Introduction to our ‘Guest Blog’ below (by Shelagh McCartan)
During September, I was able to attend a very well-organised conference in Vitoria-Gasteiz, Spain (IUFRO Working Party 2.09.02 – Somatic Embryogenesis and Other Vegetative Propagation Technologies). For more information on the conference click here. I learned a great deal, particularly around the problems regarding ‘maturation of embryos’ and ‘conversion to plantlets’, and I believe that there is scope for input from seed scientists. I was particularly fascinated by the presentation by Jeff Hartle and his colleagues from Weyerhaeuser on ‘manufactured seeds’, and requested Jeff to send us some more information on this interesting topic.
Guest Blog by Jeff Hartle (MSeed Development Scientist, Weyerhaeuser Co.)
Modern agriculture often requires the planting of large numbers of genetically identical plants that have been selected to have advantageous properties. Production of new plants by sexual reproduction, which yields botanic seeds, is usually not feasible. Asexual propagation, via several pathways has been used for many years to produce large numbers of genetically identical individuals. In many species these are called varieties. One method to produce varieties is to use somatic embryogenesis. At Weyerhaeuser, we have developed machinery, protocols and logistics for the large-scale automated production of conifer somatic embryos. We have also developed a synthetic seed technology we call ‘manufactured seed’ that are made on an automated assembly line. This system allows large quantities of manufactured seed to be produced with minimal labor. As compared to most clonal techniques, the use of somatic embryos with manufactured seed allows steady-state manufacturing. As manufactured seed are created, they can be stored allowing a large quantity to be produced over time. When conditions are right for planting, the manufactured seed can be pulled from storage and planted en-masse. Manufactured seed also allows for centralized manufacturing with shipping to various facilities for planting. We have tested manufactured seed with several conifer species, but also found good performance with dissected corn, wheat and soybean embryos. For further information, click here.