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Bud Sprouting and Growth of Purple Nutsedge Altered by Benzyladenine

Published online by Cambridge University Press:  12 June 2017

Chris K. H. Teo ,
Leo E. Bendixen  and
Roy K. Nishimoto
Chris K. H. Teo
Affiliation:
The East-West Center, Honolulu, Hawaii 96822
Leo E. Bendixen
Affiliation:
Ohio State Univ. and Ohio Agr. Res. and Dev. Center, Columbus, Ohio 43210
Roy K. Nishimoto
Affiliation:
Univ. of Hawaii and Hawaii Agr. Exp. Sta., Honolulu, Hawaii 96822
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Abstract

Varying concentrations of benzyladenine (BA), indoleacetic acid (IAA), gibberellic acid (GA), abscisic acid (ABA), and 2-chloroethylphosphonic acid (ethephon) were used to induce sprouting of dormant purple nutsedge (Cyperus rotundus L.) tubers. BA at 50 to 300 ppm stimulated sprouting. The continuous presence of BA during the sprouting period was necessary to give significant sprout stimulation. Neither IAA at 1, 10, or 100 ppm; GA at 10, 100, or 1000 ppm; nor ethephon at 10, 100, or 1000 ppm had stimulatory effects on sprouting. ABA counteracted the stimulatory effects of BA when tubers were treated with ABA following BA treatment. Sprouting was markedly greater at 33 C day, 25 C night than at 24 C day, 17 C night. Growth of plants originating from tubers pretreated with 100 ppm BA did not differ significantly from the controls. Sustained BA applications at 100 and 200 ppm produced numerous plants with tuft-type growth habit, delayed flowering, and reduced the number of inflorescences. Numerous short, diageotropic rhizomes were produced.

Type
Research Article
Information
Weed Science , Volume 21 , Issue 1 , January 1973 , pp. 19 - 23
Copyright
Copyright © 1973 Weed Science Society of America 

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