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1 March 2002 Reflections on investigating dormancy-breaking chemicals—a balance of logic and luck
Marc A. Cohn
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In many cases, the logical presentation of scientific results masks the actual unfolding of experimental progress. Our work to identify the mechanisms by which chemicals break red rice seed dormancy is presented as an example. Doing the simplest experiments first, allowing the data to drive subsequent work, frequent and aggressive study of published literature, and examination of potentially key findings using multiple, interlocking strategies have been the keys to defining the relationship between the structure and action of dormancy-breaking chemicals. Our experiments show that chemical activity is dependent upon the lipophilicity as well as the nature and position of functional groups. However, the chemical that is applied to a dormant seed is not necessarily the chemical that actually breaks dormancy. A combination of approaches using structure–activity studies, metabolic inhibitors, and physiological measurements indicate that alcohols must first be metabolized to carboxylic acids to elicit germination of red rice. This report summarizes these findings as a personal account, illustrating the importance of logic, luck, and imagination in scientific discovery, as well as to highlight some important lessons about conducting research.

Nomenclature: Red rice, Oryza sativa L. ORYSA.

Marc A. Cohn "Reflections on investigating dormancy-breaking chemicals—a balance of logic and luck," Weed Science 50(2), 261-266, (1 March 2002).[0261:ROIDBC]2.0.CO;2
Received: 24 June 2001; Accepted: 5 October 2001; Published: 1 March 2002
Dormancy-breaking chemicals
seed dormancy
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