Abiotic stresses are major constraint to food production and will grow substantially in future limiting the production on most of the world’s cultivated land. Drought, extreme temperatures and saline soils are the key factors reducing productivity over vast tracts of arable land. The job of increasing vegetable yield represents an unprecedented challenge for agricultural scientists. The sooner we start, the better preparedness will be for the future. In the chapters of this book authentic information is presented on all biological disciplines relevant to production and improvement of oil seed and vegetable Brassicas. Each chapter of this book is prepared to give the treatment the advantage of both the extensive awareness and the indepth knowledge. The book will be of value to university students, research scholars and all those interested in production, research and agricultural planning in general.