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Identification of endogenous gibberellins by feeding of GA12 in Chinese yam, Dioscorea opposita


, : Identification of endogenous gibberellins by feeding of GA12 in Chinese yam, Dioscorea opposita. Korean Journal of Crop Science 48(2): 68-72

The metabolism of GA12 in the Chinese yam (Dioscorea opposita Tsukune) was examined to identify endogenous gibberellins. GA12 was metabolized to GA53, GA44, GA19, GA20, GA1, GA8, GA15, GA24, GA9, GA36 and GA4. Radioactivity of GAs in non C-13 hydroxylation route was five-fold higher than that of early C-13 hydroxylation in analysed GA-metabolites. Radioactivity of GA4 was always four times higher than that of GA1 at every feeding time.

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