Crop genetics is a practice which improves the productivity of crops. Mostly a trait is introduced in the crop which does not exist in it naturally. It aims at increasing yield, tolerance towards abiotic stresses and to alter the composition of the food. The different types of genetic modifications that exist are transgenic, subgenic and cisgenic. The book presents researches and studies performed by experts across the globe. For all those who are interested in crop genetics, this book can prove to be an essential guide.