Plant Physiol. Tips for Better Browsing
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

Plant Physiology 60:360-362 (1977)
© 1977 American Society of Plant Biologists

This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in Web of Science
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via CrossRef
Right arrow Citing Articles via Web of Science (16)
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Okagami, N.
Right arrow Articles by Kawai, M.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Okagami, N.
Right arrow Articles by Kawai, M.
Agricola
Right arrow Articles by Okagami, N.
Right arrow Articles by Kawai, M.
Articles

Dormancy in Dioscorea

Gibberellin-Induced Inhibition or Promotion in Seed Germination of D. tokoro and D. tenuipes in Relation to Light Quality 1,2

Nobuo Okagami and Masashi Kawai3

a Biological Institute, Faculty of Science, Tohoku University, Sendai, 980 Japan

Effects of light and gibberellic acid (GA3) application on the germination of Dioscorea tokoro Makino and Dioscorea tenuipes Franch. et Savat. were observed. For complete germination, seeds of both species required prechilling in moist condition before incubation at a higher temperature. Red light irradiation during the incubation after the prechilling promoted germination; blue, green, or far red light markedly inhibited the germination of both species.

Application of GA3 induced complicated changes in the germination of both species in relation to light quality. In the germination of D. tokoro, GA3 inhibited in the dark and red; however, it promoted germination in blue and far red light. GA3 promoted germination of D. tenuipes in the dark and in blue, green, or far red light. These phenomena are explainable by assuming two counteractive reactions (germination-promoting and germination-inhibiting) which are both activated by applied GA3.

3 Present address: Department of Biology, Faculty of Science, Hirosaki University, Hirosaki, 036 Japan.

1 This work was supported in part by a research grant from the Ministry of Education of Japan.

2 The experiments were performed with apparatus from the Environmental Control Section of the Biological Institute, Faculty of Science, Tohoku University.






HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
ASPB Publications PLANT PHYSIOLOGY® THE PLANT CELL
Copyright © 1977 by the American Society of Plant Biologists