Physiology of oil seeds: I. Regulation of dormancy in virginia-type peanut seeds

Ketring , D.L. and Morgan , P.W. (1970) Physiology of oil seeds: I. Regulation of dormancy in virginia-type peanut seeds. Plant Physiology, 45 (3). pp. 268-273.

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Abstract

The germination and ethylene production by dormant Virginia-type peanut seeds were observed in relation to phytohormone treatments that could conceivably release the dormancy of these seeds. A comparison was made between the effects of these treatments on the less dormant apical seeds and the more dormant basal seeds. Indole-3-acetic acid did not stimulate ethylene production by, or germination of, the dormant seeds to any extent. Gibberellic acid at 5 x 10(-4) M stimulated ethylene production by apical seeds to 17 millimicroliters per hour and germination to only 40% above the control. The more dormant basal seeds were affected even less by gibberellic acid than the seeds. Ethylene gas at 8 microliters per liter stimulated germination to 85% above the control for both apical and basal seeds. At this ethylene concentration the physiology of the more dormant basal seeds was altered, so that they behaved in a manner similar to the inherently less dormant apical seeds. 2-Chloroethylphosphonic acid at 10(-3) and 5 x 10(-4) M provided results similar to ethylene gas. Both apical and basal seeds germinated 100% at 48 hours. Among the phytohormones tested in this study, ethylene gas produced the greatest germination at low concentrations, and it appears must directly related to initiating the reactions required for converting the quiescent cells to an active state of growth.

Item Type: Article
Additional Information: SNNigam Collection
Uncontrolled Keywords: Physiology, Oil seeds, Dormancy, Peanut seeds
Author Affiliation: Department of Plant Sciences, Texas A. & M. University, Texas
Subjects: Crop Improvement
Plant Physiology and Biochemistry > Plant Physiology
Social Sciences > Plant Physiology and Biochemistry > Plant Physiology
Divisions: Groundnut
Depositing User: Mr Arbind Seth
Date Deposited: 25 Apr 2013 14:20
Last Modified: 25 Apr 2013 14:20
Official URL: http://dx.doi.org/10.1104/pp.45.3.268
URI: http://eprints.icrisat.ac.in/id/eprint/10360

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