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首页> 外文期刊>Genetic Resources and Crop Evolution >Manihot fortalezensis Nassar, Ribeiro, Bomfim et Gomes a new species of Manihot from Ceara, Brazil
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Manihot fortalezensis Nassar, Ribeiro, Bomfim et Gomes a new species of Manihot from Ceara, Brazil

机译：Manihot fortalezaesensis Nassar，Ribeiro，Bomfim et Gomes来自巴西塞阿拉的Manihot的新种

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摘要

A new species of Manihot has been collected from Fortaleza, Ceara state, Brazil. It was grown at the living collection in the experimental station, University of Brasilia since 1980 and left for natural reproduction. It bred true during all these years giving rise to identical typical plants of the ancestor one. The closest species to it is M. glaziovii. Apparently this new species was formed by sporadic hybridization between M. glaziovii and cassava itself in its natural habitat, Ceara. It possesses morphological marker gene of the latter one which is ribbed fruit that is found only in cassava. Interspecific hybrids produced experimentally between M. glaziovii and cassava showed similar morphological markers. Exam of its ovules revealed formation of multiple embryos, an indicator of apomixis. Grafting it with common cassava was compatible, giving increased root size up to seven times.
机译：从巴西塞阿拉州福塔莱萨（Fortaleza）收集了一种新的Manihot物种。自1980年起，它就在巴西利亚大学实验站的活体收藏中生长，并留给自然繁殖。在所有这些年中，它的繁殖都是正确的，从而产生了与祖先相同的典型植物。与它最接近的物种是M. glaziovii。显然，这种新物种是由M. glaziovii和木薯本身在其自然栖息地Ceara中的零星杂交形成的。它具有后一种的形态标记基因，该基因是仅在木薯中发现的带肋果实。实验证明，在格拉茨莫氏酵母和木薯之间产生的种间杂种表现出相似的形态学标记。其胚珠的检查显示了多个胚的形成，这是无融合生殖的指示。用普通木薯嫁接它是兼容的，使根大小增加了七倍。

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