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首页> 外文期刊>Genetic Resources and Crop Evolution >Genetic diversity in AA and CC genome Oryza species in southern South Asia.
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Genetic diversity in AA and CC genome Oryza species in southern South Asia.

机译：南亚南部AA和CC基因组Oryza物种的遗传多样性。

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摘要

The CC genome of Oryza is found in nine species of Oryza that are distributed on all continents having a tropical climate. Three diploid Oryza species with CC genome are found in Africa and Asia to Papua New Guinea. In southern South Asia these three CC genome diploid species can be found, O. eichingeri and O. rhizomatis in Sri Lanka and O. officinalis in India. AA genome wild relatives of rice are also found in the same geographic region. Germplasm of both diploid CC and AA genome Oryza germplasm has recently been collected from Sri Lanka. AFLP analysis was used to compare the genetic diversity of the two Oryza genomes from a similar geographic region in southern South Asia. In addition, the diploid CC Oryza germplasm was also analysed by RAPD and SSR methodologies and the combined results were analysed. The results show that in southern South Asia the diploid CC genome species have a high level of genetic diversity compared to the diploid AA genome species. Molecular marker analysis revealed that populations of O. rhizomatis from northern and southeastern Sri Lanka are genetically differentiated. One accession of O. rhizomatis was aligned with O. eichingeri. This accession was collected from the site of O. rhizomatis that is the closest to a population of O. eichingeri. O. eichingeri showed lower genetic diversity than the other two diploid Oryza CC genome species. O. officinalis accessions from Assam, India, and China were genetically less diverged from O. eichingeri and O. rhizomatis than two accessions of O. officinalis from Kerala state, India..
机译：Oryza的CC基因组存在于9种Oryza物种中，分布在所有热带气候的大陆上。在非洲和亚洲至巴布亚新几内亚发现了三种具有CC基因组的二倍体稻。在南亚南部，可以找到这三种CC基因组二倍体物种，斯里兰卡的O. eichingeri和R. rhizomatis，印度的O. officinalis。水稻的AA基因组野生近缘种也在同一地理区域中发现。最近从斯里兰卡收集了二倍体CC和AA基因组Oryza种质的种质。 AFLP分析用于比较南亚南部相似地理区域的两个Oryza基因组的遗传多样性。此外，还通过RAPD和SSR方法对二倍体CC Oryza种质进行了分析，并对合并结果进行了分析。结果表明，在南亚南部，与二倍体AA基因组物种相比，二倍体CC基因组物种具有较高的遗传多样性。分子标记分析显示，斯里兰卡北部和东南部的根瘤菌种群具有遗传差异。一株根瘤菌与eichingeri对齐。该种质是从最接近艾辛格氏菌种群的米曲霉位置收集的。 O. eichingeri的遗传多样性低于其他两个二倍体Oryza CC基因组物种。来自印度阿萨姆邦和中国的O. officinalis遗传上与来自印度喀拉拉邦的两个O. officinalis相比，来自O. eichingeri和R. rhizomatis的遗传差异较小。

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