阿尔及利亚一些风信子科（Scilloideae）成员的核型不对称现象

IF 2.1 4区生物学 Q2 Agricultural and Biological Sciences

Caryologia Pub Date : 2024-02-29 DOI:10.36253/caryologia-2238

M. Nassar, Nora Sakhraoui, G. Domina

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引用次数: 0

摘要

本细胞遗传学研究试图揭示 Scilloideae 亚科物种的核形态学和不对称性数据，这些物种以前被归入 Scilla 科，即 Hyacinthoides lingulata (Poir.) Rothm.、Prospero autumnale (L.) Speta、Prospero obtusifolium (Poir.) Speta、Barnardia numidica (Poir.) Speta 和 Oncostema elongata (Parl.) Speta。这些分类群主要来自 Skikda 地区（阿尔及利亚东北部）。H. lingulata 的体细胞染色体数为 2n=2x=16，P. autumnale 为 2n=2x=14，P. obtusifolium 为 2n=2x=8，B. numidica 为 2n=2x=18，O. elongata 为 2n=2x=16。染色体内（MCA、A1 和 AsI）和染色体间（CVCL、CVCI 和 A2）不对称指数显示，H. lingulata 的核型最不对称（1C），而 P. autumnale 的核型最对称（3A）。P. obtusifolium 的核型相对对称（4A），而 B. numidica 和 O. elongata 的核型都不对称（1B）。这些发现与之前报告的阿尔及利亚相同分类群的结果不同，因此表明该国存在大量遗传变异。

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Karyotype asymmetry in some Scilloideae (Hyacinthaceae) members from Algeria

This cytogenetic study attempts to shed light on the karyomorphological and asymmetry data of species in the subfamily Scilloideae previously included in Scilla, namely Hyacinthoides lingulata (Poir.) Rothm., Prospero autumnale (L.) Speta, Prospero obtusifolium (Poir.) Speta, Barnardia numidica (Poir.) Speta, and Oncostema elongata (Parl.) Speta. These taxa are predominantly from the Skikda region (northeastern Algeria). H. lingulata had a somatic chromosome number 2n=2x=16, P. autumnale 2n=2x=14, P. obtusifolium 2n=2x= 8, B. numidica 2n=2x=18, and O. elongata 2n=2x=16. The indices of intrachromosomal (MCA, A1, and AsI) and interchromosomal (CVCL, CVCI, and A2) asymmetry revealed that H. lingulata has the most asymmetrical karyotype (1C), while P. autumnale has the most symmetrical karyotype (3A). P. obtusifolium has a relatively symmetrical karyotype (4A), while B. numidica and O. elongata have both an asymmetrical karyotype (1B). These findings differ from those previously reported for the same taxa in Algeria, hence indicating the substantial genetic variation that exists within the country.

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来源期刊

Caryologia 生物-遗传学

CiteScore

1.60

自引率

23.80%

发文量

审稿时长

12 months

期刊介绍： Caryologia is devoted to the publication of original papers, and occasionally of reviews, about plant, animal and human karyological, cytological, cytogenetic, embryological and ultrastructural studies. Articles about the structure, the organization and the biological events relating to DNA and chromatin organization in eukaryotic cells are considered. Caryologia has a strong tradition in plant and animal cytosystematics and in cytotoxicology. Bioinformatics articles may be considered, but only if they have an emphasis on the relationship between the nucleus and cytoplasm and/or the structural organization of the eukaryotic cell.