Induction of hydrotropism in clinorotated seedling roots of Alaska pea, Pisum sativum L |
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Authors: | Takahashi H Takano M Fujii N Yamashita M Suge H |
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Institution: | Institute of Genetic Ecology, Tohoku University, Sendai, Japan. |
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Abstract: | Roots of the agravitropic pea (Pisum sativum L.) mutant ageotropum show positive hydrotopism, 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 gradient. These results suggest that roots of Alaska peas possess normal ability to respond hydrotropicallly and their weak hydrotropic response results from a counteracting effect of gravitropism. |
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