• Title/Summary/Keyword: sand culture

Search Result 164, Processing Time 0.031 seconds

Overview of Vietnamese traditional medicine

  • Trinh Hien Trung
    • Bulletin of Food Technology
    • /
    • v.18 no.3
    • /
    • pp.91-97
    • /
    • 2005
  • Nowaday, in Vietnam there are two types of medical services which have coexisted. These are Western medicine or Tay Y and Eastern medicine or Dong Y (this is also known as Oriental medicine). Dong Y is includes Chinese traditional medicine (TCM) or Thuoc Bac and Vietnamese traditional medicine (TVM) or Thuoc nam. In its’ history, Vietnam was dominated by feudal China in more than 1000 years, so that Vietnamese people was impacted much by Chinese thought, culture and medicine of course. Traditional Chinese and Traditional Vietnamese Medicine differ in practice, though they share the same theoretical foundation. Their relationship can be observed by the influence of TCM theories on the TVM which are Yin and Yang, Five Elements. In practice, TCM practitioners usually spend more time giving their patients a sort of theoretical explanation of what's going on, whereas TVM practitioners would use a more practical approach and concentrate less on theory. TVM was popular in common life of working people, generally using ingredients readily available nearby and involving a minimum of processing. Most knowledge was passed unselfconsciously from one generation to the next. It can be said that Vietnamese people are based on theories of TCM and available tropical plant sand animals native to Vietnam to built and develop TVM with it’s own character. The following are some plants are using in normal life of Vietnamese people as food or drink with well-being effect(1,2).

  • PDF

Agrobacterium tumefaciens Mediated Genetic Transformation of Pigeonpea [Cajanus cajan (L.) Millsp.]

  • Kumar, S.Manoj;Syamala, D.;Sharma, Kiran K.;Devi, Prathibha
    • Journal of Plant Biotechnology
    • /
    • v.6 no.2
    • /
    • pp.69-75
    • /
    • 2004
  • Optimal protocol for efficient genetic transformation has been defined to aid future strategies of genetic engineering in pigeon pea with agronomically important genes. Transgenic pigeonpea plants were successfully produced through Agrobacterium tumefaciens-mediated genetic transformation method using cotyledonary node explants by employing defined culture media. The explants were co-cultivated with A. tumefaciens strain C-58 harboring the binary plasmid, pCAMBIA-1301 [con-ferring $\beta$-glucuronidase(GUS) activity and resistance to hygromycin] and cultured on selection medium (regeneration medium supplemented with hygromycin) to select putatively transformed shoots. The shoots were then rooted on root induction medium and transferred to pots containing sand and soil mixture in the ratio of 1:1. About 22 putative TO transgenic plants have been produced. Stable expression and integration of the transgenes in the putative transgenics were confirmed by GUS assay, PCR and Southern blot hybridization with a transformation efficiency of over 45%. Stable integration and expression of the marker gene has been confirmed in the TO and T1 transgenics through PCR, and Southern hybridization.

Applications of Ground-Based Remote Sensing for Precision Agriculture

  • Hong Soon-Dal;Schepers James S.
    • Proceedings of the Korean Society of Crop Science Conference
    • /
    • 2005.08a
    • /
    • pp.100-113
    • /
    • 2005
  • Leaf color and plant vigor are key indicators of crop health. These visual plant attributes are frequently used by greenhouse managers, producers, and consultants to make water, nutrient, and disease management decisions. Remote sensing techniques can quickly quantify soil and plant attributes, but it requires humans to translate such data into meaningful information. Over time, scientists have used reflectance data from individual wavebands to develop a series of indices that attempt to quantify things like soil organic matter content, leaf chlorophyll concentration, leaf area index, vegetative cover, amount of living biomass, and grain yield. The recent introduction of active sensors that function independent of natural light has greatly expanded the capabilities of scientists and managers to obtain useful information. Characteristics and limitations of active sensors need to be understood to optimize their use for making improved management decisions. Pot experiments involving sand culture were conducted in 2003 and 2004 in a green house to evaluate corn and red pepper biomass. The rNDVI, gNDVI and aNDVI by ground-based remote sensors were used for evaluation of corn and red pepper biomass. The result obtained from the case study was shown that ground remote sensing as a non-destructive real-time assessment of plant nitrogen status was thought to be a useful tool for in season crop nitrogen management providing both spatial and temporal information.

  • PDF

S-Adenosyl-L-methionine (SAM) Production by Lactic Acid Bacteria Strains Isolated from Different Fermented Kimchi Products

  • Lee, Myung-Ki;Lee, Jong-Kyung;Son, Jeong-A;Kang, Mun-Hui;Koo, Kyung-Hyung;Suh, Joo-Won
    • Food Science and Biotechnology
    • /
    • v.17 no.4
    • /
    • pp.857-860
    • /
    • 2008
  • S-Adenosyl-L-methionine (SAM) is a bioactive material used in the treatment of depression, osteoarthritis, and liver disease. To obtain lactic acid bacteria (LAB) producing high concentrations of SAM, LAB were isolated from commercial kimchi and from prepared kimchi products that contained shrimp jeotgal (fermented salty seafood) or sand lance jeotgal or that were fermented at 5 or $10^{\circ}C$, respectively, when pH was 4.2 to 4.8 and titratable acidity 0.6 to 0.9. Among the 179 LAB strains isolated from the fermented kimchi products, the genus Leuconostoc produced the highest intracellular level of SAM (1.58 mM) and Lactobacillus produced the second highest level (up to 1.47 mM) in the strain culture. This is the first study to quantify SAM in LAB isolated from fermented kimchi prepared by a general kimchi recipe. Ultimately, the selected strains (Leuconostoc mesentroides subsp. mesenteroides/dextranicum KSK417, L. mesentroides subsp. mesenteroides/dextranicum KJM401, and Lactobacillus bifermentans QMW327) could be useful as starters to manufacture fermented foods containing high levels of SAM.

Effects of $NO_3^-$ Gradients on Nitrogen Fixation, Nitrate Reduction and Ureide Content of Soybean (대두의 공소개정, 공산환원 및 Ureide함량에 미치는$NO_3^-$의 영향)

  • 추연식
    • Journal of Plant Biology
    • /
    • v.30 no.3
    • /
    • pp.205-213
    • /
    • 1987
  • Soybean, inoculated with effective Rhizobium japonicum 110, were grown by sand culture with nutrient solution containing either of 0, 1, 3, 10 or 30mM NO3-/l, and analyzed growth characteristics, NR activity, N2-fixation activity, and changes of ureide contents during the growing period. The amount of nodule formation decreased abruptly by nitrate treatment, the maximum nodule dry weight was 1.59, 1.05, 0.78, 0.09 and 0.008 g plant-1, respectively for each treatment on the 98th day. Specfic activity of N2-fixation showed the maximum rates of 140, 101, 37, 5 and 2.2 nM dw.mg-1.hr-1, respectively for each treatment in the earlier growth period. The maximum acetylene reduction activity on the 98th day after sowing was 81.5, 35.3, 14.3, 0.1 and 0.0045 $\mu$M C2H4 plant-1.hr-1, respectively for 0, 1, 3, 10 and 30 mM of NO3- gradients. Nitrate reduction activity increased along with nitrate gradients, and decreased abruptly with age. Relative abundance of ureides in plant organs was high in reproductive growth, and showed the maximum value in fully symbiotic dependent plant. Relative abundance of ureides in stem is a useful indication for the evaluation of nitrogen fixation in nodules of symbiotic plant.

  • PDF

Narcissism and Idealization through the Analysis of Carrère's novel and Ozon's Film (나르시시즘과 이상화 - 카레르의 소설과 오종의 영화에 나타나는 주인공 사례분석을 통하여)

  • OH, Jungmin
    • Cross-Cultural Studies
    • /
    • v.19
    • /
    • pp.101-126
    • /
    • 2010
  • Narcissism is a pathological phenomenon and narcissistic subject always needs to put itself on the top and has interest in nothing but its own determination. The protagonist of Adversary by ?mmanuel Carr?re does pay careful attention to what others are thinking of him while he does not distinguish difference between object of love and himself. So he can be allegedly narcissistic subject. And it can be said that the behaviors of Mary in the movie Under the sand by Ozon are included in narcissism in that narcissistic subject has the characteristics that idealizes the object of libido. However, in this study, the heroine is examined based on such a point that the object of love and extreme idealization incline toward others. We call this case reverse-narcissism. In Part 2, it is investigated what relation narcissism as an unconscious psychological tool has with Oedipus complex, which plays an important role in forming human psyche. For instance, disappointment caused by prohibition at the oedipal stage is too severe, which creates superego and its idealization to protect in such a way that narcissistic regression can not be done. Cases of extremely big gap between ego and ideal type are perversion, impostor, mania, paranoia, etc, where narcissistic and oedipal elements are combined to affect.

Studies on the utilization of sandy barren lands and sandy farm lands of low productivity -1. Studies on growing rice-plant in sandy barren lands (식량증산을 위한 유휴사지(遊休砂地) 및 사질계(砂質系) 농지(農地) 활용(活用)에 관한 기초적(基礎的) 연구(硏究) -1. 수도(水稻)의 사지재배(砂地栽培)에 관한 연구(硏究))

  • Kim, Yong Chul;Choe, Gyu Ho
    • Korean Journal of Soil Science and Fertilizer
    • /
    • v.9 no.1
    • /
    • pp.33-38
    • /
    • 1976
  • As a basic studies for increasing food production utilizing sandy barren lands and sandy farmlands of low productivity which distributed widely in Korea, an experiment of growing rice-plant on sandy barren land was undertaken as follows. 1. Variety, IR-667 was adopted and the growing method was a nutrient-irrigation culture which aimed to minimize percolation loss in sand with an automatic contineous supplying nutrient solution for supplmenting the sand characteristics. 2. The growth type price-plant after heading was a typical higher yield plant, that is, numerous, small, narrow, and thickend leaves, straight attitute, dense fasciculated etc. though the rooting of plant after planting was delayed because of using paddy-field grown seedling. 3. The adaptability of rice-plants on sandy land seemed to be different by varieties and IR-667 was more adaptable than ordinary Japonica varieties. 4. Even at the period of heading and maturing, the root system of rice-plant grown on sand showed vigorous growth having more activated apical portions. while, even the lower leaves showed flourished state. 5. The suppling of calcium and magnecium in addition to nitrogen, phosphorus and potassium on sand made notable increase of stem number per plant, grain number per stem and yields.

  • PDF

Mass Production of Calla Lily(Zantedeschia spp. Southern Light) by the Immature Zygotic Embryo Culture (유색칼라(Zantedeschia spp. Southern Light) 미숙배 배양에 의한 다량증식)

  • 고정애;최소라;김현순
    • Korean Journal of Plant Resources
    • /
    • v.16 no.2
    • /
    • pp.160-167
    • /
    • 2003
  • In order to investigate the effects of developmental stage of embryos and plant growth regulators on mass production of Zantedeschia spp. Southern Light, immature zygotic embryos of Zantedeschia spp. Southern Light were cultured on Murashige and Skoog(1962) basal media or containing 2,4-D, NAA and BA. Globular embryos did not grow on any of the 2,4-D, NAA and BA combinations. The most suitable stage of immature zygotic embryo culture on the induction callus and multiple shoot was at early cotyledonary embryo stage, and at this stage of embryos were germinated up to 87.5%. The whitish watery callus and yellowish compact nodular callus produced on all 2,4-D, NAA and BA media. The best combination for inducing embryogenic callus was 0.5 mgL NAA and 1.0 mg/L BA. Whitish watery calli have been subcultured for more than 8 months and have retained their producing ability, Plant regeneration was only obtained by direct shoot development and yellowish compact nodular calli. Abundant plantlets were regenerated from cotyledonary stage of embryo culture on MS medium supplemented with 0.5 mg/L NAA and 1.0 mg/L BA. Supplementation of the media with 10% coconut water showed as the best concentration for plant differentiation from direct developed of shoots. The number of regenerated plants from one embryo could be seperated 25-35s plantlets. All yellowish compact callus-derived plantlets were transferred to pots containing a mixture of vermiculite, perlite and sand(1:1;1 v/v) and 100% of divided plantlets were phenotypically normal.

Effects of glutamine and AgNO3 on plant regeneration of Sedum sarmentosum (돌나물의 식물체 분화에 미치는 Glutamine과 AgNO3의 영향)

  • Ahn, Jeong-Ho;Kim, Hyun-Soon;Lee, Seung-Yeob
    • Journal of Plant Biotechnology
    • /
    • v.36 no.1
    • /
    • pp.18-22
    • /
    • 2009
  • This work was conducted to establish an efficient plant regeneration system for genetic transformation and the in vitro conservation of Sedum sarmentosum genetic resources. Effects of glutamine and $AgNO_3$ on plant regeneration between two genotypes were investigated using MS media supplemented with 0.2 mg/L NM and 3.0 mg/L BA. Calluses were formed on leaf explants placed on MS solid media supplemented with 3 mg/L 2,4-D and 1 mg/L BA. Calluses of Keumsan local strain produced shoots at a frequency of up to 100% after 50 days of culture on medium supplemented with glutamine. The highest number of shoots per callus was 17.6 at 350 mg/L glutamine. However, calluses of Wanju local strain gave rise to no shoots under the same culture conditions. Likewise, calluses of Keumsan local strain produced shoots at a frequency of up to 100% after 50 days of culture on medium supplemented with $AgNO_3$ whereas Wanju local strain sporadically produced shoots. The highest number of shoots per callus of Keumsan local stain was 16.1 at $15{\mu}M$ $AgNO_3$. Regenerated shoots were subcultured on hormone-free MS medium for rooting and shoot growth, and then 3-5 cm high plantlets were transplanted to the artificial soils comprising vermiculite and perlite, where they survived at a frequency of 88-100%. After being transplanted into upland soil:sand (1:1, v/v) in a greenhouse, regenerated plants showed a morphologically normal growth.

Characteristics of Continuous Culture and Soil Texture and their Effect on Growth and Yield of Platycodon grangiflorus (재배년수와 토성이 도라지 생육 및 수량에 미치는 영향)

  • Lee, Young-Han;Cho, Ju-Sik;Choi, Yong-Jo;Song, Geun-Woo;Kim, Min-Keun;Yun, Han-Dae
    • Korean Journal of Environmental Agriculture
    • /
    • v.19 no.1
    • /
    • pp.67-71
    • /
    • 2000
  • This study was conducted to determine the characteristics of continuous culture and soil texture and their effect on growth and yield of platycodon. The continuous cropping year was treated from 2-years old to 8-years old. The continuous cropping year was correlated with root weight $Y=17.246X+0.95(R^2=0.948^{{\ast}{\ast}{\ast}})$ and root disease incidence rate $Y=12.01X-5.74(R^2=0.946^{{\ast}{\ast}{\ast}})$. The T-N, $P_2O_5$ and MgO content of root were yearly decresed and those of injury roots were higher than those of normal roots. The 2-years old platycodon was treated different soil texture(Loamy sand, Sandy loam, Silt loam, Clay loam). The shoot weight 10.38g, root diameter 1.34cm, root height 16.8cm and root weight 5.46g at silt loam were higher than other soil texture.

  • PDF