ArticleTAG. Theoretical and applied genetics. Theoretische und angewandte Genetik2018
Phenotypic and genetic analysis of spike and kernel characteristics in wheat reveals long-term genetic trends of grain yield components.
Article in TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 81 papers.
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81 citing papers in PubMed.
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- Integrated phenomic and genomic analyses unveil modes of altered phenotypic plasticity during wheat improvement.Genome biology · 2025Article
- Genetic dissection of plant height-related traits by combined methods in wheat (Triticum aestivum L.).BMC plant biology · 2025Article
- Association analysis of response to take-all disease with agronomic traits and molecular markers and selection ideal genotypes in bread wheat (Molecular breeding : new strategies in plant improvement · 2025Article
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- Evaluation of the Spike Diversity of Seven Hexaploid Wheat Species and an Artificial Amphidiploid Using a Quadrangle Model Obtained from 2D Images.Plants (Basel, Switzerland) · 2024Article
- Identification and characterization of QSFS.sau-MC-5A for sterile florets genetically independent of fertile ones per spike in wheat.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2024Article
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- Genome-wide association study and genomic selection of spike-related traits in bread wheat.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2024Article
- Genomic approaches to enhance adaptive plasticity to cope with soil constraints amidst climate change in wheat.The plant genome · 2024Review
- Genetic dissection of value-added quality traits and agronomic parameters through genome-wide association mapping in bread wheat (Frontiers in plant science · 2024Article
- Meta-QTL mapping for wheat thousand kernel weight.Frontiers in plant science · 2024Article
- Dissection and validation of a promising QTL controlling spikelet number on 5B in bread wheat.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2023Article
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- Predictor bias in genomic and phenomic selection.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2023Article
- Identification and Validation of a Stable Major-Effect Quantitative Trait Locus for Kernel Number per Spike on Chromosome 2D in Wheat (International journal of molecular sciences · 2023Article
21 more citing papers are in PubMed but not listed here.
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5 authors.
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Abstract
key messagePhenotypic and genetic analysis of six spike and kernel characteristics in wheat revealed geographic patterns as well as long-term trends arising from breeding progress, particularly in regard to spikelet fertility, i.e. the number of kernels per spikelet, a grain yield component that appears to underlie the increase in the number of kernels per spike. Wheat is a staple crop of global relevance that faces continuous demands for improved grain yield. In this study, we evaluated a panel of 407 winter wheat cultivars for six characteristics of spike and kernel development. All traits showed a large genotypic variation and had high heritabilities. We observed geographic patterns for some traits in addition to long-term trends showing a continuous increase in the number of kernels per spike. This breeding progress is likely due to the increase in spikelet fertility, i.e. the number of kernels per spikelet. While the number of kernels per spike and spikelet fertility were significantly positively correlated, both traits showed a significant negative correlation with thousand-kernel weight. Genome-wide association mapping identified only small- and moderate-effect QTL and an effect of the phenology loci Rht-D1 and Ppd-D1 on some of the traits. The allele frequencies of some QTL matched the observed geographic patterns. The quantitative inheritance of all traits with contributions of additional small-effect QTL was substantiated by genomic prediction. Taken together, our results suggest that some of the examined traits were already the basis of grain yield progress in wheat in the past decades. A more targeted exploitation of the available variation, potentially coupled with genomic approaches, may assist wheat breeding in continuing to increase yield levels globally.
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