普通蒲公英(taraxacum officinale wigg)在入侵高原人为干扰区期间的一些特征变化

IF 0.8 Q4 ECOLOGY

Russian Journal of Biological Invasions Pub Date : 2023-06-14 DOI:10.35885/1996-1499-16-2-151-162

N. Reutova, M. Mallaeva, F. Dreeva, T. Reutova, P. Dzhambetova

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引用次数: 0

摘要

研究了生长在海拔200、600、1300、2050、2700和3050 m(高加索地区)的植物种子的染色体数、株高、单株花序数、单花序种子数、种子重、萌发率和萌发能。这些研究分别于2013年、2014年和2018年在相同的采样点进行。用细胞遗传学方法测定染色体计数。在高原人为干扰地区，高倍体个体在种群中占主导地位。多倍体植株比它们的低倍体植株更大，但在高海拔地区，选择的目的是保留较小的表型。多倍体种子质量性状的增加是自然选择和高原条件的结果。发芽和萌发能不随海拔的升高而变化。

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HANGES IN A NUMBER OF CHARACTERISTICS OF COMMON DANDELION (TARAXACUM OFFICINALE WIGG) DURING INVASION INTO ANTROPOGENICALLY DISTURBED AREAS OF THE HIGHLANDS

Chromosome count, plant height, number of inflorescences per plant, number of seeds per inflorescence, seed weight, germination and germination energy of plant seeds growing at altitudes of 200, 600, 1300, 2050, 2700 and 3050 m above sea level (Central Caucasus) were studied. The studies were conducted in 2013, 2014 and 2018 at the same sampling points. Chromosome counts were determined by cytogenetic method. In the T. officinale species, high ploid individuals predominate in populations when invading anthropogenically disturbed territories of the highlands. Polyploid plants are larger in size compared to their low ploid predecessors, but in high-altitude, selection is aimed at preserving smaller phenotypes. The increase in seed mass characteristic of polyploid plants was supported by natural selection and in conditions of highlands. Germination and germination energy did not change with the increase of altitude.

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来源期刊

Russian Journal of Biological Invasions ECOLOGY-

CiteScore

1.20

自引率

14.30%

发文量

期刊介绍： Russian Journal of Biological Invasions publishes original scientific papers dealing with biological invasions of alien species in both terrestrial and aquatic ecosystems and covers the following subjects:description of invasion process (theory, modeling, results of observations and experiments): invasion corridors, invasion vectors, invader species adaptations, vulnerability of aboriginal ecosystems;monitoring of invasion process (reports about findings of organisms out of the limits of natural range, propagule pressure assessment, settling dynamics, rates of naturalization);invasion risk assessment; genetic, evolutional, and ecological consequences of biological invasions of alien species; methods, means of hoarding, processing and presentation of applied research data (new developments, modeling, research results, databases) with factual and geoinformation system applications;use of the results of biological invasion research (methods and new basic results) under the study of marine, fresh-water and terrestrial species, populations, communities and ecosystems; control, rational use and eradication of the harmful alien species..