proembryo


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Related to proembryo: pre-embryo

proembryo

(prəʊˈɛmbrɪəʊ)
n, pl -bryos
(Botany) any of the stages prior to embryo formation in plants
References in periodicals archive ?
proembryos), and it usually takes approximately 4-6 months of after-ripening for the proembryo to mature in order for the seed to germinate (Grobbelaar, 2004; Woodenberg et al.
After double fertilization the proembryo developed into a mature embryo going through the clavate globular heart torpedo and cotyledon stages.
1975) estimate that embryo abortion in this initial stage of proembryo development occurs within 1 to 7 d of fertilization.
The two daughter cells of ca commonly divide by a vertical wall and constitues to form a proembryo of four cells.
There was considerable variability in the appearance of the proembryo at 24 HAP.
development sequence: proembryo, precotyledonary embryo, cotyledonary embryo, and bipolar embryo.
Proembryo proliferation and development could be quantified after
Aboveground organs of sporophyte from: 0 = apical hemisphere of proembryo; 1 = basal hemisphere of proembryo; 2 = lateral hemisphere of proembryo.
During early embryogenesis, from the quadrant and octant stages up to the globular proembryo [ILLUSTRATION FOR FIGURE 1A OMITTED], there is no significant difference between monocots and dicots (Natesh & Rau, 1984).
Somatic proembryo production from excised, wounded zygotic carrot embryos on hormone-free medium: Evaluation of the effects of pH, ethylene and activated charcoal.
The observation in the scanning electron microscope allowed to corroborate the initial development the proembryos as well as their frequency and asynchrony.
These observations have been noticed by Jurgens [7]; Weijers and Jurgens [19]: by the formation of globular embryos or primary somatic embryos begins with the formation of a single cell forming the apical-basal axis, then the proembryos, leading to the globular embryo.