Ontogenetic Structure of Populations of Phlomis nubilans (Lamiaceae) in Uzbekistan Under Drought Climate

A. Akhmedov, Natalya Beshko, Xudoyor Keldiyorov, Zebo Umurzakova, Murtoza Hasanov, S. Atayeva, Zebo Rasulova, Nematov Shokhzod, Sherkulov Maruf, Numonjon Jumayev
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Abstract

Abstract The current study presents data on the structure of populations of an endemic species Phlomis nubilans Zakirov under a drought climate. The rare species P. nubilans belongs to the respective endemic genus of Uzbekistan. We studied the ontogenetic structure of populations, and the current state of P. nubilans populations was estimated based on a set of climate factors. The study focused on the ontogenetic structure of two populations of P. nubilans, revealing that the examined populations grew under drought conditions. The ontogenetic structure was incomplete, that is, it did not include all age groups. Their ontogenetic spectrum was centered and coincided with the characteristic spectrum. The research determined that the ontogenetic type was mature. The studied populations do have not any young plants (juvenile, immature, virginal) due to extreme drought conditions and various factors of elimination, including irregular seed propagation.
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干旱气候条件下乌兹别克斯坦 Phlomis nubilans(唇形科)种群的个体发育结构
摘要 目前的研究提供了干旱气候下特有物种 Phlomis nubilans Zakirov 种群结构的数据。稀有物种 P. nubilans 属于乌兹别克斯坦的特有属。我们研究了种群的个体发育结构,并根据一系列气候因素估计了 P. nubilans 种群的现状。研究重点是两个努比兰牛肝菌种群的个体发育结构,结果表明所考察的种群是在干旱条件下生长的。其本体结构不完整,即不包括所有年龄组。它们的个体发育谱居中,并与特征谱相吻合。研究结果表明,它们的个体发育类型是成熟型。由于极端干旱条件和各种淘汰因素,包括种子繁殖不规范,所研究的种群没有任何幼苗(幼苗、未成熟苗、处女苗)。
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