朝鲜特有莎草短叶草的染色体数目

IF 0.8 Q4 PLANT SCIENCES KOREAN JOURNAL OF PLANT TAXONOMY Pub Date : 2023-06-30 DOI:10.11110/kjpt.2023.53.2.166
Kyong-Sook Chung, G. Nam, G. Chung
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引用次数: 0

摘要

短萼草(苏科)是特有的朝鲜和特点是收缩瘦果,短的侧穗,和芒雄蕊和雌蕊鳞片。在Mitratae节分类的种遍及韩国,在半阴影条件下多年生在山和/或岩坡上。本研究对该物种的减数分裂染色体进行了检测,在7个种群中发现33个减数分裂细胞长度小于2 μm,染色体非缩窄(n = 34II)。稳定的染色体数目可能与狭窄的地理分布和/或不同的瘦果形态有关。对其分布、形态特征变异和染色体特征等方面的研究,应与相近的分类群进行进一步的研究,以了解该物种的起源及其在韩国的特有分布。
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Chromosome number of Carex brevispicula (Cyperaceae), a sedge endemic to Korea
Carex brevispicula (Cyperaceae) is endemic to Korea and is characterized by constricted achenes, short lateral spikes, and awned staminate and pistillate scales. The species classified in sect. Mitratae occurs throughout South Korea, perennating on mountains and/or rocky slopes under half shadow conditions. Meiotic chromosomes of the species were examined in this study, in which 33 meiotic cells from seven populations were found to be less than 2 μm long with non-constricted chromosomes (n = 34II). The stable chromosome number may be related to the narrow geographical distribution and/or distinct achene morphology. Further investigations of the distribution, morphological character variation, and chromosome characteristics should be conducted with closely related taxa to understand the derivation of the species and its endemism in Korea.
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来源期刊
KOREAN JOURNAL OF PLANT TAXONOMY
KOREAN JOURNAL OF PLANT TAXONOMY Agricultural and Biological Sciences-Plant Science
CiteScore
1.50
自引率
40.00%
发文量
23
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