辣椒品种富gc组成异染色质核型多态性研究

IF 1.5 4区农林科学 Q2 Agricultural and Biological Sciences

Crop Breeding and Applied Biotechnology Pub Date : 2022-01-01 DOI:10.1590/1984-70332022v22n1a03

Breno Machado de Almeida, L. Martins, Â. C. D. A. Lopes, R. L. F. Gomes, S. Valente, A. Peron, V. B. Silva, L. Feitoza

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引用次数: 0

摘要

辣椒以辣椒和甜椒为代表，是一个具有显著遗传变异的类群。采用CMA3和DAPI特异性荧光染料对巴西不同栽培辣椒进行了评价。高GC-rich的CMA异色条带多态性较高，从6个(bagc114;C. annuum)至26块(bagc81;c . baccatum)。异染色质百分比从3.14% (BAGC 114;C. annuum)至8.72% (bagc81;C. bacaccatum)，证实了异色带数量的变化，特别是分布在染色体末端和亚末端区域的异色带。本文报道的信息支持了Piauí联邦大学辣椒种质资源库(BAGC-UFPI)中驯化辣椒的细胞遗传学特征。此外，这些数据有助于更好地了解辣椒的核型特征，并为辣椒遗传育种计划的改进和维护提供额外的信息。

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Karyotype polymorphism of GC-rich constitutive heterochromatin in Capsicum L. pepper accessions

Capsicum is represented by peppers and sweet peppers and comprises a group with remarkable genetic variability. Different cultivated Capsicum peppers of Brazil were evaluated by using CMA3 and DAPI specific fluorochromes. There was high polymorphism of highly GC-rich CMA heterochromatic bands among the analyzed species, ranging from six (BAGC 114; C. annuum) to 26 blocks (BAGC 81; C. baccatum). Heterochromatin percentage ranged from 3.14% (BAGC 114; C. annuum) to 8.72% (BAGC 81; C. baccatum), corroborating the variation in the number of heterochromatic bands, particularly those distributed in the terminal and subterminal regions of the chromosomes. The information reported in this paper supports the cytogenetic characterization of the domesticated peppers accessions belonging to the Capsicum Germplasm Active Bank of the Federal University of Piauí (BAGC-UFPI). Moreover, the present data helped to better understand the karyotype features of peppers and provide additional information that could contribute to the improvement and maintenance of Capsicum genetic breeding programs.

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来源期刊

Crop Breeding and Applied Biotechnology 农林科学-农艺学

CiteScore

2.40

自引率

13.30%

发文量

审稿时长

6-12 weeks

期刊介绍： The CBAB – CROP BREEDING AND APPLIED BIOTECHNOLOGY (ISSN 1984-7033) – is the official quarterly journal of the Brazilian Society of Plant Breeding, abbreviated CROP BREED APPL BIOTECHNOL. It publishes original scientific articles, which contribute to the scientific and technological development of plant breeding and agriculture. Articles should be to do with basic and applied research on improvement of perennial and annual plants, within the fields of genetics, conservation of germplasm, biotechnology, genomics, cytogenetics, experimental statistics, seeds, food quality, biotic and abiotic stress, and correlated areas. The article must be unpublished. Simultaneous submitting to another periodical is ruled out. Authors are held solely responsible for the opinions and ideas expressed, which do not necessarily reflect the view of the Editorial board. However, the Editorial board reserves the right to suggest or ask for any modifications required. The journal adopts the Ithenticate software for identification of plagiarism. Complete or partial reproduction of articles is permitted, provided the source is cited. All content of the journal, except where identified, is licensed under a Creative Commons attribution-type BY. All articles are published free of charge. This is an open access journal.