INHIBITORY EFFECT OF 5-BROMOURACIL AND 5-FLLTOROURACIL ON PHOTOPERIODICALLY INDUCED GERMINATION OF ERAGROSTIS SEED

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概要

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• 1. The inhibitory effects of 5-bromouracil and 5-fluorouracil on the photoperiodically induced germination of Eragrostis ferruginea seed were investigated. 5-BU was more effective than 5-FU in inhibiting germination, but less effective in suppressing seedling elongation. 2. The inhibition of germination by 5-BU was specifically exerted on the inductive dark process, which is essential to the photoperiodic germination induction. A high concentration (10^<-1> M) of 5-FU also elicited a complete inhibition of germination. 5-FU, however, did not affect the photoperiodic induction processes, but inhibited the process(es) subsequent to them. The inhibition of germination by 5-BU or 5-FU was alleviated by neither uracil, thymidine nor orotic acid. 3. The seedling growth was effectively inhibited by 5-FU, and the inhibition was reversed by uracil, uridine and orotic acid, but not by thymine and thymidine. The effect of 5-FU may, therefore, possibly be by virtue of its depressing action upon ribonucleic acid synthesis.

• 日本植物生理学会の論文

著者

• Fujii Tadashi

  Botanical Institute Faculty Of Science Tokyo University Of Education

• Fujii T.

  Botanical Institute, Faculty of Science, Tokyo University of Education

関連論文

• PHOTOCONTROL AND TEMPERATURE DEPENDENCE OF GERMINATION OF RUMEX SEEDS
• INHIBITORY EFFECT OF 5-BROMOURACIL AND 5-FLLTOROURACIL ON PHOTOPERIODICALLY INDUCED GERMINATION OF ERAGROSTIS SEED
• ON THE ANAEROBIC PROCESS INVOLVED IN THE PHOTOPERIODICALLY INDUCED GERMINATION OF ERAGROSTIS SEED
• SUCCESSIVE PROCESSES INVOLVED IN THE GERMINATION RESPONSE OF NASTURTIUM SEEDS

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