Add time:09/25/2019 Source:sciencedirect.com
The L-ascorbic acid (AA) content of pollen from three cultivars of Lilium longiflorum Thunb. was 260–280 μg/g fresh wt. of pollen. During germination ascorbic acid content gradually decreased reaching 70% of the original value at 6 h. Pollen germinated in media containing 0.29 M D-glucose (an osmoregulator and carbon source) failed to synthesize ascorbic acid but pollen germinated in 0.29 M pentaerythritol (a non-metabolizable osmoregulator) supplemented with L-GALACTONO-1,4-LACTONE (cas 1668-08-2) (L-GalAL) did form ascorbic acid, dependent upon the concentration of the lactone. Lycorine inhibited germination but had negligible effect on the conversion of L-GalAL to AA.
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