Abstract
In culture of seedlings of the lazy strain of rice “Lazy Kamenoo”, the lazy character, i.e., a-geotropism, begins to appear when the coleoptile reaches about 3 cm in length. This character is diminished and the lazy coleoptile gets up upon exogenously applied IAA or tryptophan. The effect is much more remarkable with L-tryptophan than with D-tryptophan. It seems that the lazy character is due to deficiency of auxin, and it is caused by deficiency of tryptophan.
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References
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Yamazaki, Y. Lazy rice gotten up with tryptophan. Bot Mag Tokyo 98, 193–198 (1985). https://doi.org/10.1007/BF02488798
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DOI: https://doi.org/10.1007/BF02488798