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Evolution of ethylene by sulphur dust addition
Author(s) -
RecaldeManrique Luís,
DíazMiguel Manuel
Publication year - 1981
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.1399-3054.1981.tb02731.x
Subject(s) - ethylene , phaseolus , shoot , sulfur , primordium , biology , botany , horticulture , bloom , germination , chemistry , ecology , biochemistry , organic chemistry , gene , catalysis
Kidney‐bean plants ( Phaseolus vulgaris L. cv. Contender) were dusted with sulphur 25 days after germination. The amount of ethylene evolution was measured in shoots (with attached leaves) and roots from plants in several stages of development. The growth of shoots and roots was also measured, and the flowering time observed. The ethylene evolution was associated with precise morphogenic stages. The amounts of ethylene produced from sulphur treated plants, compared with that evolved from control plants, showed two stages of stimulation in shoots, one preceding full bloom and one preceding fruit‐set. Inhibition of ethylene evolution due to sulphur dust occurred in roots before initiation of floral primordia and before full bloom. The treatment with sulphur dust seemed to increase the number of leaves per plant, but only in the vegetative stage. Likewise, the earliness of flowering was enhanced. The effects of elemental sulphur dust treatments on ethylene evolution may be attributed to a slow oxidation of elemental sulphur in air producing SO 2 ; this SO 2 greatly enhances ethylene evolution from leaf tissues.