Albinism in Microspore Culture
Frequent formation of albino plants from in vitro cultured microspores is a particular problem for chromosome doubled haploid production in cereals and grasses. The phenomenon was first thought to be associated with maternal inheritance of plastids visualized by large deletions and rearrangements of plastid genomes in albino plants. Subsequently interests have changed to inactivation of plastid ribosomes, which has been shown to create albino phenotypes in vitro. A considerable knowledge on genetic regulation of the trait is used in this chapter to forward a hypothesis that the stressful in vitro conditions in these cultures make the plants fight their own plastids with antibiotic like compounds.
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