000			03020nab|a22003257a|4500
999			_c59512 _d59504
001			59512
003			MX-TxCIM
005			20231018181309.0
008			180428s2018||||wiu|||p|op||||00||0|eng|d
024	8		_ahttps://doi.org/10.2134/agronj2017.04.0199
040			_aMX-TxCIM
041			_aeng
100	1		_aMusvosvi, C. _97492
245	1		_aContribution of secondary traits for high grain yield and stability of tropical maize germplasm across drought stress and non-stress conditions
260			_aMadison, WI: _bAmerican Society of Agronomy, _c2018.
500			_aPeer review
520			_aInformation is needed on the contribution of secondary traits to grain yield and stability in maize (Zea mays L.). This study aimed at identifying stable and high yielding hybrids as well as traits contributing to high yield and stability in tropical maize. Twenty-two test hybrids and six check hybrids were evaluated under five environments in Karnataka, India, using a 4 × 7 ?-lattice design with two replications. Genotype main effect plus genotype × environment interaction biplot model was used to ascertain genotype stability and yield across environments. Genotype × trait biplot, t test, and step-wise regression analyses were used to determine trait expression differences between high yielding and stable, and low yielding and unstable hybrids. Genotypic correlations and heritability were used to estimate correlated response to selection for grain yield via each secondary trait. Mean grain yield under drought was 20% of that across environments, thus selection in both drought and non-drought stress environments is required. Hybrids GH-12444 and GH-12408 were high yielding and stable across environments, and should be tested widely. Some traits, such as tassel size, had correlated response to selection values of near unity making them unsuitable for indirect selection. However, such traits could be used to supplement selection for grain yield given their high heritability and that they are relatively easy to measure. Different traits were associated with grain yield under different conditions thus suggesting that both drought and non-drought stress conditions must be used as selection environments using secondary traits specific to a given environment. © 2018 by the American Society of Agronomy.
546			_aText in English
650		7	_2AGROVOC _94709 _aYield increases
650		7	_aMaize _gAGROVOC _2 _91173
650		7	_91081 _aDrought stress _2AGROVOC
700	1		_aSetimela, P.S. _gFormerly Global Maize Program _gFormerly Sustainable Intensification Program _gSustainable Agrifood Systems _8INT2636 _9846
700	1		_aWali, M. C. _97493
700	1		_aGasura, E. _92001
700	1		_aChannappagoudar, B. B. _97494
700	1		_aPatil, S. S. _97495
773	0		_tAgronomy Journal _gv. 110, no. 3, p. 819-832 _dAmerican Society of Agronomy, 2018 _x00021962 _w444482
856	4		_uhttps://libcatalog.cimmyt.org/Download/cis/59512.pdf _yAccess only for CIMMYT Staff
942			_cJA _2ddc _n0