Hormones in Pear Seeds. II. Levels of Abscisic Acid, Dihydrophaseic Acid, and Their Metabolites in Relation to Seed Dormancy in Several Pyrus Species1
Open Access
- 1 May 1978
- journal article
- Published by American Society for Horticultural Science in Journal of the American Society for Horticultural Science
- Vol. 103 (3) , 314-317
- https://doi.org/10.21273/jashs.103.3.314
Abstract
Concentrations of abscisic acid (ABA), dihydrophaseic acid (DPA), and their metabolites were measured in mature pear seeds, using gas-liquid chromatography (GLC). ABA content of Pyrus communis L. cv. Bartlett seeds fell during imbibition, but was not affected by temperature (4 vs. 21°C) or time (0 to 4 weeks) of stratification in a moist medium. Levels of DPA and 3 of its metabolites were not correlated with dormancy. The amount of chilling required to break dormancy was not correlated with ABA or DPA content in imbibed, non-stratified seeds of 6 Pyrus species.Keywords
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