Resistances in Rice to Tungro-Associated Viruses

摘要: Tungro is a composite disease associated with rice tungro bacilliform virus (RTBV) and spherical (RTSV). Over period of 23 yr, 40,000 germ plasm accessions were evaluated for resistance to by greenhouse mass inoculation using the vector green leafhopper (GLH), Nephotettix virescens. From those, 119 cultivars that showed low levels infection selected. Each seedling selected was exposed in test tube five GLH had fed on plants infected either both RTBV or RTSV alone. Inoculated seedlings indexed enzyme-linked immunosorbent assay (ELISA)