Relationship of Nuclear Magnetic Resonance Relaxation Time to Water Content and Cold Hardiness in Flower Buds of Evergreen Azalea

概要

論文の詳細を見る
The longitudinal relaxation time (T_1) of water protons in florets of R. × akebono flower buds was measured with a pulse NMR spectrometer to determine the relationship of T_1 to water content and cold hardiness (supercooling ability). Seasonal changes of T_1 in florets were closely correlated with water content and supercooling ability of florets. T_1 of florets was short for acclimated buds having a low water content and long for non-acclimated buds having a high water content. Flower buds collected in November and stored at 0 and 5℃ for 4 weeks had shorter T_1 values than buds stored at 10℃ even though the floret water content and supercooling ability were similar. Thus, the short T_1 of cold acclimated buds hardened naturally or by storage at low temperatures is due to a combination of both reduced water content and temperature.
日本植物生理学会の論文