Induction of hydrotropism in clinorotated seedling roots of Alaska pea,Pisum sativum L. |
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Authors: | Dr. Hideyuki Takahashi Mamoru Takano Nobuharu Fujii Masamichi Yamashita Hiroshi Suge |
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Affiliation: | (1) Institute of Genetic Ecology, Tohoku University, Katahira, 980-77 Aoba-ku, Sendai, Japan;(2) Space Utilization Research Center, Institute of Space and Astronautical Science, 229 Yoshinodai, Sagamihara, Japan |
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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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Keywords: | Clinostat Gravitropism Hydrotropism Pisum sativum L. Pea root Water potential |
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