Molecular Breeding of Cotton

Bolek, Yuksel; Hayat, Khezir; Bardak, Adem; TehseenAzhar, Muhammad

doi:10.5772/64593

Cited by 8 publications

(4 citation statements)

References 193 publications

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“…Many molecular markers tagged through numerous traditional QTL-mapping studies, except those monogenically inherited resistance traits (e.g. [ 138 , 139 ]), have had a limited success in cotton breeding programs [ 139 ]. This may be primarily connected with (1) complexity and polyploidy of the cotton genome, (2) polygenic and epigenetic nature of inheritance of many important QTLs including fiber traits, which are greatly impacted from G by E interactions and (3) specificity of tagged molecular markers to a bi-parentally-derived mapping population, making markers meaningless when other populations or genotypes are used [ 30 , 139 ].…”

Section: Discussionmentioning

confidence: 99%

“…For instance, previous efforts on association mapping in a large set of Upland cultivars and exotic landrace stock germplasm [ 9 , 33 ] have helped us to design a successful molecular breeding program in Uzbekistan. In a short time, using SSR markers associated with fiber length, strength and micronaire traits, novel cotton cultivars series “Ravnaq” (translates from Uzbek as “Advance”) with improved fiber quality traits have been developed, which are currently under evaluation of State Variety Testing Stations of Uzbekistan [ 139 , 140 ]. This exemplifies the usefulness of genome-wide association mapping studies of cotton that should be highly efficient with application of recently developed genome-anchored SNPs [ 100 ] because of genome wide scale and considering many alleles and genetic interactions.…”

Section: Discussionmentioning

confidence: 99%

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Genetic diversity, linkage disequilibrium, and association mapping analyses of Gossypium barbadense L. germplasm

et al. 2017

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Limited polymorphism and narrow genetic base, due to genetic bottleneck through historic domestication, highlight a need for comprehensive characterization and utilization of existing genetic diversity in cotton germplasm collections. In this study, 288 worldwide Gossypium barbadense L. cotton germplasm accessions were evaluated in two diverse environments (Uzbekistan and USA). These accessions were assessed for genetic diversity, population structure, linkage disequilibrium (LD), and LD-based association mapping (AM) of fiber quality traits using 108 genome-wide simple sequence repeat (SSR) markers. Analyses revealed structured population characteristics and a high level of intra-variability (67.2%) and moderate interpopulation differentiation (32.8%). Eight percent and 4.3% of markers revealed LD in the genome of the G. barbadense at critical values of r2 ≥ 0.1 and r2 ≥ 0.2, respectively. The LD decay was on average 24.8 cM at the threshold of r2 ≥ 0.05. LD retained on average distance of 3.36 cM at the threshold of r2 ≥ 0.1. Based on the phenotypic evaluations in the two diverse environments, 100 marker loci revealed a strong association with major fiber quality traits using mixed linear model (MLM) based association mapping approach. Fourteen marker loci were found to be consistent with previously identified quantitative trait loci (QTLs), and 86 were found to be new unreported marker loci. Our results provide insights into the breeding history and genetic relationship of G. barbadense germplasm and should be helpful for the improvement of cotton cultivars using molecular breeding and omics-based technologies.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Genetic diversity, linkage disequilibrium, and association mapping analyses of Gossypium barbadense L. germplasm

et al. 2017

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“…Most of the currently employed methods in conventional cotton breeding projects are the same as those used in the previous half-century, while the breeding technologies evolved substantially with the passage of time. So by coupling these conventional methods with advanced gene editing techniques such as insertion of desired genes using CRISPR can help to dig out the dilemma of declining cotton production [94,95].…”

Section: Classical Breeding In Cottonmentioning

confidence: 99%

Genomic Dynamics and Functional Insights under Salt Stress in Gossypium hirsutum L.

Anwar

Ijaz

Ditta

et al. 2023

Genes

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The changing climate is intensifying salt stress globally. Salt stress is a menace to cotton crop quality and yield. The seedling, germination, and emergence phases are more prone to the effects of salt stress than other stages. Higher levels of salt can lead to delayed flowering, a reduced number of fruiting positions, shedding of fruits, decreased boll weight, and yellowing of fiber, all of which have an adverse effect on the yield and quality of the seed cotton. However, sensitivity toward salt stress is dependent on the salt type, cotton growth phase, and genotype. As the threat of salt stress continues to grow, it is crucial to gain a comprehensive understanding of the mechanisms underlying salt tolerance in plants and to identify potential avenues for enhancing the salt tolerance of cotton. The emergence of marker-assisted selection, in conjunction with next-generation sequencing technologies, has streamlined cotton breeding efforts. This review begins by providing an overview of the causes of salt stress in cotton, as well as the underlying theory of salt tolerance. Subsequently, it summarizes the breeding methods that utilize marker-assisted selection, genomic selection, and techniques for identifying elite salt-tolerant markers in wild species or mutated materials. Finally, novel cotton breeding possibilities based on the approaches stated above are presented and debated.

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“…In addition, a comprehensive review of molecular markers, marker-assisted selection (MAS) and marker-assisted backcross (MAB) breeding have been presented recently [44]. Cleaved amplified polymorphic sequences (CAPS) and derived-CAPS (dCAPS) markers obtained from the genes of interest are becoming increasingly valuable markers in molecular breeding of crops along with SNP markers.…”

Section: Mapping For Fiber-related Traits In Cottonmentioning

confidence: 99%

Recent Developments in Fiber Genomics of Tetraploid Cotton Species

Ayubov¹,

Abdurakhmonov²,

Sripathi³

et al. 2018

Past, Present and Future Trends in Cotton Breeding

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Cotton (Gossypium spp.) produces naturally soft, single-celled trichomes as fiber on the seed coat supplying the main source of natural raw material for the textile industry. It is economically considered as one of the most leading cash crops in the world and evolutionarily very important as a model system for detailed scientific investigations. Cotton production is going through a big transition stage such as losing the market share in competition with the synthetic fibers, high popularity of Bt and herbicide resistance genes in cotton cultivars, and the recent shift of fiber demands to meet the standard fiber quality due to change of textile technologies to produce high superior quality of fibers in the global market. Recently, next-generation sequencing technologies through highthroughput sequencing at greatly reduced costs provided opportunities to sequence the diploid and tetraploid cotton genomes. With the availability of large volume of literatures on molecular mapping, new genomic resources, characterization of cotton genomes, discoveries of many novel genes, regulatory elements including small and microRNAs and new genetic tools such as gene silencing or gene editing technique for genome manipulation, this report attempted to provide the readers a comprehensive review on the recent advances of cotton fiber genomics research.

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Molecular Breeding of Cotton

Cited by 8 publications

References 193 publications

Genetic diversity, linkage disequilibrium, and association mapping analyses of Gossypium barbadense L. germplasm

Genetic diversity, linkage disequilibrium, and association mapping analyses of Gossypium barbadense L. germplasm

Genomic Dynamics and Functional Insights under Salt Stress in Gossypium hirsutum L.

Recent Developments in Fiber Genomics of Tetraploid Cotton Species

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