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Maize lines differing in the frequency of reversion of the opaque2 (o2) mutable alleles controlled by the system of Bg-rbg transportable elements were studied. In the presence of the Bg regulatory element, these alleles can revert to normal. When reversion occurs prior to the first division of the primary endosperm nucleus, either phenotypically normal(More)
Reversions of the mutable allele o2-hfleading to formation of the phenotypically normal kernels or whole endosperm revertants (WER) are studied in the plant ontogeny. The pattern of WER kernel distribution on the ear maps and analysis of their progeny showed that the reversion of the mutable allele o2-hf occurs at the late premeiotic stages of the ear(More)
Maize lines differing in the frequency of reversion of the opaque2 (o2) mutable alleles controlled by the Bg-rbg system of transposable elements were studied. In the presence of the Bg regulatory element, these alleles can revert to normal. When reversion occurs prior to the first division of the primary endosperm nucleus, phenotypically normal kernels or(More)
A modifier of the Bg autonomous element of the Bg-rbg system of transposable elements has been found in the genotype of the inbred maize line 346. In the presence of this modifier (designated Mbg), the frequency of reversion of mutable allele o2-lf in combination with the Bg-lf element increases by 7–24 times. An increase in the Mbg dosage by three times(More)
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