000			02226nam a22002537a 4500
999			_c59090 _d59082
001			59090
003			MX-TxCIM
005			20220920161649.0
008			180119s2017 - |||||r|||| 00| 0 eng d
040			_aMX-TxCIM
041			_aeng
100	1		_aSharma, R.K. _gFormerly Global Wheat Program _8INT3065 _9888
245	1	0	_aChapter 4. Improving wheat cultivation in Asia
260			_aUnited Kingdom : _bBurleigh Dodds Science Publishing Limited, _c2017.
520			_aWith annual production of about 315 million tonnes in Asia ( FAO, 2016 ), wheat is second only to rice in importance. Since the start of the 'Green Revolution' around 1970, wheat production has seen an average annual growth rate of over 3% ( Figure 1 ), whilst wheat yield has grown at an annual average rate of 2.1% ( FAO, 2016 ). However, yields vary signifi cantly between developed and developing countries. Lopes et al. (2012) studied 26 wheat genotypes released between 1977 and 2008 and estimated annual increases in yields of between 0.5% and 0.9% in Asia and Africa. Other recent estimates of genetic gain are less than or around 1% per annum ( Sharma et al., 2012 ; Manes et al., 2012 ). Wheat yield stagnation is currently being faced in everal parts of the world ( Knight et al., 2012 ). It has been estimated that wheat production in South Asia needs to grow at the rate of 2-2.5% annually until the middle of twenty-fi rst century to feed its population ( Chatrath et al., 2007 ). Singh et al. (2007) also reported that world wheat production needed to grow at 2% annually to meet future demands, half of which could come from breeding better varieties and half from improvements in cultivation techniques. China exemplifi es both the successes and the continuing challenges of improving wheat yields.
546			_aText in English
650		7	_aWheat _gAGROVOC _2 _91310
650		7	_aCultivation _gAGROVOC _2 _91071
650		7	_92232 _aGenetic improvement _2AGROVOC
651			_94026 _aAsia _2AGROVOC
773	0		_gv. 2, p. 1-26 _tAchieving sustainable cultivation of wheat: cultivation techniques _z1786760207, 9781786760203
856	4		_uhttp://libcatalog.cimmyt.org/Download/cis/59090.pdf _yAccess only for CIMMYT Staff
942			_2ddc _cBP