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Genetic dissection of the relationships between grain yield components by genome-wide association mapping in a collection of tetraploid wheats.

Published on Jan 11, 2018in PLOS ONE2.776
· DOI :10.1371/journal.pone.0190162
Giacomo Mangini14
Estimated H-index: 14
,
Agata Gadaleta21
Estimated H-index: 21
+ 8 AuthorsAntonio Blanco33
Estimated H-index: 33
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  • Citations (12)
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References80
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#1Fa Cui (CAS: Chinese Academy of Sciences)H-Index: 12
#2Na Zhang (CAS: Chinese Academy of Sciences)H-Index: 9
Last. Junming Li (CAS: Chinese Academy of Sciences)H-Index: 7
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In crop plants, a high-density genetic linkage map is essential for both genetic and genomic researches. The complexity and the large size of wheat genome have hampered the acquisition of a high-resolution genetic map. In this study, we report a high-density genetic map based on an individual mapping population using the Affymetrix Wheat660K single-nucleotide polymorphism (SNP) array as a probe in hexaploid wheat. The resultant genetic map consisted of 119 566 loci spanning 4424.4 cM, and 119 00...
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Key message Current development of advanced biotechnology tools allows us to characterize the role of key genes in plant productivity. The implementation of this knowledge in breeding strategies might accelerate the progress in obtaining high-yielding cultivars.
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#1Hongxia Zhang (NWAFU: Northwest A&F University)H-Index: 2
#2Fangning Zhang (NWAFU: Northwest A&F University)H-Index: 2
Last. Lingjian Ma (NWAFU: Northwest A&F University)H-Index: 2
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Association mapping is a method to identify associations between target traits and genetic markers based on linkage disequilibrium (LD) of a quantitative trait locus. Synthetic hexaploid wheat (SHW) is derived from a cross between Triticum durum Desf. and Aegilops tauschii Coss. that enhances genetic diversity and broadens breeding resources. In this study, phenotypic diversity in 110 wheat accessions (86 SHW germplasm specimens and 24 conventional wheat varieties) was evaluated quantitatively f...
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#1Zifeng Guo (Leibniz Association)H-Index: 6
#2Dijun Chen (Leibniz Association)H-Index: 22
Last. Thorsten Schnurbusch (Leibniz Association)H-Index: 28
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Summary Increasing grain yield is still the main target of wheat breeding; yet today's wheat plants utilize less than half of their yield potential. Owing to the difficulty of determining grain yield potential in a large population, few genetic factors regulating floret fertility (i.e. the difference between grain yield potential and grain number) have been reported to date. In this study, we conducted a genome-wide association study (GWAS) by quantifying 54 traits (16 floret fertility traits an...
39 CitationsSource
#1Pasqualina Colasuonno (University of Bari)H-Index: 10
#2Maria Luisa Lozito (University of Bari)H-Index: 3
Last. Antonio Blanco (University of Bari)H-Index: 33
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In plants carotenoids play an important role in the photosynthetic process and photo-oxidative protection, and are the substrate for the synthesis of abscisic acid and strigolactones. In addition to their protective role as antioxidants and precursors of vitamin A, in wheat carotenoids are important as they influence the colour (whiteness vs. yellowness) of the grain. Understanding the genetic basis of grain yellow pigments, and identifying associated markers provide the basis for improving whea...
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#1Pankaj Kumar GuptaH-Index: 47
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In recent years, with climate change, drought stress has been witnessed in many parts of the world. In many irrigated regions also, shortage of water supply allows only limited irrigation. These conditions have an adverse effect on the productivity of many crops including cereals such as wheat. Therefore, genetics of drought/water stress tolerance in different crops has become a priority area of research. This research mainly involves use of quantitative trait locus (QTL) analysis (involving bot...
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#1Angelica Giancaspro (University of Bari)H-Index: 13
#2S. L. Giove (University of Bari)H-Index: 11
Last. Agata Gadaleta (University of Bari)H-Index: 21
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Fusarium head blight (scab) is one of the most widespread and damaging diseases of wheat, causing grain yield and quality losses and production of harmful mycotoxins. Development of resistant varieties is hampered by lack of effective resistance sources in the tetraploid wheat primary gene pool. Here we dissected the genetic basis of resistance in a new durum wheat (Triticum turgidum ssp. durum) Recombinant Inbred Lines population obtained by crossing an hexaploid resistant line and a durum susc...
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#1Han Zhang (Ministry of Science and Technology)H-Index: 1
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Abstract Spike number per m 2 (SN), kernel number per spike (KNPS) and thousand-kernel weight (TKW) are the three main components determining wheat ( Triticum aestivum L.) yield. To evaluate the relationships among them a doubled haploid (DH) population consisting of 168 lines grown at three locations for three years was analyzed by unconditional and conditional QTL mapping. Thirty-three unconditional QTL and fifty-nine conditional QTL were detected. Among them, two QTL ( QSN-DH-2B and QSN-DH-3A...
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#1Lin MaH-Index: 2
#2Tian LiH-Index: 7
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Summary Grain size is a dominant component of grain weight in cereals. Earlier studies have shown that OsGS5 plays a major role in regulating both grain size and weight in rice via promotion of cell division. In this study, we isolated TaGS5 homoeologues in wheat and mapped them on chromosomes 3A, 3B and 3D. Temporal and spatial expression analysis showed that TaGS5 homoeologues were preferentially expressed in young spikes and developing grains. Two alleles of TaGS5-3A, TaGS5-3A-T and TaGS5-3A-...
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Non-starch polysaccharides (NSPs) have many health benefits, including immunomodulatory activity, lowering serum cholesterol, a faecal bulking effect, enhanced absorption of certain minerals, prebiotic effects and the amelioration of type II diabetes. The principal components of the NSP in cereal grains are (1,3;1,4)-β-glucans and arabinoxylans. Although (1,3;1,4)-β-glucan (hereafter called β-glucan) is not the most representative component of wheat cell walls, it is one of the most important ty...
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This brief historical review focuses on durum wheat domestication and breeding in the Mediterranean region. Important milestones in durum wheat breeding programs across the countries of the Mediterranean basin before and after the Green Revolution are discussed. Additionally, the main achievements of the classical breeding methodology are presented using a comparison of old and new cultivars. Furthermore, current breeding goals and challenges are analyzed. An overview of classical breeding metho...
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Increasing kernel weight is a major driven force for high yield breeding. Dissecting the genetic basis of kernel traits and their response to nitrogen are essential for improving wheat yield and nitrogen use efficiency (NUE). In this study, genome-wide association studies were carried out based on Wheat55K SNP array genotyping data of 132 common wheat accessions. And phenotype values of four kernel traits were acquired from eight environments across both high nitrogen (HN) and low nitrogen (LN) ...
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Final grain production and quality in durum wheat are affected by biotic and abiotic stresses. The association mapping (AM) approach is useful for dissecting the genetic control of quantitative traits, with the aim of increasing final wheat production under stress conditions. In this study, we used AM analyses to detect quantitative trait loci (QTL) underlying agronomic and quality traits in a collection of 294 elite durum wheat lines from CIMMYT (International Maize and Wheat Improvement Center...
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Uncovering the genetic basis of key agronomic traits, and particularly of drought tolerance, addresses an important priority for durum wheat improvement. Here, a genome-wide association study (GWAS) in 493 durum wheat accessions representing a worldwide collection was employed to address the genetic basis of 17 agronomically important traits and a drought wilting score. Using a linear mixed model with 4 inferred subpopulations and a kinship matrix, we identified 90 marker-trait-associations (MTA...
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