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Involvement of ethylene in the abscission of flowers and petals of Leptospermum scoparium
Author(s) -
Zieslin Naftaly,
Gottesman Varda
Publication year - 1983
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.1399-3054.1983.tb04152.x
Subject(s) - abscission , ethylene , petal , climacteric , botany , biology , flor , shoot , horticulture , biochemistry , genetics , menopause , catalysis
Excised vegetative and flowering shoots of Leptospermum scoparium Forst. emanate ethylene in a climacteric time course. Relatively high concentrations of applied ethylene were required to cause flower abscission. Flowers and petals dropped only if they were exposed to a high relative humidity, while at a low relative humidity the flowers dried out and shrivelled without abscission. Silver thiosulphate prevented ethylene‐induced, but not natural abscission of mature flowers. A rise in ethylene evolution followed treatment with silver thiosulphate in both young and mature flowers. Benzyl adenine prevented natural abscission and inhibited ethylene evolution, while ethylene‐induced abscission remained unaffected.