옥수수 萎縮바이러스病 抵抗性의 遺傳

Inheritance of resistance to maize dwarf mosaic virus in corn(zea nays L.)

Eight corn inbreds and their 28 F₁’S were used to study the inheritance of resistance to maize dwarf mosaic virus (MDMV) in Korea. Corn plants were inoculated with MDMV strain B at 4 leaf stage (23 days after emergence) and two MDMV ratings were made at 29 days and 58 days (15 days after silking) after inoculation, respectively. No differences were observed between the two rating times in the resistance for both inbreds and hybrids, the effects of combining ability, the effects of dominance and the dominance order of inbreds in Vr, Wr graphs for MDMV. Inheritance of resistance to MDMV appeared to be influnced by both additive and dominant gene effects, but additive effect was more important. Partial dominance without interactions among non-allelic genes was also recognized. Inbred B 68 showed the greatest general combining ability effect for MDMV resistance and Ga 209 and H 92 were followed in that order. B 68 was appeared as the most promising gene source for MDMV resistance.