Floristic diversity of threatened woodlands of Kazakhstan formed by Populus pruinosa Schrenk

Stikhareva, Tamara; Ivashchenko, Anna; Kirillov, Vitaliy; Rakhimzhanov, Alimzhan

doi:10.3906/tar-2006-70

Cited by 8 publications

(10 citation statements)

References 3 publications

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“…Eucalyptus can provide a large amount of wood for industrial production. Its leaves contain oil that can be used as an effective pesticide or herbicide component ( Hung et al, 2014 ; Dhakad et al, 2018 ; Stikhareva et al, 2021 ). Therefore, Eucalyptus polyploidization has good prospects and significance toward its breeding.…”

Section: Introductionmentioning

confidence: 99%

Induction and Characterization of Tetraploid Through Zygotic Chromosome Doubling in Eucalyptus urophylla

Liu

Wang²,

Qiu³

et al. 2022

Front. Plant Sci.

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Improvements in plant growth can bring great benefits to the forest industry. Eucalyptus urophylla is an important plantation species worldwide, and given that ploidy increases are often associated with plant phenotype changes, it was reasoned that its polyploidization may have good prospects and great significance toward its cultivation. In this study, the zygotic development period of E. urophylla was observed through paraffin sections, and a correlation between the development time of flower buds after pollination and the zygotic development period was established. On this basis, it was determined that the 25th day after pollination was the appropriate time for a high temperature to induce zygotic chromosome doubling. Then tetraploid E. urophylla was successfully obtained for the first time through zygotic chromosome doubling induced by high temperature, and the appropriate conditions were treating flower branches at 44°C for 6 h. The characterization of tetraploid E. urophylla was performed. Chromosome duplication brought about slower growing trees with thicker leaves, larger cells, higher net photosynthetic rates, and a higher content of certain secondary metabolites. Additionally, the molecular mechanisms for the variation in the tetraploid’s characteristics were studied. The qRT-PCR results showed that genes mediating the tetraploid characteristics showed the same change trend as those of the characteristics, which verified that tetraploid trait variation was mainly caused by gene expression changes. Furthermore, although the tetraploid had no growth advantage compared with the diploid, it can provide important germplasm resources for future breeding, especially for the creation of triploids.

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Section: Introductionmentioning

confidence: 99%

Induction and Characterization of Tetraploid Through Zygotic Chromosome Doubling in Eucalyptus urophylla

Liu

Wang²,

Qiu³

et al. 2022

Front. Plant Sci.

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“…The study of the floral composition of plant communities associated with Populus pruinosa revealed 98 species of higher plants from 82 genera and 32 families [24]. The first ten families include 64 species, which is 65.3% of their total number.…”

Section: Resultsmentioning

confidence: 99%

Assessment of the current status of the turanga forests in the south-east of Kazakhstan

Rakhimzhanov¹,

Ivashchenko²,

Kirillov³

et al. 2021

EJE

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Data reflecting the current state of Turanga forests in the South-East of Kazakhstan (within the Almaty region) is presented based on the analysis of forest management (as of 01.01.2020) and field surveys by authors in the period 2015-2020. It was found that stunted, understocked stands, which are mainly mature and over-mature in terms of age composition dominate. By the species composition of the stand is prevailed by pure plantings or with a slight admixture of Elaeagnus oxycarpa. Natural regeneration in the form of creeping-rooted specimens was observed only in some small areas, which characterizes the plantings as unstable. Rare, relict and endemic species of trees and shrubs are noted in the composition of the flora of the Turanga forests, their phytocoenotic indexes and practical significance are evaluated. Turanga woodlands need special protection, because these forests have a great environment-forming, soil-fixing, and reclamation value, i.e., they generally stabilize the ecological situation in the floodplains of rivers in arid regions. The main factors of anthropogenic impact on the Turanga forests of the region are shown: changes of the hydrological regime in the Ili River valley, recreation (increasing the road and path network, trampling the soil, setting up campfires), as well as grazing. Proposals are made to improve the protection of these relict forests and an analysis of ways to preserve individual floral elements based on clonal micropropagation methods is given.

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“…The Drude scale [Stikhareva et al, 2021] has six gradations: Soc. : plants grow close to each other, joining with their aboveground parts; Cop.…”

Section: Methodsmentioning

confidence: 99%

Determination of the Degradation Degree of Pasture Lands in the West Kazakhstan Region Based on Monitoring Using Geoinformation Technologies

Yesmagulova¹,

Assetova²,

Tassanova³

et al. 2023

J. Ecol. Eng.

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Land degradation, including pasture lands is one of the global problems. Currently, one of the most urgent problems of the West Kazakhstan region is the preservation and restoration of the vegetation cover of pasture lands. To date, large areas of the region have been occupied by agricultural land. Several main reasons negatively affect agriculture, one of which is land degradation associated with anthropogenic impact in terms of the irrationality of land use. Thus, to preserve the biodiversity of the pastures of the West Kazakhstan region, it is necessary to fully study the projective cover of the vegetation, determine the dominant plant species, and also monitor the condition of pastures to prevent land degradation on time by conducting land and forest improvement activities. The study aimed to carry out a phyto-ecological assessment of degraded pastures of the Karatobinsky district of the West Kazakhstan region using geoinformation technologies and field study results. The paper presents the results of desktop decoding of high-resolution satellite images and ecological profiling of the studied territories. Decoding features of landscape types allowed making a preliminary map of landscape contours. The use of this technique makes it possible to monitor the condition of degraded pasture lands in a short time and justify the organization of pastures with a regulated grazing system in the study area.

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Floristic diversity of threatened woodlands of Kazakhstan formed by Populus pruinosa Schrenk

Cited by 8 publications

References 3 publications

Induction and Characterization of Tetraploid Through Zygotic Chromosome Doubling in Eucalyptus urophylla

Induction and Characterization of Tetraploid Through Zygotic Chromosome Doubling in Eucalyptus urophylla

Assessment of the current status of the turanga forests in the south-east of Kazakhstan

Determination of the Degradation Degree of Pasture Lands in the West Kazakhstan Region Based on Monitoring Using Geoinformation Technologies

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