Boron-Mediated Plant Somatic Embryogenesis: A Provocative Model
Figure 3
Developmental stages of somatic embryogenesis in the genus Gossypium, an established model system for indirect somatic embryogenesis [38]. It involves three major stages: (a) initial callus induction, (b) middle callus growth, and (c) late embryogenic callus induction phase. (d) Fully-grown somatic embryos are developed from the embryogenic callus. The cotton cotyledonary explants were used for initial callus initiation followed by the induction of embryogenic calli (shown by white arrows) and eventually leading to the development of somatic embryos (shown by black arrow).
