• 제목/요약/키워드: Plant Resources

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Effect of Planting Date and Plant Density on Yield and Quality of Industrial Rapeseed in Spring Sowing

  • Kwon, Byung-Sun;Jung, Dong-Soo
    • Plant Resources
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    • 제8권2호
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    • pp.91-95
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    • 2005
  • In spring, to determine the optimal planting date and plant density of rapeseed in southern areas of Korea. $Taiwan^{\#1}$ variety for spring sowing, the highest yielding variety was grown under five different planting date and plant density. Yield components such as plant height, ear length, number of seedling stand per $m^2$, number of per ear and seed set percentage were highest at the plots with Mar. 5 of planting date and 50/20cm drilling of plant density. Yield of seed, oil, gas and 1,000 grains weight and erucic acid content were highest at the Mar. 5 of planting date and 50/20cm drilling of plant density. Judging from the results reported above, at optimum planting date and plant density of rapeseed seemed too be Mar. 5 of planting date and 50/20cm plant density in spring sowing.

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한반도 미기록 외래식물: 해란초아재비 (New Record for Alien Plant, Kickxia elatine (L.) Dumort. (Plantaginaceae) in Korea)

  • 김중현;남명자;임채은;김진석
    • 한국자원식물학회지
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    • 제34권1호
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    • pp.98-102
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    • 2021
  • 질경이과의 미기록속 Kickxia에 속하는 K. elatine (L.) Dumort.을 경기도 양주시와 경상북도 영천시에서 확인되었다. 근연속과 비교하여 뿌리를 내리지 않고 땅 위를 뻗는 줄기가 있고 잎은 극형 또는 화살촉 모양의 형태적인 특징으로 구분된다. 국명은 해란초아재비로 하였으며, 이들에 대한 기재, 사진, 도해도 및 검색표를 제시하였다.

Immune-Enhancing Effect of Hibiscus syriacus Leaves in RAW264.7 Cells and Cyclophosphamided-induced Immunosuppressed Mice

  • Seung Woo Im;Hyeok Jin Choi;Ju-Hyeong Yu;So Jeong Park;Jae Won Lee;Jin Boo Jeong
    • 한국자원식물학회:학술대회논문집
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    • 한국자원식물학회 2022년도 추계학술대회
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    • pp.92-92
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    • 2022
  • Under the COVID-19 pandemic, interest in immune enhancement is increasing. Although the immune-enhancing activity of plants of the genus Hibiscus has been reported, there is no study on the immune-enhancing activity of H. syriacus. Thus, in this study, we investigated the immune-enhancing activity of Hibiscus syriacus leaves (HSL) in mouse macrophages, RAW264.7 cells, and immunosuppressed mice. HSL increased the production of immunostimulatory factors such as nitric oxide (NO), inducible nitric oxide synthase (iNOS), interleukin-1β (IL-1β), and tumor necrosis factor-α (TNF-α) and activated the phagocytosis in RAW264.7 cells. The HSL-mediated production of immunostimulatory factors was dependent on toll-like receptor 4 (TLR4), p38, and c-Jun N-terminal kinase (JNK) in RAW264.7 cells. In the immunosuppressed mouse model, HSL increased the spleen index, the levels of the cytokines, and the numbers of lymphocytes, neutrophils, and monocytes. Taken together, HSL may be considered to have immune-enhancing activity and be expected to be used as a potential immune-enhancing agent.

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A new record of Scutellaria (Lamiaceae) in Korean flora: S. guilielmii A. Gray

  • KIM, Jung-Hyun;YANG, Young-Tae;LIM, Chae Eun;KIM, Jin-Seok
    • 식물분류학회지
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    • 제51권1호
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    • pp.103-108
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    • 2021
  • A new distribution of Scutellaria guilielmii A. Gray is discovered in Korea. This species was collected from seashores on Pyoseon-ri, Pyoseon-myeon, Seogwipo-si, Jeju-do. S. guilielmii is distinguished from other related Korean taxa of the genus by having broadly winged nutlets (fruits). Here, we provide a precise description, illustrations, key to the related taxa, and photographs of its habitat. The new Korean name is given as 'Nal-gae-gol-mu-kkot', considering the broadly winged nutlets (fruits). In addition, new habitats are likely to be discovered through plant biodiversity surveys of the southwestern coastal islands.