Abstract
In binucleate pollen tubes the vegetative and generative cell nuclei are known to synthesize RNA. Nothing is known about RNA synthesis in trinucleate pollens. To determine whether RNA synthesis occurs in trinucleate pollen, Secale cereale pollen was studied. The vegetative and sperm cell nuclei of the in vitro grown pollen tubes were shown by autoradiography to incorporate [5-3H] uridine. This incorporation was interpreted as indicating the synthesis of RNA.
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