000			03267nab|a22004097a|4500
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003			MX-TxCIM
005			20240521163557.0
008			202203s2022||||xxu|||p|op||||00||0|eng|d
022			_a2211-9124
024	8		_ahttps://doi.org/10.1016/j.gfs.2021.100589
040			_aMX-TxCIM
041			_aeng
100	1		_aChivasa, W. _8001712096 _gGlobal Maize Program _919858
245	1	0	_aMaize varietal replacement in Eastern and Southern Africa : _bbottlenecks, drivers and strategies for improvement
260			_aUSA : _bElsevier, _c2022.
500			_aPeer review
500			_aOpen Access
520			_aSeed security is vital for food security. Rapid-cycle, climate-adaptive breeding programs and seed systems that deliver new, elite varieties to farmers to replace obsolete ones can greatly improve the productivity of maize-based cropping systems in sub-Saharan Africa (SSA). Despite the importance and benefits of accelerated varietal turnover to climate change adaptation and food security, the rate of maize varietal replacement in SSA is slow. This review outlines the major bottlenecks, drivers, risks, and benefits of active replacement of maize varieties in eastern and southern Africa (ESA) and highlights strategies that are critical to varietal turnover. Although there is an upsurge of new seed companies in ESA and introduction of new varieties with better genetics in the market, some established seed companies continue to sell old (over 15-year-old) varieties. Several recently developed maize hybrids in ESA have shown significant genetic gains under farmers’ conditions. Empirical evidence also shows that timely replacement of old products results in better business success as it helps seed companies maintain or improve market share and brand relevance. Therefore, proactive management of product life cycles by seed companies benefits both the farmers and businesses alike, contributing to improved food security and adaptation to the changing climate.
546			_aText in English
650		7	_aMaize _91173 _2AGROVOC
650		7	_aVarieties _91303 _2AGROVOC
650		7	_aGenetic gain _92091 _2AGROVOC
650		7	_aProducts _913992 _2AGROVOC
651		7	_2AGROVOC _91950 _aAfrica South of Sahara
700	1		_aRegasa, M.W. _gFormerly Global Maize Program _8INT3344 _9928
700	1		_aChere, A.T. _gGlobal Maize Program _8I1705938 _9791
700	1		_aSetimela, P.S. _gFormerly Global Maize Program _gFormerly Sustainable Intensification Program _gSustainable Agrifood Systems _8INT2636 _9846
700	1		_aGethi, J. _gGlobal Maize Program _8INT3343 _9927
700	1		_aMagorokosho, C. _gFormerly Global Maize Program _8INT2714 _9854
700	1		_aDavis, N. _gGlobal Maize Program _8I1705123 _9771
700	1		_aPrasanna, B.M. _gGlobal Maize Program _8INT3057 _9887
773	0		_tGlobal Food Security _gv. 32, art. 100589 _dUSA : Elsevier, 2022. _x2211-9124
856	4		_yOpen Access through DSpace _uhttps://hdl.handle.net/10883/21745
942			_cJA _n0 _2ddc
999			_c64612 _d64604