Evidence map›Paper›PMID 42477539›Full record

ArticleBMC genomics2026

Two putatively novel loci associated with spike length and their breeding potential in Chinese endemic wheat.

Puyang Ding, Haopeng Zhang, Chao Wang, Tongzhu Wang, Md Nahibuzzaman Lohani, Jiating Chen, Xia Yang, Hafiz Muhammad Faisal Umer, Muhammad Junaid Jalil, Yunfeng Jiang and 3 more

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In one paragraph

Article in BMC genomics, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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1 · What the graph read from it

What it found

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2 · The registry

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3 · Its place in the literature

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4 · The record

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5 · Who and what money

Authors and funding

13 authors.

Puyang Ding *School of Biological and Pharmaceutical Sciences, Mianyang Teachers' College, Mianyang, Sichuan, China.
Haopeng Zhang *State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China/Triticeae Research Institute, Sichuan Agricultural University, Chengdu, Sichuan, China.
Chao Wang *State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China/Triticeae Research Institute, Sichuan Agricultural University, Chengdu, Sichuan, China.
Tongzhu WangState Key Laboratory of Crop Gene Exploration and Utilization in Southwest China/Triticeae Research Institute, Sichuan Agricultural University, Chengdu, Sichuan, China.
Md Nahibuzzaman LohaniState Key Laboratory of Crop Gene Exploration and Utilization in Southwest China/Triticeae Research Institute, Sichuan Agricultural University, Chengdu, Sichuan, China.
Jiating ChenState Key Laboratory of Crop Gene Exploration and Utilization in Southwest China/Triticeae Research Institute, Sichuan Agricultural University, Chengdu, Sichuan, China.
Xia YangState Key Laboratory of Crop Gene Exploration and Utilization in Southwest China/Triticeae Research Institute, Sichuan Agricultural University, Chengdu, Sichuan, China.
Hafiz Muhammad Faisal UmerState Key Laboratory of Crop Gene Exploration and Utilization in Southwest China/Triticeae Research Institute, Sichuan Agricultural University, Chengdu, Sichuan, China.
Muhammad Junaid JalilState Key Laboratory of Crop Gene Exploration and Utilization in Southwest China/Triticeae Research Institute, Sichuan Agricultural University, Chengdu, Sichuan, China.
Yunfeng JiangState Key Laboratory of Crop Gene Exploration and Utilization in Southwest China/Triticeae Research Institute, Sichuan Agricultural University, Chengdu, Sichuan, China.
Guoyue ChenState Key Laboratory of Crop Gene Exploration and Utilization in Southwest China/Triticeae Research Institute, Sichuan Agricultural University, Chengdu, Sichuan, China.
Quan XieState Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Nanjing Agricultural University, Nanjing, 210 095, China. quanxie@njau.edu.cn.
Jian MaState Key Laboratory of Crop Gene Exploration and Utilization in Southwest China/Triticeae Research Institute, Sichuan Agricultural University, Chengdu, Sichuan, China. jianma@sicau.edu.cn.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Spike length (SL) is a key determinant of wheat spike architecture and yield potential. In this study, SL was evaluated across multiple environments in a panel of 182 Chinese endemic wheat accessions. Substantial phenotypic variation and high broad-sense heritability were observed, indicating strong genetic control. Genome-wide association study (GWAS) was performed using 38,490 high-quality SNPs under a mixed linear model incorporating population structure and kinship (Q + K). Four loci significantly associated with SL were identified on chromosomes 2B, 3B, 4A, and 7A, explaining 2.53-8.06% of the phenotypic variation. Two loci on chromosomes 4A and 7A co-localized with previously reported SL QTL within the linkage disequilibrium decay distance, confirming their genetic stability. In contrast, loci on chromosomes 2B (QSL.sau.2B) and 3B (QSL.sau.3B) reside in genomic regions not previously associated with SL, suggesting potentially novel genetic factors. Allelic effect analysis based on BLUP values revealed pleiotropic effects of SL-associated loci on spike density, spikelet number, plant height, and anthesis date. Notably, QSL.sau.3B was consistently associated with SL across environments and further supported through effect analysis in an additional wheat population of 220 accessions, confirming its stability and breeding relevance. These results advance understanding of the genetic architecture of SL and provide valuable resources for wheat improvement.

Indexed as

Plant BreedingQuantitative Trait LociTriticumChromosome MappingChromosomes, PlantGenome-Wide Association StudyLinkage DisequilibriumPhenotypePolymorphism, Single NucleotideBread wheatChinese endemic wheatGenome-wide association studyQuantitative trait lociSpike architectureSpike length

Identifiers

PMID42477539
PMCPMC13670624

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.