Plant regeneration, developmental pattern and genetic fidelity of somatic embryogenesis derived Musa spp.

Publication date: December 2018Source: Journal of Genetic Engineering and Biotechnology, Volume 16, Issue 2Author(s): Natarajan Nandhakumar, Krish Kumar, Duraialagaraja Sudhakar, K. SoorianathasundaramAbstractMultiplication of banana cvs. Grand Naine (Musa AAA, Cavendish-sub group) and Rasthali (Musa AAB, Silk-sub group) were attempted through somatic embryogenesis. The influence of position of male flower buds, amino acid supplements in the induction of somatic embryogenesis and field performance of embryogenic cell suspension (ECS) derived banana plants were studied. Differentiated immature male flower buds positioned at 6–8 th bract whorl as explants showed better callus induction and somatic embryogenesis. Supplementation with glutamine at 400 mg L−1 along with 20:20 g L−1sucrose: maltose in maturation media induced a 10-fold increase in somatic embryo formation compared to control. Cotyledonary stage somatic embryos desiccated for 2 h showed higher germination compared to non-desiccated embryos. The plantlets generated were hardened, and the genetic fidelity of the plantlets was confirmed using ISSR marker. To check the field performance of ECS derived plants, plantlets were hardened and planted in the field along with meristem and sucker. During the field growth, these ECS derived plants were morphologically similar to those of control plants. In this experiment, it was observed that ECS derived banana plants displayed normal phenotype as that of plant...
Source: Journal of Genetic Engineering and Biotechnology - Category: Biotechnology Source Type: research