000			03833nab|a22004577a|4500
001			69564
003			MX-TxCIM
005			20251223161419.0
008			251120s2025 sz ||||| |||| 00| 0 eng d
022			_a2073-4425
024	8		_ahttps://doi.org/10.3390/genes16010064
040			_aMX-TxCIM
041			_aeng
100	0		_aSaba Baba Mohammed _934293
245	1	0	_aQuantitative Trait Loci for phenology, yield, and phosphorus use efficiency in cowpea
260			_aBasel (Switzerland) : _bMDPI, _c2025.
500			_aPeer review
500			_aOpen Access
520			_aBackground/Objectives: Cowpea is an important legume crop in sub-Saharan Africa (SSA) and beyond. However, access to phosphorus (P), a critical element for plant growth and development, is a significant constraint in SSA. Thus, it is essential to have high P-use efficiency varieties to achieve increased yields in environments where little-to- no phosphate fertilizers are applied. Methods: In this study, crop phenology, yield, and grain P efficiency traits were assessed in two recombinant inbred line (RIL) populations across ten environments under high- and low-P soil conditions to identify traits’ response to different soil P levels and associated quantitative trait loci (QTLs). Single-environment (SEA) and multi-environment (MEA) QTL analyses were conducted for days to flowering (DTF), days to maturity (DTM), biomass yield (BYLD), grain yield (GYLD), grain P-use efficiency (gPUE) and grain P-uptake efficiency (gPUpE). Results: Phenotypic data indicated significant variation among the RILs, and inadequate soil P had a negative impact on flowering, maturity, and yield traits. A total of 40 QTLs were identified by SEA, with most explaining greater than 10% of the phenotypic variance, indicating that many major-effect QTLs contributed to the genetic component of these traits. Similarly, MEA identified 23 QTLs associated with DTF, DTM, GYLD, and gPUpE under high- and low-P environments. Thirty percent (12/40) of the QTLs identified by SEA were also found by MEA, and some of those were identified in more than one P environment, highlighting their potential in breeding programs targeting PUE. QTLs on chromosomes Vu03 and Vu08 exhibited consistent effects under both high- and low-P conditions. In addition, candidate genes underlying the QTL regions were identified. Conclusions: This study lays the foundation for molecular breeding for PUE and contributes to understanding the genetic basis of cowpea response in different soil P conditions. Some of the identified genomic loci, many being novel QTLs, could be deployed in marker-aided selection and fine mapping of candidate genes.
546			_aText in English
597			_bAccelerated Breeding _bBreeding Resources _bClimate Resilience _aClimate adaptation & mitigation _aNutrition, health & food security _cGenetic Innovation _dInternational Institute of Tropical Agriculture (IITA) _uhttps://hdl.handle.net/10568/173813
650		7	_aCowpeas _2AGROVOC _95144
650		7	_aPhosphorus _2AGROVOC _95314
650		7	_aUse efficiency _2AGROVOC _911688
650		7	_aGrain _2AGROVOC _91138
650		7	_aCrop yield _2AGROVOC _91066
650		7	_aQuantitative Trait Loci _2AGROVOC _91853
650		7	_aSoil fertility _2AGROVOC _91952
700	1		_aOngom, P.O. _928823
700	1		_aBelko, N. _940597
700	0		_aMuhammad Lawan Umar _932979
700	1		_aMuñoz-Amatriaín, M. _940598
700	0		_aBao-Lam Huynh _933483
700	1		_aTogola, A. _8001714312 _gGlobal Maize Program _917502
700	1		_aIshiyaku, M.F. _926639
700	1		_aBoukar, O. _915443
773	0		_tGenes _gv. 16, no. 1, art. 64 _dBasel (Switzerland) : MDPI, 2024. _x2073-4425
856	4		_yOpen Access through DSpace _uhttps://hdl.handle.net/10883/36392
942			_cJA _n0 _2ddc
999			_c69564 _d69556