형질전환 연초의 복합바이러스 저항성

KF 116 was TMV resistant tobacco plant and KB 301 was PVY resistant plant transformed with TMV CP gene and PVY CP gene, respectively. These resistant plants were cross-fertilized and the 4 lines of the TMV-PVY resistant plants were selected from F1 hybrid plants. The rate of PVY-resistant plant in these hybrids was 100 percent and that of TMV-resistant plants including delay type was 90-98 percent at 4 weeks after virus inoculation. It was confirmed that the TMV and PVY CP genes were integrated into the genome of hybrid plants by genomic PCR, and Southern blot hybridization. The genome of F1 hybrid plants had one copy and 4 copies of PVY-CP gene and TMV-CP gene, respectively, and CaMV 35S promoters were not methylated, regardless of the difference symptom development to TMV.