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The Effects of Light and Temperature on Yellow Nutsedge (Cyperus esculentus) Basal-Bulb Formation

Published online by Cambridge University Press:  12 June 2017

E. W. Stoller
Affiliation:
U.S. Dep. Agric., Agric. Res. Serv., Agron. Dep. Univ. of Illinois, 1102 S. Goodwin, Urbana, IL 61801
Joseph T. Woolley
Affiliation:
U.S. Dep. Agric., Agric. Res. Serv., Agron. Dep. Univ. of Illinois, 1102 S. Goodwin, Urbana, IL 61801

Abstract

Investigations were conducted to determine whether light, temperature, or their interaction stimulated primary basal-bulb formation on underground stems of yellow nutsedge (Cyperus esculentus L.) seedlings grown from tubers. Basal-bulb formation results when internodes shorten and leaves lengthen. When seedlings were grown without medium around the underground shoots, a temperature alternation of 10C stimulated basal-bulb formation; light did not affect the process. When seedlings were grown with medium around the underground shoots, either light or alternating temperature stimulated basal-bulb formation. Nine colors of light gave the same stimulus as white (fluorescent) light. Phytochrome did not appear to be the photoreceptor for the stimulus, as both red and far-red light responses were identical to that of white light.

Type
Research Article
Copyright
Copyright © 1983 Weed Science Society of America 

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References

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