Oryza longistaminata is the only AA-genome Oryza species that is perennial via rhizome production. This undomesticated rice species, which is native to Africa, is hypothesized to be a good candidate for expanding the cultivated rice gene pool. However, its phylogenetic relationships with other Oryza members are still unresolved, and it is underutilized as a genetic resource in the breeding of cultivated rice (Oryza sativa L.). This study therefore genotyped 361 O. longistaminata, 35 cultivated rice, 1 Japonica weedy-type, 25 AA genome and 8 CC genome wild rice accessions by using 67 SSR markers. Genotypic grouping confirmed the distinctness of O. longistaminata from other rice accessions and the sub-differentiation of this population influenced by eco-geographical conditions. The higher genetic diversity within the O. longistaminata population also implies its candidacy as a donor of diverse traits of interest.

中文翻译：

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埃塞俄比亚 longistaminata 种群与其他 AA 基因组水稻物种之间的遗传相关性

Oryza longistaminata 是唯一通过根茎生产多年生的 AA 基因组稻种。这种原产于非洲的未驯化水稻品种被认为是扩大栽培水稻基因库的良好候选者。然而，它与其他水稻成员的系统发育关系仍未得到解决，并且它作为栽培稻（Oryza sativa L.）育种中的遗传资源未被充分利用。因此，本研究使用 67 个 SSR 标记对 361 O. longistaminata、35 个栽培稻、1 个粳稻杂草型、25 个 AA 基因组和 8 个 CC 基因组野生稻种质进行基因分型。基因型分组证实了 O. longistaminata 与其他水稻种质的独特性以及该种群受生态地理条件影响的亚分化。O 内较高的遗传多样性。