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The effect of light on endogenous cytokinin levels in seeds ofRumex obtusifolius

✍ Scribed by J. Staden; P. F. Wareing

Publisher
Springer-Verlag
Year
1972
Tongue
English
Weight
342 KB
Volume
104
Category
Article
ISSN
0032-0935

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✦ Synopsis

Exposure of Rumex obtusifolius seed to red light resulted in a rapid increase in extractable cytokinins. This increase can be reversed if the red light treatment is immediately followed by far-red irradiation. In germinating seed hardly any cytokinin activity could be detected in the butanol and aqueous extracts. An increase in the amount of activity present in the petroleum ether extracts of these seeds was, however, observed.The present findings suggest that cytokinin activity in light-sensitive seeds could be under the control of phytochrome.

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