Abstract:To screen out molecular markers suitable for identification of Phytophthora capsici resistant pepper in Chongqing, the screening efficiency of 12 molecular makers for Phytophthora blight resistance was studied in 63 processed pepper (Capsicum annuum) germplasms in Chongqing. The results showed that there were no different amplification bands of 7 markers among the pepper germplasms, and the amplification results of 2 markers were unstable. Only 3 markers, such as ZL6203, ZL6726 and E73, could amplify different bands among pepper germplasms. For ZL6203, the efficiency of screening high resistant, resistant and medium resistant materials was 87.50%, 77.78% and 63.64%, respectively. For ZL6726, the efficiency of screening resistant and susceptible materials was 100.00% and 66.67%, respectively, and for E73, the efficiency of screening resistant and high resistant materials was 77.78% and 62.50%, respectively. Therefore, the screening efficiency of the same molecular marker for different resistance materials was quite different. ZL6203, ZL6726 and E73 markers were suitable for identification of Phytophthora blight resistant of processed pepper in Chongqing.
