CONTENTS 



Page 



Preface iii 



Introduction 1 



History and origin 3 



Geographic distribution 3 



Botany 4 



Classification 4 



Morphology 5 



Cytology 7 



Varieties 12 



Culture 15 



Environmental requirements 15 



Land preparation and planting 15 



Pest control .- 17 



Harvest and yields 19 



Storage 20 



Culinary characteristics 22 



Composition 22 



Potential use 22 



Literature cited 24 



Acknowledgment 26 



iv 



