000			03116nab a22004217a 4500
001			G89959
003			MX-TxCIM
005			20240919021147.0
008			210920s2007 xxk|||p|op||| 00| 0 eng d
022	0		_a0021-8596
022	0		_a1469-5146 (Online)
024	8		_ahttps://doi.org/10.1017/S0021859607007009
040			_aMX-TxCIM
041	0		_aeng
090			_aCIS-5030
100	1		_aBrennan, J.P. _9448
245	1	3	_aAn economic assessment of the use of physiological selection for stomatal aperture-related traits in the CIMMYT wheat breeding programme
260			_aUnited Kingdom : _bCambridge University Press, _c2007.
340			_aComputer File|Printed
500			_aPaper presented at International Workshop on Increasing Wheat Yield Potential, CIMMYT, Obregon, Mexico, 20-24 March 2006.
520			_aPhysiological research has shown that measurements on small plots of stomatal conductance, canopy temperature depression (CTD) or carbon isotope discrimination may be useful for screening breeding populations for yield potential, prior to the execution of expensive replicated yield trials. Such indirect selection criteria may be very effective as lower cost alternatives for estimating genetic gain for complex characteristics such as yield that are relatively expensive to measure accurately in the field. In the present paper, economic analysis is undertaken of the results of trials conducted at the International Maize and Wheat Improvement Center (CIMMYT) over three seasons to determine the value of the physiological traits being assessed. The results indicate that the economic value of incorporating these measurements into CIMMYT’s breeding programme is potentially important. CTD and stomatal conductance are relatively cheap to measure and could be used to discard lines prior to extensive yield testing, whereas carbon isotope discrimination is relatively expensive and would not be economic for this purpose. The analysis indicates that the incorporation of physiological measurements is likely to provide important economic benefits to the programme. Indications are that other breeding programmes with similar breeding goals and comparable costing structures might also consider using such indirect selection traits.
536			_aGlobal Wheat Program|Socioeconomics Program
546			_aText in English
594			_aINT1511
650		7	_2AGROVOC _91310 _aWheat
650		7	_2AGROVOC _99142 _aResearch
650		7	_2AGROVOC _95648 _aAnalytical methods
650		7	_2AGROVOC _930986 _aYield potential
650		7	_2AGROVOC _98629 _aField Experimentation
650		7	_aPlant breeding _gAGROVOC _2 _91203
650		7	_2AGROVOC _91088 _aEconomic analysis
700	1		_aCondon, A.G. _94290
700	1		_997 _aGinkel, M. Van
700	1		_aReynolds, M.P. _gGlobal Wheat Program _8INT1511 _9831
773	0		_tJournal of Agricultural Science, Cambridge _n634784 _gv. 145, no. 3, p. 187-194 _dUnited Kingdom : Cambridge University Press, 2007. _wG444500 _x0021-8596
856	4		_yAccess only for CIMMYT Staff _uhttps://hdl.handle.net/20.500.12665/1521
942			_cJA _2ddc _n0
999			_c26756 _d26756