小茴香(Foeniculum vulgare Mill.)微核多态性诱导基因组不稳定的出现。

IF 1 4区生物学 Q3 PLANT SCIENCES

Indian Journal of Genetics and Plant Breeding Pub Date : 2022-04-25 DOI:10.31742/ijgpb.82.2.16

G. Kumar, M. Mishra, K. Tripathi, P. Ojha

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引用次数: 0

摘要

微核（MN）是包含受损染色体片段和完整染色体的核外体，这些染色体在细胞分裂后不会以其他方式结合到细胞核中。本实验研究了甲烷磺酸乙酯（EMS）对茴香花粉母细胞减数分裂行为的诱变作用。细胞学分析表明，三种浓度的EMS均能诱发微核。染色体异常的特殊相关性，主要是后期I和II的桥接和滞后与这种核多态性的基因组不稳定性。此外，还通过花粉肥力来检查花粉的活力。因此，MN的形成导致了基因组的不完全消除，这可以熟练地用作近亲繁殖程序的希望之光来产生添加和替换系。

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Emergence of micronuclei as polymorphism induced genomic instability in Fennel (Foeniculum vulgare Mill.).

Micronuclei (MN) are extra-nuclear bodies containing damaged chromosomal fragments as well as complete chromosomes that are not otherwise incorporated into the nucleus after cell division. The present experiment was conducted to assess mutagenic effects of ethyl methane sulphonate (EMS) on the meiotic behavior of pollen mother cells of fennel (Foeniculum vulgare Mill.). Cytological analysis revealed that micronuclei were incited at all the three concentrations of EMS. A peculiar correlation of chromosomal abnormalities, mainly bridge and laggard at anaphase I and II with this nuclear polymorphism were experienced for genomic instability. Pollen viability was additionally inspected through pollen fertility. Thus, the MN formations bring about incomplete elimination of the genome, which can be proficiently use as the light of hope inbreeding programmers to produce addition and substitution lines.

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来源期刊

Indian Journal of Genetics and Plant Breeding PLANT SCIENCES-

CiteScore

1.80

自引率

10.00%

发文量

审稿时长

6-12 weeks

期刊介绍： Advance the cause of genetics and plant breeding and to encourage and promote study and research in these disciplines in the service of agriculture; to disseminate the knowledge of genetics and plant breeding; provide facilities for association and conference among students of genetics and plant breeding and for encouragement of close relationship between them and those in the related sciences; advocate policies in the interest of the nation in the field of genetics and plant breeding, and facilitate international cooperation in the field of genetics and plant breeding.