lec 4 - History of Horticulture: Lecture 4 Lecture 4...

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Unformatted text preview: History of Horticulture: Lecture 4 Lecture 4 Geography of Plant Domestication Alphonse de Candolle (1806–1893) Charles Darwin (1809–1882) 1858 Origin of Species Nicholas Ivanovitch Vavilov (1887–1943) Alphonse de Candolle (1806–1893) Alphonse De Candolle as a young botanist and at the height of his career Origin of Cultivated Plants (1882) 1. Presence of wild relatives 2. Historical 3. Names (linguistics) 4. Archeology (limited in De Candolle’s time— now a major source of evidence due to carbon dating techniques 1 History of Horticulture: Lecture 4 Charles Darwin (1809–1882) Charles Darwin as a young man and at the height of his career Darwin’s Famous Work “On the Origin of the Species by Means of Natural Selection, or the Preservation of Favoured Races in the Struggle for Life” (1859) “The Origin of the Species” for short The most influential book in all biology Concepts of Darwinism Evolution occurs; species not fixed at “creation” Evolutionary change gradual Primary mechanism is struggle for existence and survival of the fittest All species arose from a single original life form 2 History of Horticulture: Lecture 4 N.I. Vavilov (1887–1943) Vavilov’s Contribution to Plant Geography and Evolutionary Genetics Law of Homologous Series in Variation (1920) Centers of Origin of Cultivated Plants (1926) Center of Diversity = Center of Origin Plant species not uniform 8 Primary world centers Comprise small portion of earth (2–3% of land area) 640 species listed 5/6 Old World; 1/6 New World Jack Harlan (1917–1998) 3 History of Horticulture: Lecture 4 Just a few of the possible variations in tomatoes 4 History of Horticulture: Lecture 4 Seeds of many different plant varieties being packages for storage Seed vault at the National Seed Storage Laboratory at Fort Collins, Colorado 5 History of Horticulture: Lecture 4 Cryogenic preservation of seeds at Fort Collins 6 ...
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This note was uploaded on 04/24/2011 for the course HORT 306 taught by Professor Staff during the Spring '08 term at Purdue University-West Lafayette.

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lec 4 - History of Horticulture: Lecture 4 Lecture 4...

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