Abstract
The genetic control of plant regeneration from callus culture was studied in tetraploid alfalfa (Medicago sativa L.). Seven cultivars (total 72 plants) were screened for regenerability. Ladak had the best regeneration response, in which 42% of the plants regenerated. Four regenerable plants and three nonregenerable plants were used to form 10F1 hybrids and three S1 populations. Segregation ratios in the populations suggested that regenerability of alfalfa via petiole culture was under the control of two complementary genes, Rn3 and Rn4. The presence of both dominant genes was necessary for a plant to regenerate in a two-step culture system. The data also indicated that gene dosage influenced regeneration efficiency. Significant reciprocal effects demonstrated that the interaction between callus induction medium and callus regenerability was affected by cytoplasmic factor(s).
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
