METHOD FOR BREEDING SELF-COMPATIBLE POTATOES

Disclosed is a method for breeding self-compatible potatoes， including the following steps: (1) selecting a self-compatible potato variety material and referring to it as PG6359， and cloning the S-RNase gene of PG6359 through the transcriptome sequencing method; and (2) obtaining two full-length sequences of the S-RNase gene from the cloned S-RNase gene in step (1) and referring to them as S s11 and Ss12 respectively， and after carrying out an artificial self-pollination for the variety material PG6359， selecting the variety material having the genotype of Ss11Ss11 from the offspring as the female parent， and selecting a self-incompatible material as the male parent， and then obtaining a self-compatible F1 generation by hybridization. The invention overcomes the self-incompatibility of diploid potatoes， and does not require the introduction of any wild potato gene fragments， thereby avoiding linkage drag， and providing a basis for the rapid creation of a diploid potato inbred line.