Technogenic impact on physiological and cytogenic indices of reproductive organs of Tilia genus representatives

Abstract

Вивчено вплив комплексного забруднення навколишнього середовища оксидами сульфуру (IV) і нітрогену (IV) та важкими металами (залізо, манган, цинк, ртуть, хром) на фізіологічні й цитогенетичні показники генеративних органів представників роду Tilia L. в умовах степового Придніпров'я. Промислові викиди та вихлопи автотранспорту викликають зменшення кількості суцвіть на модельній гілці та квіток у суцвітті у рослин T. amurensis L. та T. cordаta Mill. У досліджених видів лип, які зростали у забрудненій зоні, виявлено зниження довжини пелюстки та кількості пелюсток у квітці, а довжини тичинки-лише у T. cordаta. В умовах техногенезу зменшується фертильність пилкових зерен в обох деревних порід, але більшою мірою-у T. cordаta. Запропоновано інформативні тест-параметри для фітоіндикації забруднення навколишнього середовища та стану рослин роду Tіlia в умовах хронічної дії на них SO 2 , NO 2 та важких металів.

Assessment of Floral Organs State of <i>Tilia</i> Genus Representatives under Environment Pollution Conditions Caused by Emissions of Prydniprovska Thermal Power Plant, Dnipropetrovsk City

“…For T. europaea the difference of this parameter in trees in the test and reference zones is statistically insignificant at P <0.05 (see Table. 2). Other researchers also noted the rise of pollen sterility under conditions of anthropogenic impact [6,24].…”

“…[2][3][4]. Therefore, the creation of green areas using trees plays a significant role in optimizing the urban environment with high levels of man-made pollution [5,6]. It is worth considering, that the plants, carrying out the clearing function, are exposed to the negative impact of harmful substances, resulting in the inhibition process of their growth and development [2,[7][8][9][10][11][12][13][14].…”

“…It is worth considering, that the plants, carrying out the clearing function, are exposed to the negative impact of harmful substances, resulting in the inhibition process of their growth and development [2,[7][8][9][10][11][12][13][14]. Therefore, when range of species for landscaping industrialized cities is selected, it is necessary to consider the ability of plants to absorb harmful compounds, maintain their aesthetic quality in terms of environmental pollution, as well as their tolerance to anthropogenic emissions [6,15,16].…”

“…However, the widespread use of green space, involving Tilia trees, its organizing and farming requires deep knowledge of their botanical, biological and environmental features. In particular, it is important to consider the species resistance in specific environmental conditions [6,16]. The previous research was devoted to the study of some growth indicators Tilia representatives in conditions of an industrial city in the southeast of Ukraine.…”

“…The previous research was devoted to the study of some growth indicators Tilia representatives in conditions of an industrial city in the southeast of Ukraine. There is evidence of the impact of emissions from motor vehicles on the assimilation system of Tilia genus [19,20], its seed productivity [21], the parameters of anatomical stem structure under conditions of polluting the environment with emissions of the TPP [22], the state of the reproductive organs under the complex contamination with the emissions of metallurgical industry and petrol fumes [6]. However, there is little research in the generative system sensitivity of different species of Tilia genus to TPP emissions in terms of the steppe Prydniprovya.…”