Evaluation of a plant regeneration test of embryogenic cell suspension cultures of rice (Oryza sativa L. cv. Taipei 309)

In this paper we discuss the changes in the number of plants developed per embryogenic mass, the percentage of embryogenic masses, that developed plan ts, the percentage of plant regeneration, and the index of vigor of regener ated plants for embryogenic masses that were induced from daily samples of a cell suspension culture of rice (Oryza; sativa L. cv. Taipei 309). The re sults indicate that embryogenic masses that matured first and were induced from freshly subcultured cell suspension culture had the highest values for the four parameters. An index of vigor of the regenerated plants was defin ed.