减数分裂行为及其对 Arnebia euchroma (Royle ex Benth.) I.M.Johnst.(婆婆纳科），一种重要的外喜马拉雅药用植物

IF 2.1 4区生物学 Q2 Agricultural and Biological Sciences

Caryologia Pub Date : 2024-02-29 DOI:10.36253/caryologia-2154

I. I. Sofi, Shivali Verma, A. H. Ganie, Namrata Sharma, Manzoor A. Shah

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引用次数: 0

摘要

本研究报告了 Arnebia euchroma (Royle ex Benth.) I.M.Johnst. 的染色体数目、减数分裂行为及其与花粉受精率和结实率的关系。该物种的染色体数为 2n = 2x = 14。在目标植物物种的花粉母细胞（PMCs）中也观察到了减数分裂异常，如染色质粘稠、细胞混杂、滞后形成、染色体桥等。线性回归模型显示，随着减数分裂异常程度的增加，结实率会显著降低，而相关分析则突显了花粉活力与结实率之间的正相关关系。物种内部的减数分裂异常会阻碍其繁殖过程，导致繁殖效率下降。这项研究强调了在未来的保护计划中解决这些内在因素的重要性，以防止该物种在自然界中的数量下降。

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Meiotic behavior and its implications on the reproductive success of Arnebia euchroma (Royle ex Benth.) I.M.Johnst. (Boraginaceae), an important medicinal plant of Trans-Himalaya

The present study reports the chromosome number, meiotic behavior and its relation with pollen fertility and seed set of Arnebia euchroma (Royle ex Benth.) I.M.Johnst. The species shows a chromosome count of 2n = 2x = 14. The meiotic abnormalities such as chromatin stickiness, cytomixis, laggard formation, chromosomal bridges, were also observed in the Pollen Mother Cells (PMCs) of the target plant species. The linear model of regression showed a significant reduction of seed set with increasing meiotic abnormality and correlation analysis highlighted positive relationship between pollen viability and seed set. Meiotic abnormalities within the species hinder its reproductive process, causing a decline in reproductive efficiency. This study highlights the importance of addressing these intrinsic factors in future conservation programs to prevent a decline in the species population in nature.

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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.