Low temperature and Salt Tolerances of Native Zoysiagrass (Zoysia spp.) Collected in South Korea

국내 자생 한국잔디류의 내한성 및 내염성 조사

  • Choi, Joon-Soo (Department of Green Landscape Architecture Science, Dankook Univ.) ;
  • Yang, Geun-Mo (Department of Green Landscape Architecture Science, Dankook Univ.)
  • 최준수 (단국대학교 녹지조경학과) ;
  • 양근모 (단국대학교 녹지조경학과)
  • Received : 2011.11.02
  • Accepted : 2011.11.22
  • Published : 2011.12.31

Abstract

This study was carried out to select salt tolerant zoysiagrass breeding lines. Eighty two native zoysiagrasses collected from S. Korea were used in this study. Saline water were prepared by mixing sea water and tap water. ECw levels of saline water treated ranged from 2 to $3dS{\cdot}m^{-1}$. Zoysiagrass planted in pot by sprigging were soaked into the plastic box containing saline water. Winter injury was investigated under the pot condition. Most of Z. japonica types did not show winter injury. But Z. tenuifolia type, Z. matrella type, and Z. sinica type showed winter injury under the pot condition at Cheonan area. NaCl level in soil was increased from 0% to 0.51% by treatment of saline water. Soil ECe measurement showed upto $170dS{\cdot}m^{-1}$. Z. tenuifolia type (Z5034), Z. matrella type ('Konhee', Z4109, 'Semill'), Z. japonica type (Z1055, Z1040, Z1008, 'Zenith', 'Millock') and medium leaf type zoysiagrass (Z6096, Z6118, Z6021, Z6074) resulted in below 30% leaf firing under the saline condition. This approach might be useful for selecting salt tolerant breeding lines.

본 연구는 국내 자생 잔디 중 내염성 계통을 선발하고자 수행되었다. 공시재료는 국내에서 수집된 자생 한국잔디(Zoysia spp.)류 및 버뮤다그래스와 시쇼파스팔룸(seashore paspalum) 등 82 개체 였다. 염 처리는 바닷물과 수돗물을 혼합하여 전기전도도가 $2-3dS{\cdot}m^{-1}$ 수준이 되는 물에 시험포트를 침지처리 하는 방식으로 수행되었다. 조사는 염 처리 전 동해, 염 처리 후 염해, 그리고 염 처리 후 토양의 화학성을 조사하였다. 월동 후 피해조사에서는 대부분 Z. japonica 형이 피해 없이 천안지역에서 월동이 되었으며, 비단잔디, 금잔디, 갯잔디 등은 대부분 고사하였다. NaCl 농도 0.51% 수준에서 염해가 관찰 되었으며, 토양의 전기전도도(ECe)는 $170dS{\cdot}m^{-1}$ 수준까지 높게 나타났다. 82개 개체 중 30% 수준으로 염해를 낮게 받는 초종은 Z. tenuifolia 형인 Z5034, Z. matrella 형은 'Konhee', Z4109, 'Semill' 등, 그리고 Z. japonica 형은 Z1055, Z1040, Z1008, 'Zenith', 'Millock' 등으로 나타났으며, 중지류 중에서는 Z6096, Z6118, Z6021, Z6074 등으로 나타났다. 상기 방법은 앞으로 내염성 유전자원 평가를 위한 유용한 방법으로 활용될 것이다.

Keywords

Acknowledgement

Supported by : 국립산림과학원

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