000			03506naa a22003857a 4500
001			G94565
003			MX-TxCIM
005			20220708181651.0
008			220708s2010 mx ||||| |||| 10| 0 eng d
020			_a978-979-1159-41-8
040			_aMX-TxCIM
041			_aeng
090			_aCIS-6130
100	1		_aGarg, A. _928068
245	1	0	_aGenetic analysis and mapping of QTLs for resistance to banded leaf and sheath blight (Rhizoctonia solani f. sp. sasakii) in maize
260			_aMexico, DF (Mexico) : _bCIMMYT, _c2010.
520			_aTo identify genetic variability for resistance to banded leaf and sheath blight (BLSB) in India, 29 selected inbred lines were evaluated under artificial inoculation at three disease hot spots (Udaipur, Pantnagar and New Delhi, India) during the kharif (monsoon) seasons of 2002-2004. The study indicated high vulnerability of the maize lines to the BLSB isolates; only one inbred line (CA00106) offered moderate resistance to BLSB at all three locations, while some (eg, CM104 and LM6) showed moderate resistance at specific locations. To analyze the genetic basis of resistance to BLSB, a half-diallel set was generated using nine inbred lines (CA00106, CA00310, CM104, CM105, CM300, CM139, CM140, LM5 and LM6) differing in their responses to BLSB. Evaluation of this set at Delhi, Pantnagar and Udaipur revealed larger SCA effects as compared to GCA effects, and a significant contribution of nonadditive gene action. The combining ability analyses indicated that BLSB resistance was both generally and specifically transferable among crosses. An F2:3 mapping population comprising 193 individuals was generated using CA00106 as the resistant parent and CM140 as the susceptible parent. Genotyping of this mapping population was undertaken using 127 polymorphic SSR (single sequence repeat) markers covering the maize genome. Linkage mapping was performed with the MULTIPOINT software using genotypic data from 108 SSR markers. The map had a total length of 2001.3 cM, with an average marker interval of 19.53 cM. Phenotyping of 192 F3 families, along with the parental lines, was undertaken in 2005 at the three locations. Quantitative Trait Loci (QTL) mapping using QTL Cartographer revealed location-specific QTLs for BLSB resistance, with most of the favorable QTL alleles contributed by the resistant parent CA00106. Analysis using QTL Network V2.0 led to the identification of three QTLs (on chr. 6, 8 and 9) with significant epistatic interactions.
536			_aGenetic Resources Program|Global Maize Program
546			_aText in English
594			_aINT1617|INT3057
650		7	_aMaize _2AGROVOC _91173
650		7	_aBlight _2AGROVOC _95348
650		7	_aDisease resistance _2AGROVOC _91077
650		7	_aGenetic variation _2AGROVOC _91129
650		7	_aChromosome mapping _2AGROVOC _92084
700	1		_aPrasanna, B.M. _gGlobal Maize Program _8INT3057 _9887
700	1		_aSharma, R.C. _93576
700	1		_aRathore, R.S. _94519
700	1		_aSaxena, S.C. _928069
700	1		_aShanker Rao, H. _928070
700	1		_9832 _aPixley, K.V. _gGenetic Resources Program _8INT1617
711	2		_96553 _aAsian Regional Maize Workshop _n(10th : _dOctober 20-23, 2008 : _cMakassar, Indonesia)
773	0		_dMexico : CIMMYT, 2010. _gp. 211-214 _tAsian Regional Maize Workshop, 10. Maize for Asia - Emerging Trends and Technologies; Proceedings of The Asian Regional Maize Workshop; Makassar (Indonesia); 20-23 Oct. 2008 _wG94189 _z978-979-1159-41-8
942			_cBP _2ddc _n0
999			_c7984 _d7984