Abstract: The present application relates to the technical field of genetic breeding, and provides a method for identifying whether a diploid potato is self-compatible. The method relates to identifying whether a StSCI gene in the diploid potato is transcribed and expressed. Also disclosed is a method for identifying whether a StSCI gene is expressed by using molecular marker, and a method of screening for the molecular marker, which includes: obtaining the genome sequence information of parental materials, screening for difference sites of the parental materials, screening for the molecular marker, and identifying whether the screened molecular marker are usable. As for the identification of the self-compatibility of a diploid potato by using the screened molecular marker, the identification workload is small, a lot of time is saved, and the identification result is not affected by the environment, and it is accurate and reliable.

Abstract: The present disclosure provides a chitosan-Fe coating-based synbiotic microcapsule with gastric acid resistance and intestinal targeted release and a preparation method thereof. The preparation method includes the following steps: preparation of mixed probiotics, preparation of a chitosan-Fe coating, preparation of a microcapsule, and freeze-drying. In the present disclosure, live probiotics wrapped in the microcapsule can avoid a weak acid resistance and a poor long-term storage stability of the probiotics; chitosan-Fe added to a wall material can significantly improve an embedding rate of the microcapsule, and can also achieve targeted release of the probiotics in the intestinal tract.