Abstract
A simple bioassay of gibberellic acid (GA3) based on the GA3-induced reduction of anthocyanin contents in young seedlings of tomato is described and compared with the amaranthin reduction test. It was found that GA3-induced reduction of anthocyanin in tomato seedlings was linear from 10−5 to 10 mg 1−1 GA3 whereas the reduction of amaranthin inAn aranthus caudatus seedlings was linear from 10−3 to 10 mg 1−1 GA3. From these results, it is concluded that the anthocyanin reduction test for GA3 is more sensitive at lower concentrations of GA3 than the amaranthin reduction test.
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Khan, M.I. Gibberellic acid bioassay based on the inhibition of anthocyanin production in tomato seedlings. Biol Plant 22, 401–403 (1980). https://doi.org/10.1007/BF02880475
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DOI: https://doi.org/10.1007/BF02880475