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Autor:
Michael R. Canfield
Once in a great while, as the New York Times noted recently, a naturalist writes a book that changes the way people look at the living world. John James Audubon's Birds of America, published in 1838, was one. Roger Tory Peterson's 1934 Field Guide to
Autor:
Michael R. Canfield
Never has there been a president less content to sit still behind a desk than Theodore Roosevelt. When we picture him, he's on horseback or standing at a cliff's edge or dressed for safari. And Roosevelt was more than just an adventurer—he was also
Publikováno v:
Annals of Botany. 75:143-150
The stay-green mutations cytG and Gd1d2 prevent the normal yellowing during senescence of soybean (Glycine max) leaves and cotyledons. Because light plays such an important role in regulating morphogenesis and it promotes the formation of chlorophyll