Ontogenesis and ontogenetic structure of cenotic populations of Eremurus anisopterus (Asphodelaceae) in the Kyzylkum desert (Uzbekistan)

New information about ontogenesis and ontogenetic structure of cenotic populations of the rarest endemic of Kyzylkum mountains Eremurus anisopterus (Kar. & Kir.) Regel is presented. Plant communities with participation of cenopopulations of the studied species are characterized. Duration of ontogenesis in natural conditions lasts more than 20 years. The vegetation cycle of E. anisopterus under Kyzylkum desert conditions lasts about five months, from March to July. The study showed that in different ecological and cenotic conditions of the Kyzylkum desert the E. anisopterus cenopopulations are normal but incomplete. Cenopulations in both studied plant communities (Eremerus–sagebrush and Eremurus–Peganum) are young. The ontogenetic spectrum is left-handed and coincides with the characteristic one. This, in general, reflects the biological features of E. anisopterus and indicates the stable state of the Kuldjuktau population of the species.

Hali tarjima qilinmagan