• Title/Summary/Keyword: Abelia grandiflora

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Growing Characteristics of Shrub in the Planting Strip of Street, Busan City, Korea (부산시 가로녹지대 관목의 생육특성 및 뿌리발달 연구)

  • Hong, Suk-Hwan;Yang, Soon-Ja;Choi, Song-Hyun;Baek, Jae-Bong;Lee, Soo-Dong
    • Korean Journal of Environment and Ecology
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    • v.26 no.2
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    • pp.257-263
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    • 2012
  • Securing sufficient planting strip for street shrubs has a limitation. So many different shrubs which have been planted in the streets looks consider its visual aspect rather than growth characteristics. In this study, we compared with the growth condition of planted shrubs and construction condition of its planting strip. $Photinia$ $glabra$, $Euonymus$ $japonicus$, $Camelia$ $sasanqua$, $Nandina$ $domestica$, $Abelia$ $grandiflora$ were selected in the Busan City, Korea. The planting strips width were 0.5~0.9m which is not relatively different by each species. Species which have narrow growth character of root hair in the natural bed ($Nandina$ $domestica$, $Abelia$ $grandiflora$) have a good growth condition in the street planting strip, oppositely shrubs which have wide growth character of root hair ($Photinia$ $glabra$, $Euonymus$ $japonicus$, $Camelia$ $sasanqua$) have a relatively bad growth condition. Hereupon, there have a necessity which should be select the different shrub species for the planting strip of the street.

Occurrence of Powdery Mildew Caused by Erysiphe abeliicola on Glossy Abelia in Korea (Erysiphe abeliicola에 의한 꽃댕강나무 흰가루병 발생)

  • Cho, Sung-Eun;Park, Ji-Hyun;Lee, Seung-Kyu;Lee, Sang-Hyun;Shin, Hyeon-Dong
    • Research in Plant Disease
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    • v.18 no.2
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    • pp.133-138
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    • 2012
  • In November 2009, a powdery mildew on glossy abelia (Abelia ${\times}$ grandiflora) was found in Seogwipo, Jeju Island, Korea. Further survey in the southern part of Korea, e.g., Jeju, Busan, and Tongyeong confirmed occurrence of the disease. White colonies were present on leaves, young stems, and flowers, detracting from their beauty in landscape plantings. Severely infected lesions were discolored to red-purplish. Based on the morphological characteristics and analysis of rDNA, the fungus associated with the symptoms was identified as Erysiphe abeliicola U. Braun & S. Takam. This work provides the morphological feature of its anamorph for the first time, which is characterized by having multi-lobed hyphal appressoria and short foot-cells of conidiophores. Morphological characteristics of mature chasmothecia were consistent with the previous Japanese record of this species. The sequence of internal transcribed spacer region of ribosomal DNA obtained from a Korean sample showed that this species places in the section Microsphaera of the genus Erysiphe in phylogenetic position, corresponding with the classical taxonomy. This is the first report of E. abeliicola and its host plant in Korea. The host plant A. ${\times}$ grandiflora is newly listed in the host range of E. abeliicola.