000			03082naa a22003857a 4500
001			G81317
003			MX-TxCIM
005			20240919021207.0
008			220712s2004 at ||||| |||| 10| 0 eng d
020			_a1 920842 20 9
040			_aMX-TxCIM
041			_aeng
072		0	_aE16
072		0	_aF01
090			_aCIS-4343
100	1		_9862 _aZaidi, P.H. _gGlobal Maize Program _8INT2823
245	1	0	_aIncreasing crop-water productivity through genetic improvement for tolerance to water stresses in maize (Zea mays L.)
260			_aGosford (Australia) : _bThe Regional Institute, _c2004.
340			_aComputer File|Printed
520			_aInadequate water is a major cause of crop yield losses particularly in the tropics. Uncertainties in weather due to global warming are expected to increase the occurrence of inadequate water availability. At CIMMYT, various approaches to improved drought tolerance in maize have been explored. About three decades of work on drought tolerance in maize has resulted in improved source populations and open-pollinated and hybrid products that perform well under drought stress. Results from recent studies show the usefulness of this germplasm under severe drought stress conditions. Furthermore, the improvement for mid-season drought tolerance appears to impart tolerance to various other stresses, such as low-N fertility. Under ICAR-CIMMYT collaborative program, a large amount of maize germplasm, including inbred lines from CIMMYT and the national program, were screened for excess moisture/waterlogging tolerance in India. Many promising tolerant lines were identified and further improved for developing excess moisture tolerant cultivars for waterlogging prone areas in India. The secondary traits such as anthesissilking-interval (ASI), early and increased brace root development and high root porosity have been identified the traits associated with excess moisture tolerance in maize. Due to fairly high expression of the stress-adaptive traits under managed drought or excessive moisture stress conditions, they can be carefully selected and further improved. Since the maize is frequently exposed to both the extremes of water availability in many monsoonal areas in Asia, our major focus is to develop robust germplasm with improved performance across the regimes of water availability.
536			_aGlobal Maize Program
546			_aText in English
591			_a0503|AL-Maize Program
594			_aINT2823
650		7	_91082 _aDrought tolerance _2AGROVOC
650		7	_91173 _aMaize
650		7	_aPlant breeding _gAGROVOC _2 _91203
650		7	_92241 _aWaterlogging _2AGROVOC
650		7	_92912 _aNitrogen _2AGROVOC
700	1		_aSrinivasan, G. _96538
700	1		_aSingh, N.N. _92047
711	2		_94324 _aInternational Crop Science Congress _n(4th : _dSeptember 26 – October 1, 2004 : _cBrisbane, Australia)
773	0		_dGosford (Australia) : The Regional Institute, 2004. _tNew directions for a diverse planet: Proceedings of the 4th International Crop Science Congress _z1 920842 20 9
942			_cBP _2ddc _n0
999			_c45736 _d45736