Author Archives: W. Roland Leatherwood

About W. Roland Leatherwood

W. Roland Leatherwood is a post-doctoral research associate at Cornell University.

Ethylene In The Greenhouse

Plants exposed to high concentration (> 0.05 ppm) ethylene exhibit a range of familiar symptoms, such as leaf yellowing, epinasty or abscission, and flower senescence (see Figure 1) and abscission. Usually, low concentrations (< 0.05 ppm) of ethylene precede high concentrations. Imagine a slightly malfunctioning heater becoming progressively worse. So, plant symptoms of low concentration