New reports of chromosome number and genome size in eight mangroves from coastal Orissa
New reports of chromosome number and genome size in eight mangroves from coastal Orissa
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DOI：
10.1080/00087114.2003.10589344
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发表时间：
2003-01
期刊：
影响因子：
2.1
通讯作者：
S. Jena;P. Sahoo;A. Das
中科院分区：
文献类型：
--
作者：
S. Jena;P. Sahoo;A. Das
摘要对印度奥里萨邦沿海Bhitarkanika红树林8株伴生红树进行了详细的核型分析和4C DNA数量及期间核体积（INV）的细胞光度测定。本文首次记录了carinatus （2n=22）、Lumnitzera racemosa （2n=24）、Tylophora tenuis （2n=24）、Sphaeranthus indicus （2n=30）、Cerbera manhas （2n=40）、Sesuvium portulacastrum （2n=48）、Syzygium cumini （2n=66）、hi芙蓉（2n=86）的体细胞染色体数目。核型分析揭示了不同种属体细胞染色体数量和结构的变化。4C DNA含量在不同种属间差异显著，从柽柳的5.31pg到山楂的27.83pg不等。不同科分类群的基因组大小从黄颡鱼的1301 Mbp到山核桃的6818 Mbp，差异约5倍。染色体长度、体积和INV呈极显著相关。方差分析证实了核DNA含量在种间和属间水平上的差异。
Abstract Detailed karyotype analysis and cytophotometric estimation of 4C DNA amount as well as inter-phase nuclear volume (INV) were carried out in eight mangrove associates found in Bhitarkanika mangrove forest of coastal Orissa, India. Somatic chromosome number of Sarcolobus carinatus (2n=22), Lumnitzera racemosa (2n=24), Tylophora tenuis (2n=24), Sphaeranthus indicus (2n=30), Cerbera manghas (2n=40), Sesuvium portulacastrum (2n=48), Syzygium cumini (2n=66), and Hibiscus tiliaceous (2n=86) were recorded for the first time. Karyotype analysis revealed numerical and structural alterations of somatic chromosomes in different species. Significant variations of 4C DNA content was noted among the species ranged from 5.31pg in T. tenuis to 27.83pg in C. manghas. Genome size varied about five fold among the taxon of different familiesfrom 1301 Mbp in T. tenuis to 6818 Mbp in C. manghas. Chromosome length, volume and INV showed significant correlation between them. ANOVA analysis confirmed the variation in nuclear DNA content in the interspecific as well as intergeneric level.