Tamar Nadiradze, Nino Eradze

摘要

The article covers some information on anthropogenic influence upon natural ecosystems that is considered to be one of the strongest factors for reducing biodiversity of Georgian flora.With this purpose, some species of fam. Iridaceae that need to be protected under in situ conditions are being studied. The paper focuses on the fam. Iridaceae. This family is particularly interesting as it unites a considerable number of valuable, beautifully flowering plants with ornamental leaves, representing different biomorphs. Particularly rare and endangered species are: Iris iberica, I. Grossheimii, I. Lycotis, I. Camillae, I. Elegantissima, etc.We have carried out complex studies of bio-ecological peculiarities of bulbous geophytes and ephemeroids of genus Iridodictyum winogradowii, Ir. Reticulatum, Siphonastilis lasica and Iuno caucasica. There has been studied rhythm of growth and development of vital cycle of monocarpic shootings and ways of their propagation in the sub arid zone of East Georgia. There should be mentioned that they have perfectly adapted to the conditions. Such rare species of rootstock plants like Iris iberica, I. Carthalinical. Aphylla, I. graminea, I. imbricata, I. timofejewii, I. prilipkoana, I. musulmanica, Siphonastilis lazica and others even give abundant self-seedlings that undoubtedly makes it possible to protect them from being finally extinct.All the investigated plants can be recommended for using in landscape architecture under the conditions of East Georgia that will contribute to conservation of the valuable genofond of relict and endemic plants of Georgian flora.The work deals with the results of in situ conservation of some of rare and endemic species of fam. Iridaceae from Iridaceae Juss family. According to IUCN categories, the studied taxaare discussed as the endangered species in nature.