Lloyd Thomas Evans 1927–2015

Abstract

Lloyd Evans, a leading plant scientist, published extensively on the regulation of flowering and on crop production during a lifetime spent in research at CSIRO. His significant achievements included: identification of a gibberellin plant hormone as a flowering regulator in the grass Lolium temulentum; discovery of a synthetic gibberellin growth retardant that blocked endogenous gibberellin synthesis; and discovery in Pharbitis of a novel biological flowering clock with a 12h (semidian) period. In crops, he established the impact on yield of photosynthate production and transport to competing sinks. Two of his books, Crop Evolution: Adaptation and Yield and Feeding the Ten Billion have had a major influence on agricultural research and policy. His ability to define research options led to many years of international advisory work. He was an Officer of the Order of Australia (AO), and was elected a Fellow of the Royal Society (FRS), and of the Australian Academy of Science (FAA) (including a term as president).