Ethiopia's transforming wheat landscape: tracking variety use through DNA fingerprinting.
Ethiopia's transforming wheat landscape: tracking variety use through DNA fingerprinting.
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DOI：
10.1038/s41598-020-75181-8
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发表时间：
2020-10-28
影响因子：
4.6
通讯作者：
Erenstein O
中科院分区：
文献类型：
--
作者：
Hodson DP;Jaleta M;Tesfaye K;Yirga C;Beyene H;Kilian A;Carling J;Disasa T;Alemu SK;Daba T;Misganaw A;Negisho K;Alemayehu Y;Badebo A;Abeyo B;Erenstein O
埃塞俄比亚是撒哈拉以南非洲地区最大的小麦生产国，但仍是小麦净进口国。增加国内小麦产量是国家的首要任务。改良品种是提高产量和稳定生产的重要途径。可靠地跟踪品种使用和动态是一个挑战，传统的召回调查的价值越来越受到质疑。我们报告了在埃塞俄比亚进行的第一个具有全国代表性的大规模小麦DNA指纹研究。对2016/17季近4000个地块的DNA指纹图谱与农民回忆进行的地块水平比较表明，只有28%的农民正确命名了种植的小麦品种。DNA研究表明，新的抗锈病面包小麦品种现在被广泛采用。来自CGIAR中心的种质资源做出了重大贡献。相应的生产力提高和经济效益是可观的，这表明小麦改良方面的投资回报很高。这项研究提供了对小麦品种状况的准确评估，并为国家决策者和捐助者设定了一个基准。近几十年来，埃塞俄比亚小麦已经从当地的四倍体品种转变为广泛采用高产、抗锈病的面包小麦。我们证明了DNA指纹可以大规模应用，并可能改变未来的作物品种采用研究。
Ethiopia is the largest wheat producer in sub-Saharan Africa yet remains a net importer. Increasing domestic wheat production is a national priority. Improved varieties provide an important pathway to enhancing productivity and stability of production. Reliably tracking varietal use and dynamics is a challenge, and the value of conventional recall surveys is increasingly questioned. We report the first nationally representative, large-scale wheat DNA fingerprinting study undertaken in Ethiopia. Plot level comparison of DNA fingerprinting with farmer recall from nearly 4000 plots in the 2016/17 season indicates that only 28% of farmers correctly named wheat varieties grown. The DNA study reveals that new, rust resistant bread wheat varieties are now widely adopted. Germplasm originating from CGIAR centres has made a significant contribution. Corresponding productivity gains and economic benefits have been substantial, indicating high returns to investments in wheat improvement. The study provides an accurate assessment of wheat varietal status and sets a benchmark for national policy-makers and donors. In recent decades, the Ethiopian wheat landscape has transformed from local tetraploid varieties to widespread adoption of high yielding, rust resistant bread wheat. We demonstrate that DNA fingerprinting can be applied at scale and is likely to transform future crop varietal adoption studies.
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影响因子：
3.4
作者：
Floro, Victorino O.;Labarta, Ricardo A.;Ovalle, Tatiana M.
通讯作者：
Ovalle, Tatiana M.
影响因子：
2.7
作者：
Couch, Alan J.;Unmack, Peter J.;Lintermans, Mark
通讯作者：
Lintermans, Mark
影响因子：
64.8
作者：
JEFFREYS, AJ;WILSON, V;THEIN, SL
通讯作者：
THEIN, SL
DOI：
10.1080/20421338.2018.1550932
发表时间：
2019-01-02
影响因子：
1.2
作者：
Kalsa, Karta Kaske
通讯作者：
Kalsa, Karta Kaske
影响因子：
3.7
作者：
Elshire RJ;Glaubitz JC;Sun Q;Poland JA;Kawamoto K;Buckler ES;Mitchell SE
通讯作者：
Mitchell SE