ISHS Acta Horticulturae 251: III International Symposium on Growth Regulators in Ornamental Horticulture
EFFECTS OF ETHEPHON AND ACC ON GERMINATION OF AMARANTHUS CAUDATUS L. SEEDS PREINCUBATED IN 2.5-NORBORNADIENE |
| Author: | J. Kepczynski |
| Abstract:
Incubation of Amaranthus caudatus seeds in an atmosphere containing 2.5-norbornadiene, a competitive inhibitor of ethylene action, inhibited germination after transfer to air. The inhibition was antagonized when seeds were transferred from norbornadiene to air and solutions of ethephon (2-chloroethylphosphonic acid ). Inhibition due to preincubation in norbornadiene was also partially counteracted by a precursor of ethylene biosynthesis ACC ( 1-aminocyclopropane-1-carboxylic acid ). The presence of ethylene released from exogenous ethephon or synthesised from exogenous ACC is necessary for germination of Amaranthus caudatus seeds preincubated in norbornadiene. | |
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