Studies on Rice Varietal Resistance to Rice Stem Maggot, Chlorops oryzae Matsumura

벼줄기굴파리에 대한 수도(水稻)의 품종저항성(品種抵抗性)

  • LEE, Y.B. (Dept. Agrochemicals Development, Han-Nong Corporation) ;
  • HWANG, C.Y. (Dept. of Entomology, Agricultural Sciences Institute) ;
  • LEE, M.H. (Dept. of Entomology, Agricultural Sciences Institute) ;
  • Choi, K.M. (Dept. of Entomology, Agricultural Sciences Institute) ;
  • AHN, J.H. (College of Agriculture, Chungbuk National University)
  • 이영복 (주식회사 한농 기술부) ;
  • 황창연 (농업기술연구소 곤충과) ;
  • 이문홍 (농업기술연구소 곤충과) ;
  • 최궤문 (농업기술연구소 곤충과) ;
  • 안장헌 (충북대학교 농과대학)
  • Published : 1986.04.30

Abstract

To establish a method for measuring varietal resistance against rice stem maggot in field and pot, 20 varieties were used in $1981{\sim}1983$. The degree of injured stems by the 1st generation larvae was significantly correlated with that of injured panicles by the 2nd ($r=0.864^{**}$). There was no ovipositional preference in rice stem maggot. The larval mortality after artificial infestation varied widly from 5.6 to 100% in varieties and that of the resistant varieties was high after boring. There was a negative correlation between number of injured leaves and larval mortality after artificial infestation ($'81:r=-0.833^{**},\;'82:r=-0.918^{**}$). It is considered that larval mortality mainly caused by antibiosis and larval mortality 20 days after infestation on rice seedlings is ideal for evaluating the varietal resistance to rice stem maggot. Resistant varieties are Nagdongbyeo, Jinjubyeo and Chucheongbyeo susceptible varieties, Keumgangbyeo, Milyang 23, Baigyangbyeo and Milyang 30.

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