SOMATIC EMBRYOGENESIS ABILITY IN SELECT GEORGIA AND PEE DEE COTTON LINES

摘要

Fifteen Georgia and Pee Dee cotton germplasm lines along with Coker 312 (used as a positive control) were screened fortheir regenerability potential using nine embryo initiation/development media. In addition to Coker 312, somatic embryosand plants were obtained in PD 97019, PD 97021 and PD 98033 lines. Close to 95% of the Coker 312 seeds tested producedsomatic embryos. However, extensive seed to seed variation was found in the regenerable Pee Dee lines. Efforts are underway to evaluate the effects of the various media used and develop pure regenerable lines to improve the regeneration efficiencyof these newly found responsive Pee Dee genotypes.