Abstract
Roots of the agravitropic pea (Pisum sativum L.) mutantageotropum show positive hydrotropism, whereas roots of Alaska peas are hydrotropically almost non-responsive. When the gravitropic response was nullified by rotation on clinostats, however, roots of Alaska peas showed unequivocal positive hydrotropism in response to a water potential gradlent. These results suggest that roots of Alaska peas possess normal ability to respond hydrotropically and their weak hydrotropic response results from a counteracting effect of gravitropism.
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Takahashi, H., Takano, M., Fujii, N. et al. Induction of hydrotropism in clinorotated seedling roots of Alaska pea,Pisum sativum L.. J. Plant Res. 109, 335–337 (1996). https://doi.org/10.1007/BF02344481
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DOI: https://doi.org/10.1007/BF02344481