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Excerpt from Suspensor and Early Embryo of Pinus: A Dissertation
It has long been recognized that the embryos of plants furnish trustworthy morphological features for comparison in the study of phylogeny, but the surprising variations found in the proembryos of various gymnosperms have always been more or less of a stum bling block. This work was undertaken with the hope that a more critical study of the suspensor and early embryo of Pinus and of the phenomenon of polyembryony might prove of value in properly interpreting the rather flexible program that has been ascribed to this genus. Here it is, also, that we find a striking parallel to some of the early cleavage phenomena involved in the biology of twins in animals, a subject of some current interest to zoologists.
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Paperback. Zustand: New. Print on Demand. This book offers groundbreaking insights into the intricacies of pine embryology and the evolutionary relations between conifers via the meticulous examination of Pinus. Integrating historical context and state-of-the-art techniques, the author unravels the developmental stages of Pinus embryos, from the initial divisions to the differentiation of key structures like the stem tip, cotyledons, and root tip. Through extensive dissections and serial sections, the book challenges existing assumptions and sheds new light on the dynamics of conifer embryology. Detailed descriptions, illustrations, and thought-provoking discussions illuminate the subject, making this book invaluable for botanists, evolutionary biologists, and anyone seeking a deeper understanding of plant development and the diversity of life. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item. Bestandsnummer des Verkäufers 9781334415067_0
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