Korean Journal of Plant Tissue Culture (식물조직배양학회지)

The Korean Society of Plant Biotechnology (한국식물생명공학회)
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Varietal Difference of Survival Rate of Protoplast and Ion Content of Callus Treated with NaCl in Rice

NaCl처리에 대한 벼 원형질체 생존율과 캘러스내 양이온 함량의 품종간 차이

  • 이영만 (전남대학교 농과대학 응용식물학부) ;
  • 정창남 (전남대학교 농과대학 응용식물학부) ;
  • 장미순 (전남대학교 농과대학 응용식물학부) ;
  • 신서호 (전남대학교 농과대학 응용식물학부)
  • Published : 2001.01.01
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Abstract

Protoplast and callus of three rice varieties, CI5309 (salt-tolerant), Dongjinbyeo (moderately tolerant), Nakdongbyeo (salt-sensitive), were cultured on the MS medium containing 0, 0.3, 0.6, and 0.9% of NaCl. The survival rates of protoplasts were decreased according to the hours after NaCl treatment, and the survival rates of protoplast differed among three varieties at 9∼l2 hours after treatment. The contents of proline of CI5309 and Dongjinbyeo were almost the same at the different levels of NaCl, and that of Nakdongbyeo, however, was greatly decreased at the high concentration of NaCl. The contents of Ca, K and Mg were decreased according to the increasing of NaCl concentrations, but the contents of those did not differ among three varieties at the high concentration of NaCl. The contents of Na in each varieties were almost the same at the three levels of NaCl.

NaCl에 대한 내성이 다른 CI5309, 동진벼, 낙동벼의 원형질체와 캘러스에 NaCl 0, 0.3, 0.6, 0.9%를 처리하여 원형질체의 생존율과 캘러스의 proline 및 이온 함량을 조사하였다. 원형질체에 NaCl을 처리하였을 때 NaCl 농도가 증가함에 따라 품종간에 생존율의 차이가 컸다. 유묘검정에서 내성이 높은 CI5309와 동진벼는 차이가 거의 없으나 낙동벼는 이들보다 생존율이 현격하게 낮았으며 그 정도는 처리시간이 길어질수록 더 커졌다. 캘러스 내의 proline함량은 NaCl 농도 증가에 따라 내성인 CI5309와 동진벼는 변화가 거의 없었으나 감수성인 낙동벼는 현격하게 적었으며 0.9%의 높은 농도에서 CI5309, 동진벼, 낙동벼의 순으로 함량이 많았고 이 순서는 유묘의 내성정도와 일치하였다. NaCl 농도 증가에 따라 캘러스 내의 Ca는 세 품종 다 감소하나 그 정도는 크지 않았으며 K도 감소하나 0.9%에서 세 품종이 같았다. Mg도 농도증가에 따라 세 품종 모두 감소하였으나 동진벼가 가장 낮았고, Na는 무처리에 비하여 월등히 많았으나 세 품종 다 농도에 따른 차이는 거의 없었으며 그 양은 CI5309, 나동벼, 동진벼 순이었다.

Keywords

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