ArticleBMC genomics2021
Genome wide association mapping for heat tolerance in sub-tropical maize.
Article in BMC genomics, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.
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Who cites it
20 citing papers in PubMed, 48 citations in OpenAlex.
- Integrating molecular networks and physiological adaptation for heat-resilient crops.Journal of integrative plant biology · 2026Review
- Bioinformatics in crop research: using genomic data for crop improvement.Frontiers in plant science · 2026Review
- Integrating Genetic Diversity and Agronomic Innovations for Climate-Resilient Maize Systems.Plants (Basel, Switzerland) · 2025Review
- Impact of High-Temperature Stress on Maize Seed Setting: Cellular and Molecular Insights of Thermotolerance.International journal of molecular sciences · 2025Review
- SeqSNP-based genic markers reveal genetic architecture and candidate genes for low nitrogen tolerance in tropical maize inbred lines.Frontiers in plant science · 2025Article
- Genome-wide association analysis of grain yield and Striga hermonthica and S. asiatica resistance in tropical and sub-tropical maize populations.BMC plant biology · 2024Article
- Advancements and Prospects of Genome-Wide Association Studies (GWAS) in Maize.International journal of molecular sciences · 2024Review
- Article
- Transcriptional dynamics of maize leaves, pollens and ovules to gain insights into heat stress-related responses.Frontiers in plant science · 2023Article
- Mechanistic Concept of Physiological, Biochemical, and Molecular Responses of the Potato Crop to Heat and Drought Stress.Plants (Basel, Switzerland) · 2022Review
- Article
- Reproductive-Stage Heat Stress in Cereals: Impact, Plant Responses and Strategies for Tolerance Improvement.International journal of molecular sciences · 2022Review
- Article
- Effects of Raised Ambient Temperature on the Local and Systemic Adaptions of Maize.Plants (Basel, Switzerland) · 2022Review
- Article
- Improvement of heat stress tolerance in soybean (Frontiers in plant science · 2022Review
- SNP-Based Genome-Wide Association Mapping of Pollen Viability Under Heat Stress in TropicalFrontiers in genetics · 2022Article
- Heat Stress-Mediated Constraints in Maize (Frontiers in plant science · 2022Review
- Genome-Wide Association Analyses Track Genomic Regions for Resistance toFrontiers in plant science · 2022Article
- Genomic regions associated with heat stress tolerance in tropical maize (Zea mays L.).Scientific reports · 2021Article
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Authors and funding
8 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundHeat tolerance is becoming increasingly important where maize is grown under spring season in India which coincide with grain filling stage of crop resulting in tassel blast, reduced pollen viability, pollination failure and barren ears that causes devastating yield losses. So, there is need to identify the genomic regions associated with heat tolerance component traits which could be further employed in maize breeding program.
resultsAn association mapping panel, consisting of 662 doubled haploid (DH) lines, was evaluated for yield contributing traits under normal and natural heat stress conditions. Genome wide association studies (GWAS) carried out using 187,000 SNPs and 130 SNPs significantly associated for grain yield (GY), days to 50% anthesis (AD), days to 50% silking (SD), anthesis-silking interval (ASI), plant height (PH), ear height (EH) and ear position (EPO) were identified under normal conditions. A total of 46 SNPs strongly associated with GY, ASI, EH and EPO were detected under heat stress conditions. Fifteen of the SNPs was found to have common association with more than one trait such as two SNPs viz. S10_1,905,273 and S10_1,905,274 showed colocalization with GY, PH and EH whereas S10_7,132,845 SNP associated with GY, AD and SD under normal conditions. No such colocalization of SNP markers with multiple traits was observed under heat stress conditions. Haplotypes trend regression analysis revealed 122 and 85 haplotype blocks, out of which, 20 and 6 haplotype blocks were associated with more than one trait under normal and heat stress conditions, respectively. Based on SNP association and haplotype mapping, nine and seven candidate genes were identified respectively, which belongs to different gene models having different biological functions in stress biology.
conclusionsThe present study identified significant SNPs and haplotype blocks associated with yield contributing traits that help in selection of donor lines with favorable alleles for multiple traits. These results provided insights of genetics of heat stress tolerance. The genomic regions detected in the present study need further validation before being applied in the breeding pipelines.
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