000			03574nab|a22004217a|4500
001			67030
003			MX-TxCIM
005			20240119200543.0
008			202312s2023||||mx |||p|op||||00||0|eng|d
022			_a2581-8627
024			_ahttps://doi.org/10.9734/ijecc/2023/v13i113323
040			_aMX-TxCIM
041			_aeng
100	1		_aSwamy, N. _932801
245	1	0	_aCharacter association study in maize hybrids developed through integration of rapid cycle genomic selection and doubled haploid technology for heat stress tolerance
260			_bSciencedomain International, _c2023. _aIndia :
500			_aPeer review
500			_aOpen Access
520			_aHeat stress is becoming a major constraint for maize production; therefore heat stress resilience has emerged as an important aspect in maize hybrids targeted for post rainy spring season. Selection of genotypes based on high grain yield under heat stress condition is often misleading and the identification of secondary traits also associated with grain yield may help in development of heat tolerant cultivars. Hence, the present research work to study the association of traits was conducted during summer and kharif 2018 and rabi 2018-19 at Bheemarayanagudi and Raichur using 111 testcross progenies of doubled haploids derived from C1, C2 and C3 cycles of multi-parental synthetic population 1 and 2 improved through rapid cycle genomic selection for heat stress tolerance. The phenotypic correlation analysis under heat stress and optimal conditions, number of kernels per cob and cob girth exhibited the strong positive association with grain yield per plant. Further, under early spring condition number of kernels per cob, cob length, cob girth and 100 grain weight recorded the strong positive association with grain yield per plant. However, when considering across heat stress, early spring and optimal conditions, the grain yield per plant showed positive and significant strong to moderate association with the traits viz., number of kernels per cob, cob length and cob girth under all the seasons. In addition, days to 50% silking showed significant negative correlation with grain yield per plant under heat stress and optimal condition. Hence, the simultaneous selection criteria for the genotypes that exerts early silking, higher number of kernels per cob, higher cob girth and lengthy cob should be the priority of breeders to achieve higher grain yields in maize under heat stress condition as well as optimal conditions.
546			_aText in English
597			_aClimate adaptation & mitigation _bAccelerated Breeding _cGenetic Innovation _dUnited States Agency for International Development _uhttps://hdl.handle.net/10568/138044
650		7	_aMaize _2AGROVOC _91173
650		7	_aHeat stress _2AGROVOC _91971
650		7	_aMarker-assisted selection _2AGROVOC _910737
650		7	_aDoubled haploids _2AGROVOC _929363
650		7	_aPhenotypic variation _2AGROVOC _98102
650		7	_aClimate change _2AGROVOC _91045
700	1		_aKuchanur, P.H. _93769
700	1		_aPatil, A. _93768
700	1		_aZaidi, P.H. _9862 _8INT2823 _gGlobal Maize Program
700	1		_aVinayan, M.T. _9925 _8INT3341 _gGlobal Maize Program
700	1		_aArunkumar, B. _95754
700	1		_aSowmya, H.C. _918126
700	1		_aDhanoji, M.M. _918124
773	0		_tInternational Journal of Environment and Climate Change _gv. 12, no. 11, p. 1678-1693 _dIndia : Sciencedomain International,, 2023 _x2581-8627
856	4		_yOpen Access through DSpace _uhttps://hdl.handle.net/10883/22863
942			_cJA _n0 _2ddc
999			_c67030 _d67022