ABSTRACT
In this second edition of Plant Propagation Concepts and Laboratory Exercises, we have combined the rst edition Chapters 36, “Sexual Reproduction in Angiosperms,” and 37, “Breeding Horticultural Plants,” into this single chapter, “Sexual Reproduction and Breeding.” These topics are so closely related that we believe that concepts are best presented as one unit. In addition to combining the aforementioned chapters, we have added some highresolution microscopic photographs of mitotic events that are comparable to the line drawings depicting the various phases of mitosis. We have maintained some blackand-white gures for clarity of presentation. Lastly, we have included in this edition a simple laboratory exercise involving the observation and frequency of mitotic
phases in the cells of onion as seen in longitudinal sections of root tips on prepared slides.
