Abstract

Abstract Rice was the first major monocot crop species to be transformed and regenerated. Initially, rice transformation was limited to japonica cultivars. Subsequently, a number of indica and javanica cultivars have also been transformed and regenerated into fertile transgenic plants. Most transformation studies in rice have used direct DNA uptake into protoplasts, induced by polyethylene glycol treatment or electroporation. Recently, other transformation methods have been developed that are less genotype dependent, such as microprojectile bombardment of cell suspensions and immature embryos. This review summarizes progress in both protoplast-based and other transformation methods.

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