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The contribution of the CIAT genebank to the development of iron-biofortified bean varieties and well-being of farm households in Rwanda
Food Security ( IF 6.7 ) Pub Date : 2020-05-12 , DOI: 10.1007/s12571-020-01038-7
Stefania Sellitti , Kate Vaiknoras , Melinda Smale , Nelissa Jamora , Robert Andrade , Peter Wenzl , Ricardo Labarta

Genebanks play an essential role in a world where agricultural biodiversity has been lost from farming habitats, malnutrition persists as global population continues to rise, and farm productivity is vulnerable to climate change. We demonstrate the importance of the genebank of the International Center for Tropical Agriculture (CIAT) to the development of seven iron-biofortified varieties of climbing bean and the impact of their adoption on farm households in Rwanda. First, we link iron-biofortified varieties of climbing beans directly to the genebank through pedigree analysis and key informant interviews with the breeders who developed them. Second, we apply various econometric models to test the impact of adoption on yield, consumption, and purchase of beans by farming households in Rwanda, building upon previous research on bush beans. We based the analysis on a dataset of nearly 1400 households, collected in 2015 by HarvestPlus. We found that the scope of the genetic diversity housed in the bean collection at CIAT was fundamental to developing successful iron-biofortified beans. We found significant positive effects of climbing varieties on yields; however, we did not find significant effects on the amounts of beans consumed by households or bean purchases. Our results suggest that it is possible to trace the journey of an accession from its introduction in the genebank to its final use by farmers and consumers. Positive effects on yield generate incentives for adoption of iron-biofortified bean varieties, potentially boosting micronutrient consumption. Further research is needed to understand the factors affecting the adoption and impacts of climbing bean varieties.

中文翻译:

CIAT 基因库对开发铁生物强化豆品种和卢旺达农户福祉的贡献

在农业生境中农业生物多样性已经丧失、随着全球人口持续增加营养不良持续存在、农业生产力易受气候变化影响的世界中,基因库发挥着重要作用。我们展示了国际热带农业中心 (CIAT) 基因库对开发七种铁生物强化攀缘豆品种的重要性以及采用这些品种对卢旺达农户的影响。首先,我们通过系谱分析和与开发它们的育种者的关键线人访谈,将铁生物强化的攀缘豆品种直接与基因库联系起来。其次,我们应用各种计量经济学模型来测试采用对卢旺达农户产量、消费和购买豆类的影响,以先前对灌木豆的研究为基础。我们的分析基于 HarvestPlus 于 2015 年收集的近 1400 户家庭的数据集。我们发现 CIAT 豆类收藏中的遗传多样性范围是开发成功的铁生物强化豆类的基础。我们发现攀缘品种对产量有显着的积极影响;然而,我们没有发现对家庭消费的豆类数量或豆类购买量的显着影响。我们的结果表明,可以追踪一个种质从引入种质库到农民和消费者最终使用的过程。对产量的积极影响激发了采用铁生物强化豆类品种的动力,可能会促进微量营养素的消费。需要进一步研究以了解影响攀缘豆品种采用和影响的因素。
更新日期:2020-05-12
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