Cytogenetic studies of three cultivated hill cotton (Gossypium arboreum L.) varieties from Bangladesh

IF 1 4区 生物学 Q3 PLANT SCIENCES Indian Journal of Genetics and Plant Breeding Pub Date : 2021-03-25 DOI:10.31742/ijgpb.81.1.16
A. Hossain, C. Dash, Syeda Sharmeen Sultana
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Abstract

Three hill cotton (Gossypium arboreum L.) varieties viz., HC-1, HC-2 and HC-3, released by Bangladesh Cotton Development Board were investigated through orcein, CMAand DAPI-banding for cytogenetical characterization and to elucidate the karyotypic diversity among these varieties. All these three varieties were found to possess 2n = 26 metacentric chromosomes with ‘1A’ karyotype. Based on TF%, AsK% and Syi index, HC-3 was little advanced over HC-1 and HC-2. These three varieties showed differential Chromomycin A3 (CMA)- and 4Ê-6 Diamidino-2-Phenyl Indole (DAPI)-banding patterns and a tendency of acumulation of repetitive sequences at the terminal regions was observed. Despite possessing same somatic chromosome number these three hill cotton varieties could be characterized by diversified karyotypic parameters through differential staining.
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孟加拉国三个栽培山棉品种的细胞遗传学研究
采用orcein、CMA和DAPI条带对孟加拉国棉花发展委员会发布的三个山棉品种HC-1、HC-2和HC-3进行了细胞遗传学鉴定,并阐明了这些品种之间的核型多样性。三个品种均具有2n=26条中心染色体,核型为‘1A’。根据TF%、AsK%和Syi指数,HC-3比HC-1和HC-2进步不大。这三个品种表现出不同的色霉素A3(CMA)-和4指定-6二氨基-2-苯基吲哚(DAPI)-带型,并观察到在末端区域重复序列的激活趋势。尽管这三个山棉品种具有相同的体细胞染色体数目,但通过差异染色可以获得不同的核型参数。
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来源期刊
CiteScore
1.80
自引率
10.00%
发文量
0
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.
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