Читать книгу Principles of Plant Genetics and Breeding - George Acquaah - Страница 358

Whereas the prospect of commercial synthetic seed is appealing, several factors make this impractical at this time. Problems may occur at maturation, germination, rooting, shot apex formation, or acclimatization.

 Large‐scale production of high quality viable propagules remains a key challenge.

 A major limitation is the poor conversion of apparently normal propagules into normal plantlets.

 Improper development and maturation of somatic embryos causes poor germination and conversion problems.

 Poor storage of synthetic seeds due to lack of dormancy and stress tolerance in the somatic embryos.

 Mechanical damage, lack of oxygen supply, invasion by microbes, and lack of nutrients all contribute to poor germination of synthetic seeds.

Strategies are available for addressing some of these challenges. They vary among species and includes desiccation, a process that can damage the embryo.