000			02802nab|a22003617a|4500
999			_c62183 _d62175
001			62183
003			MX-TxCIM
005			20240919021228.0
008			200624s2020||||xxu|||p|op||||00||0|eng|d
022			_a2211-9124
024	8		_ahttps://doi.org/10.1016/j.gfs.2019.100324
040			_aMX-TxCIM
041			_aeng
100	1		_aSingh, R.P. _911731
245	1	0	_aVarietal replacement rate : _bprospects and challenges for global food security
260			_aUSA : _bElsevier, _c2020.
500			_aPeer review
520			_aThe greatest challenge to ensure global food security is sustained agriculture growth that not only helps in increased crop productivity but also caters the food and nutritional demand of burgeoning population. Development, deployment and diffusion of efficient technologies in terms of climate resilience, efficient resource utilization and high yielding varieties/hybrids are required to attain desired growth that ultimately alleviate poverty and vulnerability posed by climate change effects. Genetic enhancements made by crop improvement can be translated into higher productivity with deployment of newly developed varieties. Although new varieties are continuously being introduced into the seed chain but varietal scenario at times is dominated by few varieties having major percentage share in the total indented breeder seed/basic seed requirement. Almost in all the crops, some of the old varieties still occupy the prominent position by virtue of achieving mega variety status. Besides, various institutional, environmental, socio-economic and technical constraints are persisting, which impedes in up-scaling the varietal replacement rates in developing countries. To accelerate varietal replacement rate, several strategies such as pre-breeding, participatory plant breeding, maintenance breeding, quality seed systems and policy support are quintessential. Thus, in the review, challenges associated in hindering VRR and strategies to be deployed for increasing VRR have been illustrated. Adoption of these strategies could envisage higher varietal replacement rate and ultimately higher crop productivity among climate change.
546			_aText in English
650		7	_aBreeders seed _2AGROVOC _914462
650		7	_aClimate change _2AGROVOC _91045
650		7	_aGermplasm conservation _2AGROVOC _93805
650		7	_aParticipatory approaches _2AGROVOC _95775
650		7	_aPolicies _2AGROVOC _94809
650		7	_aPlant breeding _gAGROVOC _2 _91203
650		7	_aVarieties _gAGROVOC _2 _91303
700	1		_aChintagunta, A.D. _914463
700	1		_aAgarwal, D.K. _914464
700	1		_aKureel, R.S. _914465
700	1		_aJeevan Kumar, S.P. _914466
773	0		_gv. 25, art. 100324 _dUSA : Elsevier, 2020. _x2211-9124 _tGlobal Food Security
942			_cJA _n0 _2ddc