ArticleBMC plant biology2022
A new major QTL for flag leaf thickness in barley (Hordeum vulgare L.).
Article in BMC plant biology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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7 citing papers in PubMed, 35 citations in OpenAlex.
- Genetic basis of flag leaf thickness and its contribution to yield in wheat (Triticum aestivum L.).BMC plant biology · 2025Article
- Combining QTL mapping and RNA-Seq reveals candidate genes controlling flag leaf width in foxtail millet.BMC plant biology · 2025Article
- Identification of candidate genes for grain size in barley through combined GWAS and transcriptome analysis.Journal of plant research · 2025Article
- A missense mutation in the barley Xan-h gene encoding the Mg-chelatase subunit I leads to a viable pale green line with reduced daily transpiration rate.Plant cell reports · 2024Article
- QTL mapping for the flag leaf-related traits using RILs derived from Trititrigia germplasm line SN304 and wheat cultivar Yannong15 in multiple environments.BMC plant biology · 2024Article
- Transcriptome profiling disclosed the effect of single and combined drought and heat stress on reprogramming of genes expression in barley flag leaf.Frontiers in plant science · 2022Article
- Genetic dissection of quantitative trait loci for flag leaf size in bread wheat (Frontiers in plant science · 2022Article
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Authors and funding
7 authors at 5 institutions in 2 countries.
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No grant is acknowledged in the PubMed record.
Abstract
backgroundCarbohydrate accumulation of photosynthetic organs, mainly leaves, are the primary sources of grain yield in cereals. The flag leaf plays a vital role in seed development, which is probably the most neglected morphological characteristic during traditional selection processes.
resultsIn this experiment, four flag leaf morphological traits and seven yield-related traits were investigated in a DH population derived from a cross between a wild barley and an Australian malting barley cultivar. Flag leaf thickness (FLT) showed significantly positive correlations with grain size. Four QTL, located on chromosomes 1H, 2H, 3H, and 5H, respectively, were identified for FLT. Among them, a major QTL was located on chromosome 3H with a LOD value of 18.4 and determined 32% of the phenotypic variation. This QTL showed close links but not pleiotropism to the previously reported semi-dwarf gene sdw1 from the cultivated barley. This QTL was not reported before and the thick leaf allele from the wild barley could provide a useful source for improving grain yield through breeding.
conclusionsOur results also provided valuable evidence that source traits and sink traits in barley are tightly connected and suggest further improvement of barley yield potential with enhanced and balanced source and sink relationships by exploiting potentialities of the wild barley resources. Moreover, this study will provide a novel sight on understanding the evolution and development of leaf morphology in barley and improving barley production by rewilding for lost superior traits during plant evolution.
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