1. Bonfils A.-C, Gleddie SC, Webb JA, Keller WA (1992) Somatic embryogenesis from cell suspension and protoplast cultures of Capsella bursa-pastoris (L.) Medic. In Vitro Cell Dev Biol 28P: 137–142
2. Coleman AW, Goff LJ (1985) Applications of fluorochromes to pollen biology. I. Mithramycin and 4’, 6-diamidino-2-phenylindole (DAPI) as vital stains and for quantitation of nuclear DNA. Stain Technol 60: 145–154
3. Douglas GC, Keller WA, Setterfield G (1981) Somatic hybridization between Nicotiana rustica and N. tabacum. I. Isolation and culture of protoplasts and regeneration of plants from cell cultures of wild-type and chlorophyll-deficient strains. Can J Bot 59: 208–219
4. Earle ED (1994) Analysis of somatic hybrids and cybrids obtained by fusion of Brassica rapa and B. oleracea. In: Bajaj YPS (ed) Biotechnology in agriculture and forestry, vol 27. Somatic hybridization in crop improvement I. Springer, Berlin Heidelberg New York, pp 305–319
5. Feeny P, Paauwe KL, Demong NJ (1970) Flea beetles and mustard oils: host plant specificity of Phyllotetra cruciferae and P. striolata adults (Coleoptera: Chrysomelidae). Ann Entomol Soc Am 63: 832–841