Genetic Enhancement of Early and Extra-Early Maturing Maize for Tolerance to Low-Soil Nitrogen in Sub-Saharan Africa-Crop Breeding, Genetics and Genomics-CSCIED科技核心评价数据库-手机版

Genetic Enhancement of Early and Extra-Early Maturing Maize for Tolerance to Low-Soil Nitrogen in Sub-Saharan Africa

Genetic Enhancement of Early and Extra-Early Maturing Maize for Tolerance to Low-Soil Nitrogen in Sub-Saharan Africa

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DOI	10.20900/cbgg20230001
刊名	Crop Breeding, Genetics and Genomics CBGG
年，卷(期)	2023, 5(1)
作者	Baffour Badu-Apraku*,Morakinyo A.B. Fakorede,Benjamin Annor,Gloria B. Adu,Ebenezer Obeng-Bio,Pearl Abu,Olatunde A. Bhadmus,Charles Nelimor,
作者单位	1 International Institute of Tropical Agriculture (IITA), PMB 5320, Ibadan 200001, Nigeria; 2 Obafemi Awolowo University, P.O. Box 2586, Ile-Ife, 220282, Nigeria; 3 Department of Crop and Soil Sciences, Kwame Nkrumah University of Science and Technology (KNUST), Kumasi, 00233, Ghana; 4 CSIR-Savanna Agricultural Research Institute (CSIR-SARI), P.O. Box TL 52, Tamale, 00233, Ghana; 5 Cocoa Research Institute of Ghana, (CRIG), P.O. Box 8, New Tafo-Akim, 00233, Ghana; 6 West Africa Centre for Crop Improvement, University of Ghana, Legon, 00233, Ghana; 7 Department of Cell Biology and Genetics, University of Lagos, 101017, Nigeria
Abstract	To increase and improve food crop production and crop management for sustainable agricultural development, the Maize Improvement Program (MIP) of the International Institute of Tropical Agriculture (IITA) has, in partnership with national and international organizations, focused attention on the genetic improvement of maize (Zea mays L.) for tolerance/resistance to abiotic and biotic stresses constraining maize grain production. One of the abiotic stresses into which new technologies have been established for crop protection and sustainable natural resource management is low soil nitrogen (N). Nitrogen, an important plant nutrient required for growth and productivity, is not readily available and little quantity or none is applied by farmers for maize production. Because of long periods of bush fallow, the absence of N was not noticeable at the initial stages of maize production in West and Central Africa (WCA). However, with the fallow period gradually reducing and totally disappearing, it has become imperative for external supply of N in maize production. Taking a cue from the International Maize and Wheat Improvement Centre (CIMMYT), IITA has been breeding low-N tolerant maize and several low-N-tolerant maize varieties and hybrids are now available to farmers. Reviewed in this manuscript are the efforts used to develop low-N tolerant early and extra-early maturing maize by the MIP of IITA. The review covers the objectives, methodology, and output of the research, including the genetics of tolerance, ongoing conventional and molecular approaches, and the gaps that new research could fill.
KeyWord	low soil nitrogen; tolerance; maize; genetic enhancement; Zea mays L
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Baffour Badu-Apraku*,Morakinyo A.B. Fakorede,Benjamin Annor,Gloria B. Adu,Ebenezer Obeng-Bio,Pearl Abu,Olatunde A. Bhadmus,Charles Nelimor. Genetic Enhancement of Early and Extra-Early Maturing Maize for Tolerance to Low-Soil Nitrogen in Sub-Saharan Africa, Crop Breeding, Genetics and Genomics. 2023; 5; (1). https://doi.org/10.20900/cbgg20230001.

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