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Characteristic Stimulation by Ethylene of Respiration in Dutch Iris Bulbs
Author(s) -
KAMERBEEK G. A,
VERLIND A. L.
Publication year - 1972
Publication title -
physiologia plantarum
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.351
H-Index - 146
eISSN - 1399-3054
pISSN - 0031-9317
DOI - 10.1111/j.1399-3054.1972.tb01128.x
Subject(s) - stimulation , respiration , iris (biosensor) , ethylene , horticulture , chemistry , botany , biology , neuroscience , computer science , biochemistry , artificial intelligence , catalysis , biometrics
The low steady‐state basic respiration of iris bulbs ( Iris bollandica cv.‘Wedgwood') at 30°C can be enhanced by ethylene. When ethylene is administered continuously a lag period of 4 hours is followed by an increase in the rate of respiration showing two peaks, one after 24 hours and the other after 3 to 4 days. Thereafter, the respiration rate decreases gradually, notwithstanding the presence of ethylene. Concentrations of less than 0.05 microlitre ethylene per litre have no effect, and the maximum effect is observed at concentrations of 3 microlitre per litre and higher. Between 0.2 and 2 microlitre ethylene per litre the peak values of the first maximum are linearly proportional to the logarithm of the ethylene concentration applied. The characteristics of the respiratory response in iris bulbs are probably similar to those described for potato tubers and non‐climacteric fruits.