ArticleFrontiers in plant science2019
Understanding the Genetic Basis of Spike Fertility to Improve Grain Number, Harvest Index, and Grain Yield in Wheat Under High Temperature Stress Environments.
Article in Frontiers in plant science, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers.
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30 citing papers in PubMed, 87 citations in OpenAlex.
- Heat stress responses of plants during adaptation to high temperature environments: A review of recent advances and insights.Plant signaling & behavior · 2026Review
- Identification of a stable genetic locus and candidate genes for Fusarium head blight resistance on wheat chromosome 3BL.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2025Article
- Discovering leaf and stripe rust resistance in soft red winter wheat through genome-wide association studies.The plant genome · 2025Article
- Enhancing prediction accuracy of key biomass partitioning traits in wheat using multi-kernel genomic prediction models integrating secondary traits and environmental covariates.The plant genome · 2025Article
- Dissecting the genetic basis of fruiting efficiency for genetic enhancement of harvest index, grain number, and yield in wheat.BMC plant biology · 2025Article
- Spatial patterns and key driving factors of wheat harvest index under irrigation and rainfed conditions in arid regions.Frontiers in plant science · 2025Article
- Deciphering the genetic basis of novel traits that discriminate useful and non-useful biomass to enhance harvest index in wheat.The plant genome · 2024Article
- Article
- Optimizing Soil Health and Sorghum Productivity through Crop Rotation with Quinoa.Life (Basel, Switzerland) · 2024Article
- Genomic wide association study and selective sweep analysis identify genes associated with improved yield under drought in Turkish winter wheat germplasm.Scientific reports · 2024Article
- Genomic regions of durum wheat involved in water productivity.Journal of experimental botany · 2024Article
- Genome-wide association mapping in elite winter wheat breeding for yield improvement.Journal of applied genetics · 2023Article
- The Response of Chromosomally Engineered Durum Wheat-Plants (Basel, Switzerland) · 2023Article
- Genetics of Fusarium head blight resistance in soft red winter wheat using a genome-wide association study.The plant genome · 2022Article
- Grain carbon isotope composition is a marker for allocation and harvest index in wheat.Plant, cell & environment · 2022Article
- Reproductive-Stage Heat Stress in Cereals: Impact, Plant Responses and Strategies for Tolerance Improvement.International journal of molecular sciences · 2022Review
- Multi-trait genomic prediction using in-season physiological parameters increases prediction accuracy of complex traits in US wheat.BMC genomics · 2022Article
- Comprehensive evaluation of mapping complex traits in wheat using genome-wide association studies.Molecular breeding : new strategies in plant improvement · 2022Review
- Genetic dissection of grain architecture-related traits in a winter wheat population.BMC plant biology · 2021Article
- Elucidating the Response of Crop Plants towards Individual, Combined and Sequentially Occurring Abiotic Stresses.International journal of molecular sciences · 2021Review
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Authors and funding
18 authors at 7 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Moderate heat stress accompanied by short episodes of extreme heat during the post-anthesis stage is common in most US wheat growing areas and causes substantial yield losses. Sink strength (grain number) is a key yield limiting factor in modern wheat varieties. Increasing spike fertility (SF) and improving the partitioning of assimilates can optimize sink strength which is essential to improve wheat yield potential under a hot and humid environment. A genome-wide association study (GWAS) allows identification of novel quantitative trait loci (QTLs) associated with SF and other partitioning traits that can assist in marker assisted breeding. In this study, GWAS was performed on a soft wheat association mapping panel (SWAMP) comprised of 236 elite lines using 27,466 single nucleotide polymorphisms (SNPs). The panel was phenotyped in two heat stress locations over 3 years. GWAS identified 109 significant marker-trait associations (MTAs) (p ≤ 9.99 x 10-5) related to eight phenotypic traits including SF (a major component of grain number) and spike harvest index (SHI, a major component of grain weight). MTAs detected on chromosomes 1B, 3A, 3B, and 5A were associated with multiple traits and are potentially important targets for selection. More than half of the significant MTAs (60 out of 109) were found in genes encoding different types of proteins related to metabolism, disease, and abiotic stress including heat stress. These MTAs could be potential targets for further validation study and may be used in marker-assisted breeding for improving wheat grain yield under post-anthesis heat stress conditions. This is the first study to identify novel QTLs associated with SF and SHI which represent the major components of grain number and grain weight, respectively, in wheat.
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