Email this article EVALUATION OF EFFICIENCY OF IN SITU AND EX SITU TECHNOLOGIES FOR CONSERVATION OF GENTIANA L. SPECIES
Abstract
The introduction of the conservation regime does not fully provide the stabilization of specimens in the populations of the given species as well as the restoration of their natural habitat.
This is caused by a number of factors: long pastoral load, recreation, plant gathering (picking and digging up); the recent strengthening of the reserve-generating successions because of highland livestock farming husbandry decay; transformation of miscellaneous-cereal groups into firm bunchgrass secondary cenoses; increased projective shrubs coverage of Duschekia viridis (Chaix) DC, Juniperus sibirica Bugsd and Pinus mugo Turra in highland groups; climatogenic changes causing thermal regime change and shifting of plant zones to higher hypsometric levels.
Viability and reproduction of Gentiana species in ex situ collections depend on thermal and ombro-regimes, chemical composition of soil, intensity of solar insolation and light spectral composition to meet the natural needs of the species. If the mentioned factors are inappropriate for the ecological and physiological needs of the species, it is difficult to get viable collections of plants ex situ.
Using in repatriate projects the planting material obtained in ex situ conditions different from natural habitats of the species causes 50 % loss of the specimens in the first years of their vegetation.
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DOI: https://doi.org/10.25128/2078-2357.21.4.4
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