@article{yung_wernsman_gooding_1991, title={CHARACTERIZATION OF POTATO VIRUS-Y RESISTANCE FROM GAMETOCLONAL VARIATION IN FLUE-CURED TOBACCO}, volume={81}, ISSN={["0031-949X"]}, DOI={10.1094/Phyto-81-887}, abstractNote={A previously identified gametoclonal tobacco variant, NC 602, exhibits resistance to certain potato virus Y (PVY) strains. NC 602 was subjected to a second cycle of anther culture and colchicine treatment. The resulting doubled haploid lines were evaluated for back mutation to susceptibility and any additional mutation that might provide resistance to tobacco etch virus (TEV). The PVY resistance was stable in anther culture, and although no TEV resistance was found, three lines were identified with delayed symptom onset (...)}, number={8}, journal={PHYTOPATHOLOGY}, author={YUNG, CH and WERNSMAN, EA and GOODING, GV}, year={1991}, month={Aug}, pages={887–891} }
 @article{yung_wernsman_1990, title={THE VALUE OF GAMETOCLONAL VARIATION IN BREEDING FOR QUANTITATIVE TRAITS IN FLUE-CURED TOBACCO (NICOTIANA-TABACUM-L)}, volume={80}, ISSN={["0040-5752"]}, DOI={10.1007/bf00210076}, number={3}, journal={THEORETICAL AND APPLIED GENETICS}, author={YUNG, CH and WERNSMAN, EA}, year={1990}, pages={381–384} }