[Properties of the initial stages of embryoidogenesis in vitro in wheat calli of various origin ].

The formation of embryoids obtained in vitro both in the culture of anthers and in the culture of the germs of spring soft wheat was analyzed using light microscopy and electron microscopy. The features ofembryoid for- mation in the calli of both types are detected.

[Wheat androgenic embryoids and calli: data of scanning electron microscopy]. / Androgennye émbrioidy i kallusy pshenitsy: dannye skaniruiushchei élektronnoi mikroskopii.

The surface of wheat androgenic embryoids and calli at different developmental stages was studied using SEM. The embryoids were already characterized by regular cell divisions at the early developmental stages, while the calli were represented by irregular cell conglomerates. This trend was preserved during further development of androgenic structures. SEM studies of the surface of so-called secondary embryoids confirmed these observations.