摘要 : Plants of a diploid wild cotton species (G. klotzschianum A.) were efficiently regenerated from protoplasts isolated from immature somatic embryos and suspension cultures by studying various factors affecting regeneration. Purifie... 展开 Plants of a diploid wild cotton species (G. klotzschianum A.) were efficiently regenerated from protoplasts isolated from immature somatic embryos and suspension cultures by studying various factors affecting regeneration. Purified protoplasts were cultured with the density of 2-10x10(5) ml(-1), and the medium was k(3) inorganic salts with modified KM8P organic compositions, supplemented with several combinations of PGRs. Calluses were formed from protoplasts of suspension cultures and immature somatic embryos. The influences of carbon sources and GA(3) on callus differentiation and somatic embryo germination were analyzed. Somatic embryos germinated normally and formed regenerated plantlets. Regenerated plantlets were transferred to the soil and seeds were obtained. Random amplified polymorphic DNA (RAPD) analysis using 80 arbitrary oligonucleotide 10-mers showed 23 primers that gave 74 clear reproducible bands, with amplification products being monomorphic for 14 tested plantlets. A total of 1036 bands obtained exhibited no aberration in RAPD banding patterns in the 14 plants. Plants regenerated via somatic embryogenesis from the diploid cotton protoplasts have genetic homogeneity. 收起