The rDNA-IGS of 11 Ustilaginoidea virens isolates from different geographical regions in China were amplified by PCR and sequenced. The results showed that the rDNA-IGS fragments consisted of one cen-tral variable reg...
In order to get a great quantity of spores of Botryosphaeria berengeriana f.sp.piricola,several methods to promote sporulation of the pathogen were compared.The results showed that the wounded young apple fruits withi...