• 제목/요약/키워드: Plant Growth

검색결과 10,031건 처리시간 0.044초

식물 생산 시스템에서 수경재배한 Common Ice Plant의 재식밀도-생육-수확 도표 개발 (Development of a Planting Density-Growth-Harvest Chart for Common Ice Plant Hydroponically Grown in Closed-type Plant Production System)

  • 차미경;박경섭;조영열
    • 생물환경조절학회지
    • /
    • 제25권2호
    • /
    • pp.106-110
    • /
    • 2016
  • 식물의 생육과 생산성을 예측하는 것은 매우 중요한 일이다. 본 연구는 common ice plant (Mesembryanthemum crystallinum L.)의 작물생장률, 상대생장률, 지상부 생체중과 건물중, 수확시기, 상품률과 상품수량과 같은 생육과 수확 요인들을 쉽게 읽을 수 있는 재식밀도-생육-수확(PGH) 도표를 만들기 위함이다. 광도 $140{\mu}mol{\cdot}m^{-2}{\cdot}s^{-1}$과 일장 12시간 주기로, 3파장 형광등을 이용한 완전제어형 식물공장 시스템에서 박막수경 재배하였다. 4가지 재식밀도($15{\times}10cm$, $15{\times}15cm$, $15{\times}20cm$, and $15{\times}25cm$) 하에서 생육과 수량을 분석하였다. 재식밀도가 증가할수록 어느 한계까지는 식물체당 생체중과 건물중은 증가하는 경향이었으며, 단위면적당 생체중인 수량 또한 같은 경향을 보였다. 작물생장률, 상대생장률과 lost time은 2차 등식 형태를 보였으며, 지상부 생체중과 건물중은 직선적인 관계를 보였다. 이러한 등식을 이용하여 재식밀도-생육-수확(PGH) 도표를 만들었다. 예를 들면, $15{\times}20cm$ 재식밀도와 식물체당 생체 중 100g에서 수확할 경우, 재식주수, 작물생장률, 상대생장률, lost time, 식물체당 건물중, 수확시기와 수량은 각각 $33plants/m^2$, $20g{\cdot}m^{-2}{\cdot}d^{-1}$, $0.27g{\cdot}g^{-1}{\cdot}d^{-1}$, 22days, 2.5g/plant, 정식 후 26일과 $3.2kg{\cdot}m^{-2}$이었다. 이 도표를 가지고 적어도 2가지 요인 예를 들면, 재식밀도와 수확요인 중 하나만 알면, 작물생장률, 상대생장률, lost time과 같은 생육 요인과 지상부 생체중, 지상부 건물중, 수확시기와 수량과 같은 수확 요인들을 쉽게 구할 수 있다. 이러한 도표는 다양한 작물의 생육과 수량 요인을 예측할 수 있어 완전제어형 식물 생산 시스템 설계를 위해 유용한 도구가 될 것이다.

산꼬리풀의 효과적인 육묘를 위한 재배조건 최적화 (Optimization of Cultivation Conditions on Effective Seedlings of Veronica rotunda var. subintegra (Nakai) T.Yamaz.)

  • 이상인;연수호;조주성;정미진;이철희
    • 생물환경조절학회지
    • /
    • 제29권2호
    • /
    • pp.181-188
    • /
    • 2020
  • 본 연구는 국내 특산식물이며 관상소재로 개발이 가능한 산꼬리풀의 효과적인 육묘조건을 구명하기 위해 수행되었다. 육묘는 토양 종류와 비료 농도, 차광정도, 추비 농도, 종자의 광원 전처리 및 채종 시기별로 각 요인을 달리하여 수행하였다. 연구 결과, 산꼬리풀은 원예상토에서 생육이 우수하였으며, 혼용토에서는 비료 첨가 시 생육이 억제되었다. 차광은 55% 차광조건에서 무차광에 비해 전체적인 생육이 향상되었다. 고농도(1000mg·L-1)의 Hyponex는 육묘 시 생육을 촉진하였으며, 파종 전 종자에 대한 적색광 조사는 추후 초장과 생체중 향상에 효과적이었다. 채종 시기는 2018년도 종자가 2017년 종자보다 생육이 우수하였다.

Phytotoxic Effects of Xanthium occidentale Extracts and Residues on Seedling Growth of Several Plant Species

  • Chon Sang-Uk
    • Plant Resources
    • /
    • 제8권2호
    • /
    • pp.116-121
    • /
    • 2005
  • Compositae plants are known to contain biologically active substances that are allelopathic to agricultural crops as well as weed species. Aqueous or methanol extracts and plant residues from leaves of Xanthium occidentale were assayed against alfalfa (Medicago sativa) to determine its allelopathic effects, and the results showed that the extracts applied onto filter paper significantly inhibited seed germination as well as root growth of alfalfa. Aqueous leaf extracts of $40g\;L^{-1}$ were completely inhibitory on root growth of alfalfa, while root growths of barley (Hordeum vulgare L.) and soybean (Glycine max L.) were less sensitive. Leaf residue incorporation at $100g\;kg^{-1}$ into soil on seedling growth of barnyard grass (Echinochloa crus-galli Beauv. var. oryzicola Ohwi) inhibited both shoot and root fresh weights of barnyard grass by 94 and $96\%$, respectively. Methanol extracts from BuOn and EtOAc fractions of X. occidentale reduced alfalfa root growth more than did those from hexane and water fractions. The results based on bioassay of extracts and residues show that X. occidentale had potent an allelopathic activity against other plant species.

  • PDF

식물의 경계분포 이론과 백두산 삼림한계량의 파동성 (The Theory of Boundary Distribution of the Plant and Wave Character of the Timber Line on Mt. Paektu)

  • 장남기;심규철;이현욱;강경미;소금현
    • The Korean Journal of Ecology
    • /
    • 제21권5_2호
    • /
    • pp.491-499
    • /
    • 1998
  • An investigation was performed to establish the mathematical theories of a vibration for the plant growth and a wave distribution of a plant population on the boundary condition of a limiting factor in the environment. The mathematical theories of the plant growth vibration and wave distribution had been elucidated by the plant growth and the timber line on the middle slope of the west side of Mt. Paektu. The Betula ermaruii composes the timber line on about 2,060 m elevation of sea label, has a growth vibration on the ground surface and takes a wave distribution due to a boundary condition of alpine temperature gradient.

  • PDF

볏짚에서 추출한 짚초액의 식물성장에 대한 영향과 항균 효과 (Effect on Plant Growth and Antibiosis of Rice Straw Liquor Extracted from Rice Straw)

  • 강화영;김세훈;김영주;박상숙
    • 한국환경보건학회지
    • /
    • 제35권3호
    • /
    • pp.178-186
    • /
    • 2009
  • Rice straw liquid was prepared from rice straw using simple pyrolysis furnace, and its effects on plant growth and antibiosis were investigated. Effects of straw liquid on plant growth of Oryza sativa L., Glycine max Merr. and Lactuca sativa L. and antibiosis of bacteria and mold of rice straw liquid were studied. Th rice straw liquid showed good results on plant growth and multiplication. Rice straw liquid showed a little antibiosis on bacteria but non antibiosis on mold. Rice straw liquid had minimal inhibitory concentration of 2.5-5% for bacteria.

중금속이 애기장대의 생장과 종자발아에 미치는 영향 (Effects of Heavy Metals on Growth and Seed Germination of Arabidopsis thaliana)

  • 박영숙;박종범
    • 한국환경과학회지
    • /
    • 제11권4호
    • /
    • pp.319-325
    • /
    • 2002
  • This experiment was carried out to investigate the effects of heavy metals (copper, cadmium, lead and chrome) on the growth of plant and seed germination of Arabidopsis thaliana treated with various concentrations of heavy metals. Cadmium and chrome among the 4 heavy metals had no effect on the growth of stem even in the concentration fifty times higher than the official standard concentration of pollutant exhaust notified by the Ministry of Environment. The official standard concentration of cadmium, however, stimulated the growth of stem in general, increasing leaf size and surface area, although it had no effect on the length of stem. But the growth of stem was decreased about 18% in the official standard concentration of pollutant exhaust of lead and copper. There was no growth of root in the concentration of lead and copper ten times higher than the official standard concentration. Cadmium and chrome had no effect on the seed germination, but lead and copper decreased the rate of seed germination. Seeds were not germinated in the concentration of copper ten times higher than the official standard concentration and in the concentration of lead fifty times higher than the official standard concentration. From this research three peculiar results were obtained. Chrome in the soil did not have much effect on the plant growth and seed germination of Arabidopsis thaliana. Cadmium stimulated the stem growth in an optimum concentration. But lead and copper reduced the plant growth and seed germination even in a small concentration, especially copper had the worse effect.

USN 기술 기반의 비접촉 식물 생장 측정 시스템 구현 (Implementation of Non-contact Plant Growth Measurement System based on USN Technologies)

  • 석진원;유인태
    • 한국컴퓨터정보학회논문지
    • /
    • 제15권10호
    • /
    • pp.137-145
    • /
    • 2010
  • 본 논문은 USN(Ubiquitous Sensor Network) 기술 기반의 적외선 센서를 사용한 비접촉식 식물 생장 측정 시스템을 제안한다. 제안된 시스템은 식물 생장을 측정할 때 식물의 생장 피해를 줄이기 위하여 비접촉 센서를 사용하였다. 이 시스템은 직경, 단면적, 비대 형상과 같은 식물 생장 요소를 실시간 비접촉 방식으로 측정할 수 있다. 측정된 데이터는 센서 네트워크 기술을 사용하여 원격 서버까지 전송되고, 서버에서 저장 및 분석되며, 최종적으로 분석된 데이터는 사용자에게 제공될 수 있도록 구성하였다. 본 논문에서 제안된 식물 생장 측정시스템은 측정 방식과 장치에 비접촉 적외선 센서를 사용하여 설계 및 구현을 하였다. 그리고 시스템의 성능은 필드에서 측정 실험을 통하여 검증해 보았다.

Plant Growth Promotion in Soil by Some Inoculated Microorganisms

  • Jeon, Jong-Soo;Lee, Sang-Soo;Kim, Hyoun-Young;Ahn, Tae-Seok;Song, Hong-Gyu
    • Journal of Microbiology
    • /
    • 제41권4호
    • /
    • pp.271-276
    • /
    • 2003
  • The inoculation of some microorganisms into a microcosm containing soil from a barren lakeside area at Lake Paro in Kangwon-do enhanced plant growth significantly. The direct and viable counts of soil bacteria and soil microbial activities measured by electron transport system assay and fluorescein diacetate hydrolysis assay were higher in inoculated soil. The plant growth promoting effect of this inoculation may be caused by phytohormone production and the solubilization of insoluble phosphates by the inoculated bacteria. Three inoculated strains of Pseudomonas fluorescens produced several plant growth promoting phytohormones, including indole-3-acetic acid (auxin), which was confirmed by thin layer chromatography and GC/MS. P. fluorescens strain B16 and M45 produced 502.4 and 206.1 mg/l of soluble phosphate from Ca3(PO4)2 and hydroxyapatite, respectively. Bacillus megaterium showed similar solubilization rates of insoluble phosphates to those of Pseudomonas spp. We believe that this plant growth promoting capability may be used for the rapid revegetation of barren or disturbed land.