Abstract
Agrobacterium-mediated transformation protocol has been developed for Eleusine coracana (var. PR-202) by varying several factors which influence T-DNA delivery. Green nodular regenerative calli with meristematic nodules of seed origin were used as the target tissue for Agrobacteriumtumefaciens-mediated gene transfer. The highest frequency of transformation (44.4%) was observed when callus was infected, co-cultivated and incubated at 22°C. Incorporation of higher level of CuSO4 in the regeneration medium had significantly positive effect on the recovery of transformed plants. PCR analysis of T0 and T1 generation plants with nptII-specific primers revealed the amplification of nptII gene. Southern blot analysis of six regenerated plants confirmed selectable marker gene integration in three plants. This is a first report on Agrobacterium-mediated genetic transformation of finger millet and will pave the way for further studies in this and other millet crops.
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