Using victor boll inoculation method, cotton bolls of different ages were tested for resistance to \%Phytophthora boehmeriae, Diplodia gossypina\%and \%Colleto-trichum gossypii\%.

• 在室内离体条件下，对不同日龄的棉铃用孢子液浸铃法接种铃疫病菌、黑果病菌和炭疽病菌。