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Ethylene Production in the Cotton Plant ( Gossypium hirsutum L.) Canopy and Its Effect on Fruit Abscission 1
Author(s) -
Heilman M. D.,
Meredith F. I.,
Gonzalez C. L.
Publication year - 1971
Publication title -
crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.76
H-Index - 147
eISSN - 1435-0653
pISSN - 0011-183X
DOI - 10.2135/cropsci1971.0011183x001100010008x
Subject(s) - ethylene , abscission , gossypium hirsutum , malvaceae , biology , fiber crop , canopy , horticulture , botany , gossypium , atmosphere (unit) , biochemistry , catalysis , thermodynamics , physics
Using gas solid chromatography, ethylene was determined in excised plant tissue and in the atmosphere at midpoint of the mature cotton ( Gossypium hirsutum L.) canopy in the field. The ethylene produced from excised tissue was: leaves, 1,2 ✕ 10 −9 moles/g; immature capsules, 0.35 ✕ 10 −9 moles/g; bolls, 0.07 ✕ 10 −9 moles/g; and pink blooms, 2 ✕ 10 −9 moles/g. The ethylene in the atmosphere at the midpoint of the cotton canopy was 3.6 ✕ 10 −12 moles/ml while the atmosphere surrounding an individual pink bloom contained 8 ✕ 10 −12 moles/ml ethylene. Ethylene was applied at rates of 9.3 ✕ 10 −12 and 18.6 ✕ 10 −12 moles/ml to fruiting field‐grown cotton plants enclosed in plastic bags. A statistically significant increase in abscission of immature capsules and bolls was found for the 18.6 ✕ 10 −12 moles/ml‐treated plants.