This book has been written to explain particular items in leading vegetables in the developing countries. The description in the text consists of general principles of vegetable production, aspects of seed production and production practices for selected vegetables. The manner of explanations in each type of a plant is not always equally arranged. For example, with round potatoes, a number of templates/photos have been included to aid understanding of this important vegetable crop. The author hopes that this book will contribute to the development of vegetable seed production and general vegetable horticulture in the developing countries.