Қазақ ұлттық қыздар педагогикалық университеті / Казахский национальный женский педагогический университет

Постоянный URI для этого сообществаhttps://cris.qyzpu.kz/handle/123456789/1

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Язык: АнглийскийТема: search.filters.subject.bioindicators

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    Pollen Morphology of Broadleaf Trees Growing in Different Health Conditions in the City of Aktobe
    (2021-07-01)
    Nurlygul Utarbayeva
    ;
    С. А. Айпеисова
    ;
    А. А. Мауи
    ;
    Erzhan T. Kazkeev
    ;
    Gulnara BIMAGAMBETOVA
    The purpose of this work is to comparatively assess pollen viability of five plant species growing in different areas of the city of Aktobe, Kazakhstan (N 50Њ18¢, W 57Њ10¢). Pollen viability was assessed through iodine staining on the samples of pollen grains harvested between April and June 2017 from 100 plants of 5 species growing in the industrial zones, parks, and along highways: Ulmus laevis Pall., Ulmus pinnato-ramosa Dieck., Acer negundo L., Syringa vulgaris L., Populus tremula L. The minimum percentage of fertile pollen grains that was found in Ulmus laevis species has been detected in samples from the industrial zones, up to 68%.For Ulmus pinnato-ramosa, the minimum proportion of fertile pollen grains was 30%.For Acer negundo and Syringa vulgaris, similar trends were obtained.All plant species except Ulmus laevis (0.42) and Populus tremula (0.37) showed no relationship between the size of pollen grains and the intensity of their color change.Among all plant species under study, two (Ulmus laevis and Populus tremula) had the potential to act as model plant species and bioindicators of urban pollution.All five plant species demonstrated the highest proportion of defective pollen grains in the industrial zones, up 98%.
    Цитирования (OpenAlex) 7Цитирования (OpenCitations) 7
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    Reaction of Aquatic Plants of Small Rivers of the Turkestan Region of Kazakhstan to Heavy Metal Ions
    (Polish Society of Ecological Engineering, 2022-04-21)
    Akmaral U. Issayeva
    ;
    Zhanar Myrzabayeva
    ;
    K. Kidirbayeva
    ;
    Talgat Ibragimov
    ;
    G.U. Baitasheva
    Heavy metals are some of the environmental pollutants that have a serious impact on the environment.The analysis of hydromacrophytes growing in small rivers of the south of Kazakhstan with different contents of heavy metal salts revealed that the morphometric indicators of the same plant species differ significantly, depending on the level of total mineralization of the aquatic environment in different rivers of the Turkestan region.It has been established that two plant species can be used to bioindicate the content of lead ions in the aquatic environment: Azolla caroliniana Willd.and Veronica beccabunga L., which must be introduced into the tested aqueous solutions in the amount of 1.0 kg/m 3 and 1.5-2.0kg/m 3 , respectively, to fully cover the water column at different depths.The first morphological changes in plants, in the form of destruction of the structure of chloroplasts along the edges of unfolded leaves in A. caroliniana Willd.and slight withering of the lower underwater leaves in V. beccabunga L., occur already at a 1.5 mg/l Pb 2+ content in water, and a further increase in the content of lead ions in water to 600.0-800.0mg/l leads to the death of plants.
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