gametophytic apomixis

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

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

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.