000			03424nab a22003617a 4500
999			_c60727 _d60719
001			60727
003			MX-TxCIM
005			20231017232835.0
008			190801s2019 ch |||p|op||| 00| 0 eng d
022			_a2095-7505
022			_a2095-977X (Online)
024	8		_ahttps://doi.org/10.15302/J-FASE-2019269
040			_aMX-TxCIM
041	0		_aeng
100	0		_99938 _8001711772 _aCaiyun Liu _gGlobal Wheat Program
245	1	0	_aSpectral reflectance indices as proxies for yield potential and heat stress tolerance in spring wheat : _bheritability estimates and marker-trait associations
260			_aBeijing (China) : _bHigher Education Press, _c2019.
500			_aPeer review
500			_aOpen Access
520			_aThe application of spectral reflectance indices (SRIs) as proxies to screen for yield potential (YP) and heat stress (HS) is emerging in crop breeding programs. Thus, a comparison of SRIs and their associations with grain yield (GY) under YP and HS conditions is important. In this study, we assessed the usefulness of 27 SRIs for indirect selection for agronomic traits by evaluating an elite spring wheat association mapping initiative (WAMI) population comprising 287 elite lines under YP and HS conditions. Genetic and phenotypic analysis identified 11 and 9 SRIs in different developmental stages as efficient indirect selection indices for yield in YP and HS conditions, respectively. We identified enhanced vegetation index (EVI) as the common SRI associated with GY under YP at booting, heading and late heading stages, whereas photochemical reflectance index (PRI) and normalized difference vegetation index (NDVI) were the common SRIs under booting and heading stages in HS. Genome-wide association study (GWAS) using 18704 single nucleotide polymorphisms (SNPs) from Illumina iSelect 90K identified 280 and 43 marker-trait associations for efficient SRIs at different developmental stages under YP and HS, respectively. Common genomic regions for multiple SRIs were identified in 14 regions in 9 chromosomes: 1B (60–62 cM), 3A (15, 85–90, 101– 105 cM), 3B (132–134 cM), 4A (47–51 cM), 4B (71– 75 cM), 5A (43–49, 56–60, 89–93 cM), 5B (124–125 cM), 6A (80–85 cM), and 6B (57–59, 71 cM). Among them, SNPs in chromosome 5A (89–93 cM) and 6A (80–85 cM) were co-located for yield and yield related traits. Overall, this study highlights the utility of SRIs as proxies for GY under YP and HS. High heritability estimates and identification of marker-trait associations indicate that SRIs are useful tools for understanding the genetic basis of agronomic and physiological traits.
546			_aText in English
591			_aCossani, C.M. : Not in IRS Staff list, not CIMMYT Affiliation
650		7	_aGenomes _gAGROVOC _2 _91131
650		7	_2AGROVOC _91972 _aHeat tolerance
650		7	_2AGROVOC _91806 _aSpring wheat
700	1		_aPinto Espinosa, F. _8I1707012 _gFormerly Global Wheat Program _94431
700	1		_9898 _aCossani, C.M. _8INT3189 _gGlobal Wheat Program
700	1		_aSukumaran, S. _gFormerly Global Wheat Program _8INT3330 _9920
700	1		_aReynolds, M.P. _gGlobal Wheat Program _8INT1511 _9831
773	0		_dBeijing (China) : Higher Education Press, 2019. _gv. 6, no. 3, p. 296-308 _tFrontiers of Agricultural Science and Engineering _wu56998 _x2095-7505
856	4		_yOpen Access through DSpace _uhttps://hdl.handle.net/10883/20180
942			_2ddc _cJA _n0