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THE EFFECTS OF ETHANOL ON ROOTING AND CARBOHYDRATE METABOLISM IN STEM CUTTINGS OF PHASEOLUS AUREUS ROXB.
Author(s) -
MIDDLETON W.,
JARVIS B. C.,
BOOTH A.
Publication year - 1978
Publication title -
new phytologist
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.742
H-Index - 244
eISSN - 1469-8137
pISSN - 0028-646X
DOI - 10.1111/j.1469-8137.1978.tb02633.x
Subject(s) - cutting , phaseolus , hypocotyl , ethanol , chemistry , sugar , botany , carbohydrate , horticulture , biology , food science , biochemistry
SUMMARY The number of roots induced by indolebutyric acid (IBA)in cuttings of light‐grown seedlings of Phaseolus aureus Roxb. is greatly inhibited by high levels of ethanol. When supplied alone to cuttings of dark‐grown seedlings increasing concentrations of ethanol progressively reduce the number of roots. The ethanol is glycosylated, at least in part, to ethyl‐β‐glucoside which reaches concentrations several‐fold greater in cuttings of light‐grown seedlings compared to those of dark‐grown seedlings. In the hypocotyl of cuttings from light‐grown seedlings the glucoside constitutes 26% of the extracted sugar and 1100 μg/g fresh weight after a treatment of 18 h with 2 ml/1 ethanol.