If you're interested in reading more about the past, present, and future of seeds and the seed industry, check out this list of books:

American Dreamer: The Life and Times of Henry A. Wallace
John C. Culver and John Hyde, New York, Norton (2000)

Martha Newell McGloughlin & Teagace, Dublin, Ireland (2000)
The present position and future development of red, white, and green biotechnology, including a chapter on crop biotechnology.

Bountiful Harvest: Technology, Food Safety and the Environment
Thomas R. DeGregori, The CATO Institute (2002)
Concise Encyclopedia and Crop Improvement: Institutions, Persons,
Theories, Methods, and Histories

Prof. Rolf Schlegel, Haworth Press, New York, London, Oxford, USA (2007)

Lords of the Harvest
Daniel Charles, Perseus Publishing, Cambridge, MA (2001)  

The Man Who Fed the World: Nobel Peace Prize Laureate Norman  Borlaug and His Battle to End World Hunger
Leon Hesser, Durban House Press

The Master of Seeds-Life and Work of Claude Hope
Ricardo Arias Martinez, Burpee Books (1992)  

Mendel in the Kitchen
Nina Feroroff, Ph.D., Joseph Henry Press (2004)
A scientist's view of genetically modified food

Merchants of Grain
Dan Morgan, Viking Press (1972)

People, Plants, and Genes: The Story of Crops and Humanity
Denis J. Murphy,  Oxford University Press (2007)

Plant Breeding and Biotechnology
Societal Context and the Future of Agriculture
Denis J. Murphy, Cambridge University Press (2007)

The Politics of Precaution
Robert Paarlberg, Ph.D., Johns Hopkins University Press (2001)
For the International Food Policy Research Institute (IFPRI)
Genetically modified crops in developing countries

Roswell Garst: A Biography
Harold Lee, Iowa State University Press, Ames, IA

Seed Wars
Keith Aokia, Carolina Academic Press (2008)
Controversies and cases on plant genetic resources and intellectual property

Seeds of Change: Six Plants that Transformed Mankind
Henry Hobhouse (1995)

Starved for Science
Robert Paarlberg, Ph.D.,Harvard University Press (2008)
How biotechnology and its potential benefits to subsistence farmers is being kept out of Africa

The Story of Corn
Betty Fussell, Albert A. Knopf, New York (1992)  

The Truth About Organic Foods
Alex Avery, Henderson Communications LLC (2006)