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Crop Improvement

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Walter P. Suza, Iowa State University

Kendall Lamkey, Iowa State University

Copyright Year: 2023

Publisher: Iowa State University Digital Press

Language: English

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Table of Contents

About the PBEA Series

  1. Basic Principles of Plant Breeding
  2. Pedigree Naming Systems and Symbols
  3. Genetic Variation and Germplasm Usage
  4. Refresher on Population and Quantitative Genetics
  5. Steps in Cultivar Development
  6. Breeding Methods
  7. Participatory Plant Breeding and Participatory Variety Selection
  8. Common Bean Breeding
  9. Cowpea Breeding
  10. Millet Breeding
  11. Rice Breeding
  12. Sorghum Breeding
  13. Sweetpotato Breeding
  14. Groundnut Breeding
  15. Cassava Breeding
  16. Seed Systems and Certification


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  • About the Book

    This textbook covers basic principles in the genetic improvement of crop plants. Emphasis is placed on methods of cultivar development in self-pollinating, cross-pollinating, and asexually propagating crops. Relevant examples of crop improvement research in Africa are utilized to cover factors affecting cultivar release, multiplication, and distribution of high-quality seed.

    About the Contributors


    Suza is an Adjunct Associate Professor at Iowa State University. He teaches courses on Genetics and Crop Physiology in the Department of Agronomy. In addition to co-developing courses for the ISU Distance MS in Plant Breeding Program, Suza also served as the director of Plant Breeding e-Learning in Africa Program ​(PBEA) for 8 years. With PBEA, Suza helped provide access to open educational resources on topics related to the genetic improvement of crops. His research is on the metabolism and physiology of plant sterols. Suza holds a Ph.D. in the plant sciences area (with emphasis in molecular physiology) from the University of Nebraska-Lincoln.

    Lamkey is the Associate Dean for Facilities and Operations for the College of Agriculture and Life Sciences at Iowa State University. He works in collaboration with the dean, associate deans, department chairs, college-level centers, and other unit leaders to ensure that operations directly advance the mission of the college and that resources are deployed wisely and efficiently. Previously, he served as the chair for the Department of Agronomy at Iowa State University, where, in addition to advocating for research and the PBEA program, he oversaw the Agronomy Department’s educational direction, its faculty, and Agronomy Extension and Outreach. 

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