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- W2345009968 abstract "Maize (Zea mays L.) is a preferred staple for 900 million consumers in the developing world, including 120–140 million poor farm families. The demand for maize is growing sharply due to its multifaceted uses (food, feed, fodder, specialty corn, and industrial uses). However, maize yields in the tropical rainfed environments, especially in sub-Saharan Africa (SSA) and South Asia, are affected by an array of abiotic and biotic stresses, thereby limiting national maize yields to 1–3 tons per hectare (t/ha), while the global average is around 5 t/ha. Therefore, developing and deploying high-yielding, climate-resilient maize (with tolerance to drought, heat, waterlogging, and biotic stresses), coupled with climate-smart agricultural practices, are critical for improving maize yields and reducing the high risk and vulnerability of the maize-growing smallholder farmers in the tropics to the climate variability. International Maize and Wheat Improvement Center (CIMMYT) has been intensively engaged since 1970s in breeding elite tropical maize germplasm with tolerance to important abiotic stresses, especially drought, using managed-stress screening and selection for key secondary traits. This formed the base for successful development, testing, and deployment of CIMMYT-derived abiotic stress-tolerant maize varieties in SSA, Latin America, and Asia, in partnership with an array of public and private sector institutions. Notable among the projects with strong focus on development and delivery of abiotic stress-tolerant tropical maize germplasm are the following: Drought Tolerant Maize for Africa (DTMA), Water Efficient Maize for Africa (WEMA), Improved Maize for African Soils (IMAS), and Heat Tolerant Maize for Asia (HTMA). Increasing genetic gains and breeding efficiency, especially in developing high-value abiotic stress-tolerant maize germplasm, requires: (a) carefully undertaken field-based phenotyping at several relevant sites as well as under technically demanding managed-stress screens; (b) better understanding of the genetic architecture of traits; and (c) utilization of modern breeding tools/strategies, including genome-wide association studies (GWAS), genomic selection, and doubled haploid (DH) technology for rapid development of improved products. Multi-institutional efforts, especially public–private alliances, are also key to ensure that the improved varieties effectively reach the farming communities vulnerable to climate change." @default.
- W2345009968 created "2016-06-24" @default.
- W2345009968 creator A5044631617 @default.
- W2345009968 date "2016-01-01" @default.
- W2345009968 modified "2023-09-27" @default.
- W2345009968 title "Developing and Deploying Abiotic Stress-Tolerant Maize Varieties in the Tropics: Challenges and Opportunities" @default.
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- W2345009968 doi "https://doi.org/10.1007/978-3-319-27090-6_3" @default.
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