ArticleBMC plant biology2024
QTL analysis in the Mianmai 902×Taichang 29 RIL population reveals the genetic basis for the high-yield of wheat cultivars Mianmai 902 in terms of spike and plant architecture.
Article in BMC plant biology, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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3 citing papers in PubMed.
- Genetic dissection of a key dynamic growth period QTL for source-sink-related traits and its breeding application potential in wheat.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2026Article
- Functional 5Bq allele is responsible for the compact spike phenotype in common wheat (Triticum aestivum L.).BMC plant biology · 2026Article
- Dissecting the genetic architecture of yield-related traits by QTL mapping in maize.Frontiers in plant science · 2025Article
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Abstract
Spike-related traits and plant height (PH) are greatly associated with wheat yield. Identification of stable quantitative trait loci (QTL) for these traits is crucial for understanding the genetic basis for yield and their further application in breeding. In this study, QTL analysis for spikelet number per spike (SNS), spike length (SL), spike compactness (SC) and PH was performed using a recombinant inbred line (RIL) population derived from a cross between wheat cultivars Mianmai902 (MM902) and Taichang29 (TC29). Thirteen stably expressed QTLs were identified, and the most favorable alleles were contributed by MM902. The mjaor QTL, QSNS-MT.cib-2D, QSL-MT.cib-2D, QSC-MT.cib-2D, QSC-MT.cib-6 A, QPH-MT.cib-4B and QPH-MT.cib-4D, were repeatedly detected in multiple environments and explained 5.77-47.11% of the phenotypic variations. By employing the Kompetitive Allele Specific PCR markers, the most major QTLs were successfully validated in multiple populations derived from different genetic backgrounds. Moreover, the individual and pyramiding effects of major QTLs on SNS, SL, SC, PH, grain number per spike (GNS) and thousand-grain weight (TGW) were investigated and their potential utilization value in breeding was showcased. Ppd-D1 was predicted as the candidate for QSNS/SL/SC/PH-MT.cib-2D, and MM902 carried the Ppd-D1d allele. Ppd-D1d is rare in Chinese winter wheat cultivars and may be an elite alternative allele of the Ppd-D1a allele. In summary, these QTLs revealed the genetic basis of the spike-related traits and PH of MM902, which partially contributed to the high yield of MM902 and have application potential in wheat breeding by optimizing spike morphology and PH to improve yield.
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