Histocytological Analysis of Callogenesis and Somatic Embryogenesis from Cell Suspensions of Date Palm (Phoenix dactylifera)

Abstract

This study contributes to understanding the whole process of somatic embryogenesis, but two specific questions remain to be answered: what factors are involved in the reactivation of the somatic cells at the beginning of the initial callogenesis, and why do the somatic embryos not accumulate proteins in their tissues during maturation?

Regeneration of <i>in Vitro</i> Shoot and Root Structure through Hormone Manipulation of Coconut (MATAG F2) Zygotic Embryos

“…Feher et al [10] reported that meristematic cells have to be dedifferentiated and their cell division cycle has to be activated during the transition. Similar clarification were also reported in other monocot species of Curcuma longa [11], Cocus nucifera [12], Phoenix dactylifera [13] and Elaeis guineensis [14].…”

Embryogenic calli induced in interspecific (Elaeis guineensis x E. oleifera) hybrid zygotic embryos

“…The embryogenic sectors would originate pro-embryos in the globular stage, which should individualize per se and regenerate complete plantlets, as had been our first expectation because this last pattern of development was observed by Teixeira et al (1993) for calli from Tenera immature embryos. It was reported by Sané et al (2006) for secondary calli of immature date palm leaves too.…”

Somatic embryogenesis in Acrocomia aculeata Jacq. (Lodd.) ex Mart using the thin cell layer technique

“…Somatic embryogenesis holds promise as a technique for palm tree propagation, especially when other propagation techniques prove too difficult or are unviable (Sané et al 2006;Steinmacher et al 2007c). It can be induced in different types of explants, such as zygotic embryos, inflorescences, shoot tips and immature leaves, and may allow the production of many identical plants (Steinmacher et al 2007 a;.…”