Triticale crop species has received substantial research support since the mid-20th century making it a commercial success in many countries, in diverse value propositions. However, no recent book captures the new knowledge and progresses made in more than 2 decades. The purpose of this work is to review and collate the new knowledge of triticale plant biology and agronomy, while considering the contribution of biotechnology enablers such as molecular markers, doubled haploid technology and genetic engineering in breeding for traits important for crop production, feed, food and industrial end-uses.