黑條萎縮病에 對한 벼 品種抵抗性에 關한 硏究

Studies on Varietal Resistance to Black- Streaked Dwarf Virus Disease of Rice Plants

The field experiment was carried out to study the varietal resistance and the inheritance of resistance to black-streaked dwarf virus(B.S.D.V.) disease using 414 rice varieties and three crosses of F₂ generation under the naturally severe outbreak condition of B.S.D.V. disease, the field masstesting method was established, and the difference of varietal resistance was recognized. According to the result of field test, japonica type varieties were susceptible, while indica type varieties were exhibited resistance or moderate resistance to the B.S.D.V. disease in general. It was assumed that the inheritance of resistance to B.S.D.Y. disease was governed by single dominant gene.