Abstract
The electrophoretic properties of ribosomes and ribosomal proteins of coniferous seeds were determined on polyacrylamide gels. Dry seeds of jack pine ( Pinus banksiana Lamb.) contained 80S monoribosomes; polysomes were absent. After 48 hr of imbibition the seeds contained monoribosomes and polysomes. The MWs of the ribosomal proteins of the cytoplasm and chloroplasts were 10 to 82 × 10 3 and 9 to 65 × 10 3 respectively. Ribosormal proteins from Pinus, Abies, and Pseudotsuga were electrophoretically similar.
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