000			03185nab a22004457a 4500
001			G93417
003			MX-TxCIM
005			20230612172818.0
008			211109s2010 ne |||p|op||| 00| 0 eng d
022			_a1573-5060 (Online)
022	0		_a0014-2336
024	8		_ahttps://doi.org/10.1007/s10681-009-9993-5
040			_aMX-TxCIM
041			_aeng
090			_aCIS-5958
100	1		_9837 _aVivek, B. _gGlobal Maize Program _8INT2396
245	1	0	_aDiallel analysis of grain yield and resistance to seven diseases of 12 African maize (Zea mays L.) inbred lines
260			_aDordrecht (Netherlands) : _bSpringer, _c2010.
500			_aPeer-review: Yes - Open Access: Yes|http://science.thomsonreuters.com/cgi-bin/jrnlst/jlresults.cgi?PC=MASTER&ISSN=0014-2336
500			_aPeer review
520			_aMaize (Zea mays L.) is grown on 15 million ha in eastern and southern Africa. Several diseases are of common occurrence in the region and regularly result in significant yield losses. A collaborative regional disease nursery (REGNUR) project was initiated in 1998 to identify and increase access to disease resistant germplasm, generate and disseminate information on disease and insect resistance sources, and facilitate the development of resistant cultivars by project partners. A diallel among 12 elite inbred lines was formed with the specific objective of evaluating the combining ability of these inbred lines for grain yield and resistance to seven diseases. The trial was grown at six sites in 2001. Results showed that both general (GCA) and specific combining ability effects were significant for most diseases. On the average, GCA accounted for 69% of resistance to diseases and only 37% of variation for grain yield. Correlations between GCA effects for disease scores were generally non-significant, implying that it is possible to pyramid genes for disease resistance in inbred lines. This underscores the need for screening for resistance to prevailing diseases using artificial inoculation or reliable hot-spots. Based on GCA effects for grain yield and across diseases, P12 and P6 were the best inbred lines. The crosses P4 × P9 (6.7 t ha−1) and P4 × P12 (6.9 t ha−1) were the best hybrids in the earlier maturity group, while P3 × P9 (8.3 t ha−1) and P2 × P8 (7.4 t ha−1) were the best hybrids in the late maturity group.
536			_aGenetic Resources Program|Global Maize Program
546			_aText in English
591			_aSpringer
594			_aINT1617|INT2396
595			_aCSC
650		7	_aDisease resistance _2AGROVOC _91077
650		7	_aCombining ability _2AGROVOC _92367
650		7	_aDiallel analysis _2AGROVOC _94687
650	1	7	_aInbred lines _91155 _2AGROVOC
700	1		_aOdongo, O. _924860
700	1		_aNjuguna, J. _924861
700	1		_aImanywoha, J. _9129
700	1		_aBigirwa, G. _9436
700	1		_969 _aDiallo, A.
700	1		_9832 _aPixley, K.V. _gGenetic Resources Program _8INT1617
773	0		_tEuphytica _gv. 172, no. 3, p. 329-340 _dDordrecht (Netherlands) : Springer, 2010. _x0014-2336 _wG444298
856	4		_uhttps://hdl.handle.net/20.500.12665/939 _yAccess only for CIMMYT Staff
942			_cJA _2ddc _n0
999			_c27829 _d27829