gametophytic apomixis

The research of the apomictic reproduction ability Trollius europaeus L., Adonis wolgensis Stev ex Dc and Anemonoides ranunculoides Holub. (Ranunculaceae)

Authors: Ermolaeva N. N., Kashin A. S.

During cytoembryological investigation of Toillius europaeus L., Adonis wolgensis Stev. and Anemoides ranunculoides (Ranunculaceae) the features of game- tophyte apomixis was found for the first time. The proporcion of ovules with the features of gametophyte apomixis was maked 16,32±6.12 in Trollius europaeus population, 5.82 ±1.82 in Adonis wolgensis population, 3.22 ±1.13% in Anemoides ranunculoides population.

The quality of pollen and cytoembryological signs of gametophytic apomixis in the populations of Chondrilla l. species the Lower Volga region

Authors: Polyakova Y. A., Ugolnikova E. V., Kashin A. S., Kondrateva (Popova) A. O.

It is shown that the plants of the five investigated species (C. juncea, C. graminea, C. ca-nescens, C. brevirostris, C. latifolia) are characterized by a high degree of defectiveness of pollen (60–80%) and the presence of cytoembryological marker signs gametophytic atomixis. This indicates a high probability of their ability to seed reproduction by apomixis. It is established that the frequency of detection of these signs varies significantly among years and between-population level. It is revealed that C.