The classification, origins, distribution and economic importance of the major vegetable crops
The structure of edible alliums
The genetics and plant breeding of allium crops
Physiology of crop growth, development and yield
Interactions with other organisms: weeds, pests, diseases and symbionts
Agronomy and crop production
Crop storage and dormancy
Biochemistry, health benefits and food science of alliums.
Onions and other vegetable alliums by James L. Brewster. ISBN 9781845933999. Published by CABI in 2008. Publication and catalogue information, links to buy online and reader comments.