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首页> 外文期刊>African Journal of Agricultural Research >Evaluation of cassava hybrids performance obtained by controlled pollination of elite accessions from Niari landscape in the Republic of Congo
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Evaluation of cassava hybrids performance obtained by controlled pollination of elite accessions from Niari landscape in the Republic of Congo

机译：通过受控授粉刚果共和国尼亚里景观的优良种质获得的木薯杂种性能评估

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Cassava is the main crop in the Congo but its low yield doesn’t meet the needs of Congolese populations. The low yield is due to the use of less effective sensitive varieties to diseases, non-mastering of techniques and biotic constraint of which the African cassava mosaic. This study aims at selecting resistant genotypes to the African cassava mosaic and assessing their agronomic and production performances. Six elite accessions selected based on a villager participative approach have been crossed by controlled pollination with three clones (192/0401, 192/0325 and 197/0162) distributed by the International Institute for Tropical Agriculture (IITA). Growth, agronomic and production parameters of genotypes from the controlled pollination were evaluated at the station. Of the ten tested genotypes, the one resulting from the crossing (Mahabama x I92/0401) did not show any symptom of the cassava mosaic disease 12 months after planting. Apart from the root length, foliar surface and the height of the plant, this genotype differed from the others only by the biomass, the diameter of the stem, the harvest index, the rate of starch, the rate of dry matter and marketable or non-marketable tuberous roots. The genotype (Mahabama x I92/0401) will be included in the cassava improvement section plan in the Republic of Congo.
机译：木薯是刚果的主要农作物，但单产低并不能满足刚果人的需求。产量低是由于对疾病使用的敏感性较差的品种，对非洲木薯花叶病的非熟练掌握技术和生物限制。这项研究旨在选择对非洲木薯花叶病的抗性基因型，并评估其农艺学和生产性能。基于村民参与方式选择的六种优良种质已通过国际热带农业研究所（IITA）分发的三个无性系（192 / 0401、192 / 0325和197/0162）进行了授粉杂交。在该站评估了来自受控授粉的基因型的生长，农艺和生产参数。在测试的十种基因型中，杂交产生的一种（Mahabama x I92 / 0401）在种植后12个月没有表现出木薯花叶病的任何症状。除了根的长度，叶面和植物的高度以外，该基因型与其他基因型的区别仅在于生物量，茎的直径，收获指数，淀粉的比率，干物质的比率以及可出售或不可出售的适销的块茎根。基因型（Mahabama x I92 / 0401）将包括在刚果共和国的木薯改良部分计划中。

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