44, 55.97, 348.88 and 127.78%, respectively, than that of the control. Thus, the results supported the hypothesis that good growth condition for roots could directly improve their nutrient absorption and utilization efficiency, promoting plant growth and development.

• 한국환경과학회지
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• 제11권11호
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• pp.1165-1172
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• 2002

The effects of salicylic acid(SA) and water deficit on growth and proline accumulation were investigated in cucumber(Cucurmis sativus L.) seedlings. Exogenous application of SA(100 $\mu$M-1 mM) led to a noticeable decrease in root and shoot growth, and dry weight of seedlings. Anatomical observation on leaf of cucumber revealed that the thickness of all leaf tissue components decreased in SA-treated plants. The effect was most pronounced on the width of the adaxial epidermis. In the separate effects of SA(0, 100, 500 and 1000 $\mu$M) and water deficit induced by PEG(0, 4.4, 7.0 and 9.6 %) on growth, the water deficit treatments had greater effects on growth traits than SA. Combinations of SA and PEG(SA+PEG) decreased shoot and root dry matter, and root length. Proline increased slightly in SA-treated seedlings, but exhibited a marked increase in water deficit application. Combinations of SA+PEG induced higher proline in both shoots and roots than SA stress alone. Shoots had higher proline than roots. Our data support a role of SA potentiating the osmotic stress response of germinating cucumber seedling.

• 한국환경과학회:학술대회논문집
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• 한국환경과학회 2002년도 봄 학술발표대회 발표논문집
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• pp.465-467
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• 2002

The effects of salicylic acid (SA) on growth and proline were investigated in cucumber seedlings. Exogenous application of SA(100 uM - 1mM) led to a noticeable decrease in root and shoot growth, and dry weights of seedlings. Anatomical observation on leaf anatomy of cucumber revealed that the thickness of all leaf tissue components decreased in SA-treated plants. The effect was most promounced on the width of the adaxial epidermis. In the separate and simultaneous effects of SA and water deficit induced by PEG on growth and proline accumulation, the water deficit treatments had greater effects on growth traits and proline content than SA. Combinations of SA and PEG decreased dry matter and root length, and resulted in higher proline in both shoots and roots than SA stress alone. Shoots had higher proline than roots.

• Journal of Plant Biology
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• 제27권4호
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• pp.241-251
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• 1984

The present study investigated the effects of triacontanol (TRIA) on plant growth and peroxisomal enzyme activities in radish seedlings. The optimum concentration of TRIA with respect to radish seedling bioassay was decided to 1.0mg $1^{-1}$. In comparison to untreated controls (including Tween 20 treatment), 1.0mg $1^{-1}$ TRIA treatment caused an increase in seed germination rate and root growth, but no stimulation in hypocotyl growth. Chlorophyll accumulation in cotyledon during carly development stage increased rapidly, and degradation of chlorophyll in later stage due to the cotyledon senesence was noticeably retarded. Increase of soluble protein content in cotyledon at early period of development was observed. Isocitrate lyase and catalase activity was not significantly different in both the treated and the untreated plants. But, glycolate oxidase activity was inhibited by TRIA down to 20% against controls. Also, the increase of the activity of peroxidase, a leaf-senescence marker enzyme, was continuously retarded over control for 8 days of development. Based on above results, TRIA was found to be active in both the growth and the peroxisomal enzyme activities of radish seedlings.

• 한국환경생태학회지
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• 제21권6호
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• pp.544-553
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• 2007

본 연구는 우리나라에 자생하는 순비기나무의 실생묘와 삽목묘를 이용하여 토양의 종류와 시비방법에 따른 재배방법을 구명하고자 한 것으로서, 그 결과를 요약하면 다음과 같다. 순비기나무의 1년생 실생묘와 삽목묘를 모래, 마사토, 황토 등 3종류의 토양에 시비하지 않고 재배한 결과, 실생묘는 모래와 마사토에서 70% 그리고 황토에서 35%의 생존율을 나타내었고, 삽목묘는 마사토에서 90% 그리고 모래와 황토에서 80%의 생존율을 나타내었다. 실생묘와 삽목묘 모두 전반적인 생장은 마사토와 모래에서 양호하였고, 황토에서 비교적 불량하였다. 실생묘의 경우는 줄기생장이 양호하였고, 삽목묘의 경우는 뿌리생장이 양호하였다. 마사토를 기본토양으로 하고 비료의 종류와 시비량을 조절하여 재배하였을 경우에 유기질 비료만을 기비로 시비한 시험구에서만 묘목이 생존하였고, 무기질비료와 액비를 시비한 시험구에서는 식재한 묘목이 모두 고사하였다. 시비구에서 삽목묘는 실생묘에 비해 월등히 높은 생존율을 나타내었고, 특히 소량 시비구에서는 실생묘에 비해 2배 이상 높은 생존율을 나타내었다. 이상의 결과를 요약하면, 순비기나무 묘목을 재배할 때에 삽목묘가 실생묘보다 전체적인 활착과 생장이 양호하며, 토양에 대한 적응성도 높고, 토양비옥도에 대한 요구도가 적은 것을 알 수 있었다.

• 한국융합학회논문지
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• 제8권8호
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• pp.191-196
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• 2017

본 연구는 파인 버블수 처리시 인삼 종묘삼 생장에 미치는 영향 대해서 조사하는 융합연구로써 고년 근 인삼 재배 시 적용 가능성을 높이기 위한 기초자료를 제공하고자 실시하였다. 연구결과 일반수와 파인버블수를 각각 처리한 종묘삼이 성장함에 따라 지상부와 지하부의 부위별 차이점이 나타났다. 지상부에서는 파인버블수를 처리한 종묘삼이 일반수를 처리한 종묘삼보다 잎의 성장이 약 10%증가 하였고 줄기는 약 6% 성장이 일어났다. 지하부에서는 뿌리길이는 약 5% 증가하고 주근 폭이 약 8% 증가되었고 뿌리 무게는 생중량이 약 9%, 건중량은 약 7%의 무게 증가가 일어났다. 이것은 뿌리전체만 성장한 것이 아니라 주근의 생성이 빨리 되면서 전체적으로 뿌리성장이 약 7% 증가하였다고 판단된다. 이와 같은 결과는 종묘삼의 생육증가가 파인버블수의 특이한 물질적 성질이 종묘삼의 성장에 자극 주었다고 볼 수 있다. 따라서 본 연구의 결과는 종묘삼을 이용한 초기 연구로써 향후 고년 근 인삼재배에 적용 가능성이 높다고 판단되며 이후 2년 근 인삼재배에서 적용한 연구와 토양조건에 따른 용존 산소량을 조절함으로써 최적 재배조건을 찾아가는 추가 연구가 필요할 것으로 생각된다.