Inheritance, QTLs, and Candidate Genes of Lint Percentage in Upland Cotton

Niu, Hao; Gě, Qún; Shāng, Hǎihóng; Yuán, Yǒulù

doi:10.3389/fgene.2022.855574

Cited by 9 publications

(7 citation statements)

References 124 publications

(223 reference statements)

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“…The results from the aforementioned studies and the present study show that while yield improvement is an important goal of modern breeding efforts, it is a complicated trait that is heavily influenced by environment. Therefore, targeted selection using yield components with high heritability is a more widely utilized approach to improve the genetic yield potential of cotton than using yield alone as the selection criterion (Chapepa et al., 2022; Niu et al., 2022). However, in the current study, 4 out of 19 years (2009, 2011, 2014, 2020) were identified in which genotypic contributions to lint yield were greater than environmental contributions.…”

Section: Resultsmentioning

confidence: 99%

Genotypic and environmental contributions to lint yield, yield components, and fiber quality in upland cotton from Arkansas variety trials over a 19‐year period

2023

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Lint yields and their underlying yield components can be substantially influenced by genotype and environment. Thus, the objectives of the current study were to quantify genotypic and environmental contributions to lint yield, yield components, and fiber quality in multi‐site variety trials conducted in Arkansas over a 19‐year period, to identify the traits most strongly associated with lint yield, and to quantify long‐term trends in the aforementioned traits. Annual assessments included lint yield, seeds per hectare (SPH), intra‐boll yield components, and fiber quality parameters. Production environment accounted for a higher percentage of all yield variability in 15 out of 19 years. However, four years were identified in which genotypic contributions were greater than environmental contributions. Genotype was a dominant driver of variability in lint percent, lint index, seed score, seed index, fibers per seed, fiber density, fiber length, strength, and uniformity. Production environment was the dominant driver of variability in SPH, and micronaire. Correlations between yield components and yield varied substantially from year to year, even when genotype was the primary yield driver. A regression function that utilized lint index and SPH was a stronger and more consistent indicator of genotypic variation in lint yield than any single yield component. Finally, long‐term trends show that lint percent has increased significantly over the past 19 years, whereas seed index has declined 19.6% for cotton varieties with the highest lint yields.

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Section: Resultsmentioning

confidence: 99%

Genotypic and environmental contributions to lint yield, yield components, and fiber quality in upland cotton from Arkansas variety trials over a 19‐year period

2023

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“…In addition, we surveyed 54 studies about linkage and association mapping on lint percentage (Table S3; Figure 1) and found that lint percentage QTL were distributed evenly between the A and D sub-genomes (1392 and 1285). Niu et al [34] summarized QTL for lint percentage and found that the A sub-genome contained similar unique, tightly linked, and major QTL to that of the D sub-genome. Similarly, Said et al [35] also reported that yield-related QTL were almost evenly distributed between the A and D sub-genomes [35].…”

Section: Genome-wide Association Study For Lint Percentagementioning

confidence: 99%

Genome-Wide Association Study of Lint Percentage in Gossypium hirsutum L. Races

Wang

Guo

Cai

et al. 2023

IJMS

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Lint percentage is one of the most essential yield components and an important economic index for cotton planting. Improving lint percentage is an effective way to achieve high-yield in cotton breeding worldwide, especially upland cotton (Gossypium hirsutum L.). However, the genetic basis controlling lint percentage has not yet been systematically understood. Here, we performed a genome-wide association mapping for lint percentage using a natural population consisting of 189 G. hirsutum accessions (188 accessions of G. hirsutum races and one cultivar TM-1). The results showed that 274 single-nucleotide polymorphisms (SNPs) significantly associated with lint percentage were detected, and they were distributed on 24 chromosomes. Forty-five SNPs were detected at least by two models or at least in two environments, and their 5 Mb up- and downstream regions included 584 makers related to lint percentage identified in previous studies. In total, 11 out of 45 SNPs were detected at least in two environments, and their 550 Kb up- and downstream region contained 335 genes. Through RNA sequencing, gene annotation, qRT-PCR, protein–protein interaction analysis, the cis-elements of the promotor region, and related miRNA prediction, Gh_D12G0934 and Gh_A08G0526 were selected as key candidate genes for fiber initiation and elongation, respectively. These excavated SNPs and candidate genes could supplement marker and gene information for deciphering the genetic basis of lint percentage and facilitate high-yield breeding programs of G. hirsutum ultimately.

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“…In every commercial cotton breeding program, lint output remains the top objective [39][40][41]. Lint percent, which is a component of lint output, was probably one of the first qualities to be chosen throughout the domestication process and in early breeding, and is still the most desired character [23,[42][43][44][45][46]. Environmental stability [47,48] and early maturity [49][50][51] are two more agronomic features that have risen in relevance [37].…”

Section: Cotton Improvementmentioning

confidence: 99%

Inter-Specific Hybridization in Cotton (Gossypium hirsutum) for Crop Improvement

et al. 2022

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Interspecific hybridization has contributed significantly to land diversity, species evolution, and crops’ domestication, including upland cotton, the cultivated form of Gossypium hirsutum. Being the world’s most important fiber crop species, Gossypium hirsutum belongs to the allotetraploid Gossypium consisting of six additional tetraploid species. The lint fiber evolved once in diploid parent A-genome species in the Gossypium’s history and passed on during hybridization of the A-genome with the D-genome and was maintained in subsequent evolution. The domestication history of G. hirsutum involved the collection and use of lint fibers by indigenous people for the purpose of making strings and other textile products; hence, spinnable lint fibers were likely to have evolved under domestication. Crossing with G. barbadense has resulted in the development of multiple genetic lines in contemporary upland cotton. However, in later-generation hybrids between G. hirsutum and other polyploid species, reproductive barriers such as reduced fertility, segregation distortion, and hybrid breakdown are frequently observed, complicating the task of introgressing new, stably inherited allelic variation from inter-specific hybridization. Recent efforts in molecular genetics research have provided insights into the location and effects of QTLs from wild species that are associated with traits important to cotton production. These and future research efforts will undoubtedly provide the tools that can be utilized by plant breeders to access novel genes from wild and domesticated allotetraploid Gossypium for upland cotton improvement.

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Inheritance, QTLs, and Candidate Genes of Lint Percentage in Upland Cotton

Cited by 9 publications

References 124 publications

Genotypic and environmental contributions to lint yield, yield components, and fiber quality in upland cotton from Arkansas variety trials over a 19‐year period

Genotypic and environmental contributions to lint yield, yield components, and fiber quality in upland cotton from Arkansas variety trials over a 19‐year period

Genome-Wide Association Study of Lint Percentage in Gossypium hirsutum L. Races

Inter-Specific Hybridization in Cotton (Gossypium hirsutum) for Crop Improvement

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