F_1 hybrids of all the three combinations showed high resistance to pink bollworm ( Pectinophora gossypiella ) . F_1 hybrids of GA5 × R27 and GA18 × HB were highly resistant to bollworm ( Helicoverpa armigera ), and GA × HB had middle resistance .
结果表明：3个杂交组合均高抗棉红铃虫，GA5×R27和GA18×HB以及GA×HB分别抗、中抗棉铃虫；
r27