Environmental, Physiological and Chemical Controls of Adventitious Rooting in Cuttings provides a review of the environmental, physiological and chemical controls of adventitious rooting in cuttings obtained from plants. In plants, adventitious roots, which are highly useful for vegetative propagation (or clonal propagation) are produced mainly from leaves, hypocotyls, stems or shoots. Vegetative propagation may occur naturally by using propagules such as roots, underground and aerial stems, leaves, buds and bulbils. It may also be done artificially through regenerative organs (rhizomes, bulbs, and corms) and by utilizing specialized methods, like cutting, grafting and layering. This book covers the latest tactics surrounding these processes.
As a plethora of factors affect the adventitious rooting of cuttings, adding to the complexity of the phenomenon. The main factors which control adventitious root formation are types of cuttings, presence of leaf area on cuttings, types of hormones and their concentration, duration of hormonal treatment (quick dip, long soak, dry dip, spray dip, or total immerse method), maturation (juvenile or mature), genotype, explant position, and more, all of which are discussed here.
1. Physiology of adventitious root formation in cuttings: An overview 2. Environmental control of adventitious rooting in cuttings 3. Molecular control of adventitious root formation 4. Genetic approach of adventitious root formation in cuttings 5. Hormones homeostasis and signaling during adventitious root formation in cuttings 6. Transcriptome analysis of auxin induced adventitious root formation in cuttings 7. Metabolism during adventitious root primordium initiation and development 8. Anatomical changes during adventitious root formation in cuttings 9. Involvement of wound response and primary metabolism during adventitious root formation in cuttings 10. Role of auxin in adventitious root formation 11. Role of hydrogen peroxide in adventitious root formation 12. Role of nitric oxide in adventitious root formation 13. Role of jasmonic acid in adventitious root formation 14. Role of 2,4-D in adventitious root formation 15. Role of cytokinins in adventitious root formation 16. Role of polyamines in adventitious root formation 17. Role of strigolactones in adventitious root formation 18. Role of phenolic compounds in adventitious root formation 19. Role of Plant Growth-Promoting Rhizobacterium in adventitious root formation 20. In vitro micrografting to induce juvenility and improve rooting 21. Natural variation in adventitious root formation 22. Adventitious root formation in cuttings as influence by genotypes, branch position, leaf area and types of cuttings 23. Adventitious root formation in cuttings and effects of maturation (juvenile and mature phages) 24. Cloning by cuttings: Hormonal characteristics in relation crown position, rooting competence, and orthotropism as ramets 25. Micropropagation in mature trees by manipulation of phase change, stress and culture environment 26. Macropropagation in mature trees by manipulation of phase change, stress and culture environment
Azamal Husen served as Professor and Head of the Department of Biology, University of Gondar, Ethiopia and is a Foreign Delegate at Wolaita Sodo University, Wolaita, Ethiopia. Previously, he was a Visiting Faculty of the Forest Research Institute, and the Doon College of Agriculture and Forest at Dehra Dun, India. Husen’s research and teaching experience of 20 years includes biogenic nanomaterial fabrication and application, plant responses to nanomaterials, plant adaptation to harsh environments at the physiological, biochemical, and molecular levels, herbal medicine, and clonal propagation for improvement of tree species. Dr Husen contributed to R&D projects of World Bank, ICAR, ICFRE, JBIC etc. He has >250 publications . He is Series Co-Editor of ‘Plant Biology, Sustainability and Climate Change’, Elsevier.
