Mbanjo Edwige Gaby Nkouaya, Rabbi Ismail Yusuf, Ferguson Morag Elizabeth, Kayondo Siraj Ismail, Eng Ng Hwa, Tripathi Leena, Kulakow Peter, Egesi Chiedozie
International Institute of Tropical Agriculture, Ibadan, Nigeria.
International Institute of Tropical Agriculture, Nairobi, Kenya.
Front Genet. 2021 Jan 21;11:623736. doi: 10.3389/fgene.2020.623736. eCollection 2020.
Cassava is crucial for food security of millions of people in sub-Saharan Africa. The crop has great potential to contribute to African development and is increasing its income-earning potential for small-scale farmers and related value chains on the continent. Therefore, it is critical to increase cassava production, as well as its quality attributes. Technological innovations offer great potential to drive this envisioned change. This paper highlights genomic tools and resources available in cassava. The paper also provides a glimpse of how these resources have been used to screen and understand the pattern of cassava genetic diversity on the continent. Here, we reviewed the approaches currently used for phenotyping cassava traits, highlighting the methodologies used to link genotypic and phenotypic information, dissect the genetics architecture of key cassava traits, and identify quantitative trait loci/markers significantly associated with those traits. Additionally, we examined how knowledge acquired is utilized to contribute to crop improvement. We explored major approaches applied in the field of molecular breeding for cassava, their promises, and limitations. We also examined the role of national agricultural research systems as key partners for sustainable cassava production.
木薯对数百万撒哈拉以南非洲人的粮食安全至关重要。这种作物对非洲发展具有巨大潜力,并且正在提高非洲大陆小规模农户及相关价值链的创收潜力。因此,提高木薯产量及其品质特性至关重要。技术创新为推动这一预想中的变革提供了巨大潜力。本文重点介绍了木薯可用的基因组工具和资源。本文还简要介绍了如何利用这些资源来筛选和了解非洲大陆木薯遗传多样性的模式。在此,我们回顾了目前用于木薯性状表型分析的方法,重点介绍了用于关联基因型和表型信息、剖析关键木薯性状的遗传结构以及鉴定与这些性状显著相关的数量性状位点/标记的方法。此外,我们研究了所获得的知识是如何用于促进作物改良的。我们探讨了木薯分子育种领域应用的主要方法、它们的前景及局限性。我们还研究了国家农业研究系统作为木薯可持续生产关键合作伙伴的作用。