Abstract
Abstract Total protein increases were observed in both Albizzia julibrissin epicotyl and hypocotyl tissues with advancing stage of cold hardiness, while no changes were detected in total nucleic acid quantities. Heavy ribosomal RNA decreased and soluble RNA increased, as percentages of total nucleic acid, during induction of cold hardiness in epicotyl tissues, but they remained unchanged in hypocotyl tissues. The data suggest either different mechanisms of control during induction of cold hardiness between epicotyl and hypocotyl tissues or a lack of relationship quantitatively between nucleic acid fractions and total protein concn or induction of cold hardiness in Albizzia julibrissin tissues.
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