Download PDF by Erwin Bunning, Hermut Wilhelm Pfeffer: Ahead of His Time: Wilhelm Pfeffer, Early Advances in Plant

By Erwin Bunning, Hermut Wilhelm Pfeffer

ISBN-10: 0886291038

ISBN-13: 9780886291037

This biography examines the existence and paintings of Wilhelm Pfeffer (1845-1920), a pioneer of contemporary experimental biology who expected a lot during this box that's now taken without any consideration. The e-book exhibits Pfeffer as a instructor and author with vast study pursuits, incisive experimental talents, and a questing brain. Dr H.Wilhelm Pfeffer, grandson of Wilhelm Pfeffer, presents the interpretation for this English version.

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Extra resources for Ahead of His Time: Wilhelm Pfeffer, Early Advances in Plant Biology

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Individual functions become more pronounced with their progressive development and their specialization, or these functions only become possible as the result of greater differentiation. With the adaptation to a specific primary function, the associated processes become clearer, and they are less clouded by other activities of the living organism. Therefore, the study of such specialized processes is of eminent significance, and it is an important tool for gaining an insight into the workings of the protoplast.

P. 19,20). Pfeffer made a continuous effort to prove that specific abilities of some plants are merely the result of the specialization of characteristics typical of all plants. In 1875, Darwin published a book on insect-eating plants, and 45 Ahead of His Time: Wilhelm Pfeffer many scientists assumed that this new kind of nutritional behaviour represented a special physiological principle. Pfeffer argued against this perception in 1877, showing that this was merely a specialization of the general manner in which plants absorb nutrition.

Similarly, he explained that the clearly developed Tastreizbarkeit [sensitivity to touch] of twining plants is not unique to these plants, but it is present in many other varieties of plants. In his last published paper in 1916, he deals once more with the subject in detail. He discusses experiments undertaken in his laboratory by P. Stark and writes: "Based on this and other findings, we may assume that the property of sensitivity to touch exists quite extensively, although it is not as well developed" (as in twining plants).

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Ahead of His Time: Wilhelm Pfeffer, Early Advances in Plant Biology by Erwin Bunning, Hermut Wilhelm Pfeffer

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