@article{yan_2013,  title={Genetic purity testing of pumpkin hybrid seed by ultrathin-layer isoelectric focusing},  volume={13},  ISSN={1984-7033},  url={https://doi.org/10.1590/S1984-70332013000300008},  DOI={10.1590/S1984-70332013000300008},  number={3},  journal={Crop Breeding and Applied Biotechnology},  publisher={Crop Breeding and Applied Biotechnology},  author={Yan, Min},  year={2013},  month={Oct},  pages={200–202} }