• Title/Summary/Keyword: Lycoris radiata

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Effects of Chemicals and Physical Treatment on the Split of Flower Stalk and the Vase Life of Lycoris squamigera and Lycoris radiata (화학약품 및 물리적 처리가 상사화와 석산의 화경갈라짐과 절화수명에 미치는 영향)

  • Lee Jong-Suk;Heo Buk-Gu;Lee Poong-Ok;Park Yun-Jum
    • Korean Journal of Plant Resources
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    • v.18 no.3
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    • pp.490-496
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    • 2005
  • This study was conducted to clarify the effects of chemicals and physical treatment on the split of flower stalk and the vase life of Lycoris squamigera and Lycoris radiata. There was no split of flower stalk for the Lycoris squamigera and the Lycoris radiata after the harvest of flowers and the immersion in 4 mM STA solution for 30 minutes. It was effective for the vase life of Lycoris squamigera that cut flower was pre-treated in 4 mM STS solution for 30 minutes and immersed in $5\~10\%$ sucrose + 150 ppm 8-HQS +4 ppm Rox preservative solution. The optimum periods of hot water treatments for the prevention of flower stalk split and the elongation of vase life for the cut flowers were 15 to 25 seconds for the Lycoris squamigera and 5 to 10 seconds for Lycoris radiata. Burning the cut parts of flower stalk for 10 to 30 seconds was effective for the prevention of flower stalk split and the elongation of vase life for the Lycoris squamigera, and 10 to 15 seconds for the Lycoris radiata. The vase lifes of Lycoris squamigera and Lycoris radiata were elongated when flower stalk was cut by an incline of 45 degrees compared with the horizontal cut. And Banding the flower stalks of cut flowers was effective for the prevention of flower stalk split and the elongation of vase life for the Lycoris squamigera and the Lycoris radiata.

The study on the culture of Lycoris radiata HERB in Medicinal Plant II. The Effect of Shade net on Growth and Bulb Yield (약용식물인 석산의 재배학적 연구 II. 광강도가 석산의 생육 및 인경수량에 미치는 영향)

  • 이종일
    • Korean Journal of Plant Resources
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    • v.4 no.1
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    • pp.23-27
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    • 1991
  • This experiment was conducted to establish shade-method suited to on tile artificial propagation of Lycoris radiata HERB. The ligilt intensity in the native habitatwas 30 kux in March and 3.2 Klux from June to sept. The average light intensityin tile open area was 137 Klux in June. The plant height and number of Ieaves wasgood at the 35% to 55% shadeing net. Bloonling time of Lycoris radiata HERB was inthe last of Sept. Yeild of bulb was increased in 35% to 55% of shadeing net.

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Ecological Characteristics of Lycoris radiata with Habitat Types

  • Lee, Jeom-Sook;Ihm, Byung-Sun;Kim, Ha-Song
    • The Korean Journal of Ecology
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    • v.26 no.5
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    • pp.247-250
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    • 2003
  • The investigation of ecological characteristics of Lycoris radiata was carried out in flooding (site I), half flooding (site II) and dry stands (site III). Seasonal change of air temperature showed similar patterns and that of light intensity showed quite difference among three L. radiata stands. Seasonal change of soil water content showed a great difference among three L. radiata stands. The study area was dominated by Pinus densiflora, P. thunbergii and L. radiata communities. The number of bulb in 1. radiata increased in September with bulb formation and decreased in January. Bulb weight in L. radiata was different from each site. The numbers of blossom were 23, 13 and 9, respectively in site I, II and III. The length of wreath were 17.0, 13.0 and 11.0cm, respectively, the length of stamen were 7.0, 6.4 and 6.5 cm, respectively and the length of stalk were 60.0, 45.0 and 42.0 cm, respectively in site I, II and III. The leaf of L. radiata developed rapidly in site I with sufficient water supply and lower light intensity, the number and the length of rootlets increased considerably in site III with insufficient water supply and higher light intensity, and the ecological characteristics in site II was intermediate between site I and site III. There was no great difference between the numbers of rootlets in site I and site II, which were due to sufficient water supply in two stands.

Investigation on Allelopathic potential of Korean Lycoris radiata (한국산 꽃무릇의 Allelopathy 효과 구명)

  • Park, Jae-Hyun;Lee, In-Jung;Shin, Dong-Hyun;Kim, Kil-Ung
    • Current Research on Agriculture and Life Sciences
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    • v.20
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    • pp.25-31
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    • 2002
  • This study was conducted to investigate allelopathic potential from Korean Lycoris radiata HERB. Two different solvents such as MeOH and water were used for extraction from Lycoris radiata HERB. Both extract showed inhibitory effect on the germination of barnyardgrass and lettuce seeds, indicating that this species contained the biologically active substances. The inhibitory substance extracted from bulbs of this species was identified by GC-MS as lycorenan, a kind of alkaloid.

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The native distribution and flowering Characterestics of Lycoris genus (Lycoris 속(屬)의 자생지(自生地) 분포(分布) 및 개화특성(開花特性))

  • PARK, N.B.
    • Journal of Practical Agriculture & Fisheries Research
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    • v.4 no.1
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    • pp.80-88
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    • 2002
  • This study was carried out to investigate the native distribution and flowering characteristics of Lycoris genus which is endemic species in Asia. This study was summarized as fellows: Native distribution of Lycoris genus was situated in latitude 37- 24 degrees with high humidity of coastline. Mininum temperature of native area was at -10℃ during winter season. The leaf of L. squamigera, L. koreana, L. sangunea, L. sprengeri, L. incanata and L. flavescens emergenced in spring. The leaf of L. radiata, L. rdiata var pumila, L. aurea, L. traubii, L. albiflora and L. houdyshelli emergenced in autum. Bulb of Lycoris genus show a sympodial branching system which is composed of 14-23 scales and 2.8-5.2 leaves per each bulb at flowering time. The flower shape of L. squamigera, L. Koreana, L, aurea, L. incanata, L. sprengeri, L. sanguinea and L. flavescens was trumpet. The flower of L. radiata. L. radiata var pumila, L. albiflora, L. houdchelli and L. traubii. was spider.

Genetic Relationship Among Lycoris Species Using RAPD Analysis, the Native Distribution and Flowering Characteristics (Lycoris 속의 RAPD 분석과 자생지 분포 및 개화특성에 따른 유연관계)

  • Cha, Jae-Young;Jung, Yen-Ok;Shin, Sang-Min;Kang, Yun-Kyung;Park, Jong-Kun;Park, Nou-Bog
    • Journal of Life Science
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    • v.16 no.7 s.80
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    • pp.1119-1122
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    • 2006
  • Ten species of Lycoris was selected for establishment of phylogenetic relationships using random amplified polymorphic DNA (RAPD) analysis, the native distribution and flowering characterestics. On the basis of the dendrogram constructed with the similarity coefficients, 10 Lycoris species were divided into two clusters. L. sprengeri and L. incannta were showed very high similarity in the RAPD analysis, same flowering time and flower color as pink. The leaf of L. squamigera. L. sanguinea, L. koreana, L. sprengeri and L. incanata emergenced in spring. The L. squamigera and L. sanguinea were showed high similarity in same cluster. Also L. koreana, L. sprengeri and L. incanata were showed high similarity in same cluster. The flower of L. radiata, L. radiata var pumila, L. albiflora and L. traubii was spider. These species was showed very low similarity in another Lycoris species.

Antibacterial Phytosterols and Alkaloids from Lycoris radiata

  • Lee, Dong Gu;Lee, Ah Young;Kim, Sun-Ju;Jung, Yong-Su;Lee, Dong-Hyouk;Cho, Eun Ju;Lee, Sanghyun
    • Natural Product Sciences
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    • v.20 no.2
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    • pp.107-112
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    • 2014
  • This research aimed to investigate the antibacterial activity of Lycoris radiata. The methanol extract and solvent fractions from L. radiata exhibited antibacterial activities against Escherichia coli, Staphylococcus aureus, and Helicobactor pylori. Open-column chromatography was used to isolate phytochemical constituents from L. radiata; spectroscopic analysis elucidated their structures as ${\beta}$-sitosterol (1), daucosterol (2), O-methyllycorenine (3), lycorenine (4), lycoricidinol (5), lycorine (6), and lycoricidine (7). Further testing of compounds 1 - 7 revealed antibacterial effects against E. coli, S. aureus, and H. pylori, which suggested the potential of these substances as antibacterial agents. We determined that compounds 1 and 2, isolated from the n-hexane fraction, were more effective against S. aureus and H. pylori. Compound 4, isolated from the methylene chloride fraction, exhibited noticeable antibacterial effects against E. coli. This study is the first report on the antibacterial activities of phytochemical constituents from L. radiata against E. coli, S. aureus, and H. pylori.

Relationship of Lycoris (Amaryllidaceae) Based on RAPD Markers (RAPD markers에 의한 상사화속 식물의 유연관계)

  • Tae, kyoung-Hwan;Kim, Yong Hyun;Shin, Young-Hwa;Kang, Shin-Ho;Kim, Joo-Hwan;Ko, Sung-Chul
    • Korean Journal of Plant Taxonomy
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    • v.38 no.1
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    • pp.17-29
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    • 2008
  • Phylogenetic relationships were examined for 17 taxa of Lycoris by RAPD analysis. The length of the amplified DNA fragments ranged from 300 bp to 1,700 bp. 57 scorable RAPD markers were observed from PCR reactions with five random oligoprimers. The analysis by UPGMA sepatated the examined taxa of Lycoris into were clusters. First group was comprised of ten taxa of L. chinensis var. sinuolata, L. sanguinea var. koreana, L. uydoensis, L. flavescens, L. radiata var. pumila, L. radiata, L. squamigera, L. chejuensis, L. aurea and L. guangxiensis, second group of L. haywardii, L. sprengeri, L. rosea, L. straminea and L. houdyshii, third group of outgroup of Narcissus tazetta var. chinensis and Crinum asiaticum var. japonicum. From the viewpoint of cytological characters such as polyploidy and karyotype, the RAPD analysis was very useful to show the relationship among the intraspecific taxa of Lycoris.

The Isolation of Acetylcholinesterase Inhibitory Constituents from Lycoris radiata using On-line HPLC-biochemical Detection System

  • Yang, Hee-Jung;Yoon, Kee-Dong;Chin, Young-Won;Kim, Young-Choong;Kim, Jin-Woong
    • Natural Product Sciences
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    • v.16 no.4
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    • pp.228-232
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    • 2010
  • Bioactivity-guided fractionation using on-line HPLC biochemical detection system on $CHCl_3$-soluble fraction of Lycoris radiata led to the isolation of deoxylycorenine (1), O-demethylhomolycorine (2), galanthamine (3), lycoramine (4), mixture of $6{\alpha}$-and $6{\beta}$-haemanthidine (5), and lycorine (6), identified by spectroscopic data and physicochemical property. Among the isolated compounds, 1, 3 and 6 showed acetylcholinesterase inhibitiory activities with $IC_{50}$ values of 18.0, 12.0 and $16.6\;{\mu}M$, respectively, in in vitro colorimetric microplate assay.