Books - Variation and Evolution in Plants

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	Books - Variation and Evolution in Plants

Variation and Evolution in Plants is a book written by G. Ledyard Stebbins. It was published in 1950 and is one of the key publications of the modern evolutionary synthesis as the first comprehensive publication to discuss the relationship between genetics and natural selection in plants. The book has been described by plant systematist Peter H. Raven as "the most important book on plant evolution of the 20th century" and it remains one of the most cited texts on plant evolution.

The book is based on the Jesup Lectures Stebbins delivered at Columbia University in October and November 1946 and is a synthesis of his ideas and the then current research on the evolution of seed plants in terms of genetics.

The book is written in 14 parts #Description and analysis of variation patterns #Examples of variation patterns within species and genera #The basis of individual variation #Natural selection and variation in populations #Genetic systems as factors in evolution #Isolation and the origin of species #Hybridization and its effects #Polypolidy I: occurrence and nature of polyploid types #Polyploidy II: geographic distribution and significance of polyploidy #Apomixix in relation to variation and evolution #Structural hybridity and the genetic system #Evolutionary trends I: the karyotype #Evolutionary trends II: External morphology #Fossils, modern distribution patterns and rates of evolution

The 643 page book cites more than 1,250 references and was the longest of the four books associated with the modern evolutionary synthesis. The other publications considered by many as the key works of the modern evolutionary synthesis, whose publication also followed the authors Jesup lectures, are Genetics and the Origin of Species
by Theodosius Dobzhansky, Ernst Mayr's Systematics and the Origin of Species
and George Gaylord Simpson's Tempo and Mode in Evolution
. Of great significance is that Variation and Evolution in Plants effectively killed any serious belief in alternative mechanisms of evolution for plants, such as Lamarckian evolution or soft inheritance, which were still upheld by some botanists.

Stebbins book Flowering Plants: Evolution Above the Species Level was published in 1974 and was based on a series of lectures called the Prather Lectures which he gave at Harvard. It is considered as an update to Variation and Evolution.

In January 2000 a colloquium was held in Irvine, California, to celebrate the 50th anniversary of the publication of Variation and evolution in plants. A 16 chapter book entitled Variation and evolution in plants and microorganisms: toward a new synthesis 50 years after Stebbins (ISBN 0309070996) was released to mark the occasion.

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