Abstract
Wheat (Triticum aestivum L.) is among the most extensively grown staple crops worldwide. A set of 188 recombinant inbred lines (RILs) derived from a cross between HD2932 and Synthetic 46 was evaluated over three consecutive years (2021-22, 2022-23, and 2023-24) for plant height (PH), spike length (SL), spikelets per spike (SPS), thousand kernel weight (TKW), kernel length (KL), kernel width (KW), and kernel thickness (KT). The population displayed wide phenotypic variability with quantitative inheritance for all the traits. High-density genotyping was performed using 910 SSR markers and a 35K SNP array. Twenty-eight QTLs, including six for PH, two for SL, three for SPS, two for TKW, five for KL, six for KW, and four for KT distributed across 16 chromosomes were identified. QTkw.iari_4B, flanked by Xgwm149-AX-94559916, was detected in all three environments (Q × E not formally tested) consistently and co-localized with QTLs for PH, KL, and KT, indicating a potentially important genomic region for yield improvement. Promising lines such as RIL 122 and RIL 66 exhibited superior kernel characteristics, while RIL 155 showed lower expression values. In silico analysis identified 28 candidate genes within these QTL regions, offering insights into trait regulation. These findings may serve as potential resources for marker-assisted selection in wheat breeding programs to enhance yield and grain quality parameters.
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Claims 8
Claim · model-written summary
The RIL population showed wide variability and quantitative inheritance across all studied traits.
- Taxon
- Wheat
Triticum aestivume1 - Outcome
- wide phenotypic variability with quantitative inheritancee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The population displayed wide phenotypic variability with quantitative inheritance for all the traits.”
e1“Wheat (Triticum aestivum L.)”
Claim · model-written summary
Twenty-eight QTLs for seven traits were identified on 16 chromosomes.
- Taxon
- WheatTriticum aestivume1
- Outcome
- Twenty-eight QTLse0
- Value
- Twenty-eighte0
- Qualifier
- 16 chromosomese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Twenty-eight QTLs, including six for PH, two for SL, three for SPS, two for TKW, five for KL, six for KW, and four for KT distributed across 16 chromosomes were identified.”
e1“Wheat (Triticum aestivum L.)”
Claim · model-written summary
QTkw.iari_4B was detected in all three environments.
- Taxon
- bread wheatTriticum aestivumt0
- Gene
- QTkw.iari_4Be0
- Outcome
- detected in all three environmentse0
- Qualifier
- Q × E not formally testede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“QTkw.iari_4B, flanked by Xgwm149-AX-94559916, was detected in all three environments (Q × E not formally tested) consistently”
t0“bread wheat”
Claim · model-written summary
QTkw.iari_4B co-localized with QTLs for PH, KL and KT.
- Taxon
- bread wheatTriticum aestivumt0
- Gene
- QTkw.iari_4Be1
- Outcome
- co-localized with QTLs for PH, KL, and KTe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“co-localized with QTLs for PH, KL, and KT”
e1“QTkw.iari_4B, flanked by Xgwm149-AX-94559916”
t0“bread wheat”
Claim · model-written summary
RIL 122 had superior kernel characteristics.
- Taxon
- bread wheatTriticum aestivumt0
- Material
- RIL 122e0
- Outcome
- kernel characteristicse0
- Direction
- superiore0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Promising lines such as RIL 122 and RIL 66 exhibited superior kernel characteristics”
t0“bread wheat”
Claim · model-written summary
RIL 66 had superior kernel characteristics.
- Taxon
- bread wheatTriticum aestivumt0
- Material
- RIL 66e0
- Outcome
- kernel characteristicse0
- Direction
- superiore0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Promising lines such as RIL 122 and RIL 66 exhibited superior kernel characteristics”
t0“bread wheat”
Claim · model-written summary
RIL 155 showed lower expression values.
- Taxon
- bread wheatTriticum aestivumt0
- Material
- RIL 155e0
- Outcome
- expression valuese0
- Direction
- lowere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“RIL 155 showed lower expression values.”
t0“bread wheat”
Claim · model-written summary
In silico analysis identified 28 candidate genes in QTL regions.
- Taxon
- bread wheatTriticum aestivumt0
- Outcome
- candidate genese0
- Value
- 28e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In silico analysis identified 28 candidate genes within these QTL regions”
t0“bread wheat”