Short Communication

Journal of Plant Research

, Volume 109, Issue 3, pp 335-337

Induction of hydrotropism in clinorotated seedling roots of Alaska pea,Pisum sativum L.

  • Hideyuki TakahashiAffiliated withInstitute of Genetic Ecology, Tohoku University
  • , Mamoru TakanoAffiliated withInstitute of Genetic Ecology, Tohoku University
  • , Nobuharu FujiiAffiliated withInstitute of Genetic Ecology, Tohoku University
  • , Masamichi YamashitaAffiliated withSpace Utilization Research Center, Institute of Space and Astronautical Science
  • , Hiroshi SugeAffiliated withInstitute of Genetic Ecology, Tohoku University

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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.

Key words

Clinostat Gravitropism Hydrotropism Pisum sativum L. Pea root Water potential