Wheat polymorphism

Durum wheat (Triticum turgidum L.) is a cereal crop widely grown in the Mediterranean regions; the amber grain is mainly used for the production of pasta, couscous and typical breads. Single nucleotide polymorphism (SNP) detection technologies and high-throughput mutation induction represent a new challenge in wheat breeding to identify allelic variation in large populations.

10p vinarcissa 21-03-2023 5 1   Download

The usefulness of such SNP panels for studying wheat evolution and domestication has not yet been fully explored and ascertainment bias issues can potentially affect their applicability when studying landraces and tetraploid ancestors of bread wheat.

13p vinarcissa 21-03-2023 5 1   Download

Copy number variation was found to be a frequent type of DNA polymorphism in the human genome often associated with diseases but its importance in crops and the effects on agronomic traits are still largely unknown.

8p vinarcissa 21-03-2023 3 1   Download

Emerging wheat stem rust races have become a major threat to global wheat production. Finding additional loci responsible for resistance to these races and incorporating them into currently cultivated varieties is the most economic and environmentally sound strategy to combat this problem.

15p vihagrid 30-01-2023 9 3   Download

Aluminum (Al) toxicity is a serious factor restricting crop productivity in acid soil, and Al is the major cause of phytotoxicity. However, the role of Al toxicity in interprimer binding site (iPBS) polymorphism, genomic instability, and DNA methylation has not been fully investigated. In the current study, the effects of different Al concentrations on iPBS polymorphism, genomic instability, and DNA methylation were investigated in seedlings of three wheat cultivars: Haymana 79, Kılçıksız, and Bezostaja 1.

11p tudichquannguyet 29-11-2021 9 1   Download

Durum wheat (Triticum turgidum L. var durum) is tetraploid wheat (AABB); it is the main source of semolina and other pasta products. Grain yield in wheat is quantitatively inherited and influenced by the environment. The genetic map construction constitutes the essential step in identifying quantitative trait loci (QTLs) linked to complex traits, such as grain yield. The study aimed to construct a genetic linkage map of two parents that are widely grown durum cultivars (Lahn and Cham1) in the Mediterranean basin, which is characterized by varying climate changes.

14p thiencuuchu 27-11-2021 11 1   Download

Molecular characterization is important for efficient utilization of germplasm and development of improved varieties. In the present study, we investigated the genetic purity, relatedness and population structure of 265 maize inbred lines from the Ethiopian Institute of Agricultural Research (EIAR), the International Maize and Wheat Improvement Centre (CIMMYT) and the International Institute of Tropical Agriculture (IITA) using 220,878 single nucleotide polymorphic (SNP) markers obtained using genotyping by sequencing (GBS).

11p vilarryellison 29-10-2021 7 1   Download

Synthetic hexaploid wheat (SHW) is a reconstitution of hexaploid wheat from its progenitors (Triticum turgidum ssp. durum L.; AABB x Aegilops tauschii Coss.; DD) and has novel sources of genetic diversity for broadening the genetic base of elite bread wheat (BW) germplasm (T. aestivum L). Understanding the diversity and population structure of SHWs will facilitate their use in wheat breeding programs.

12p vitzuyu2711 29-09-2021 14 1   Download

Triticum and Aegilops diploid species have morphological and genetic diversity and are crucial genetic resources for wheat breeding. According to the chromosomal pairing-affinity of these species, their genome nomenclatures have been defined.

11p vijeeni2711 24-07-2021 14 0   Download

The genetic diversity and gene pool characteristics must be clarified for efficient genome-wide association studies, genomic selection, and hybrid breeding. The aim of this study was to evaluate the genetic structure of 509 wheat accessions representing registered varieties and advanced breeding lines via the highdensity genotyping-by-sequencing approach.

17p vilichoo2711 25-06-2021 16 1   Download

Identifying the loci and dissecting the genetic architecture underlying wheat yield- and qualityrelated traits are essential for wheat breeding. A genome-wide association study was conducted using a highdensity 90 K SNP array to analyze the yield- and quality-related traits of 543 bread wheat varieties.

11p vijichea2711 28-05-2021 6 1   Download

Anemia is thought to affect up to 1.6 billion people worldwide. One of the major contributors to low iron (Fe) absorption is a higher proportion of cereals compared to meats and pulse crops in people’s diets.

13p vijichea2711 28-05-2021 7 1   Download

Stripe rust (yellow rust) is a significant disease for bread wheat (Triticum aestivum L.) worldwide. A genome-wide association study was conducted on 240 Chinese wheat cultivars and elite lines genotyped with the wheat 90 K single nucleotide polymorphism (SNP) arrays to decipher the genetic architecture of stripe rust resistance in Chinese germplasm.

13p vijichea2711 28-05-2021 6 1   Download

Wheat blast, caused by Magnaporthe oryzae Triticum (MoT) pathotype, is a global threat to wheat (Triticum aestivum L.) production. Few blast resistance (R) genes have been identified to date, therefore assessing potential sources of resistance in wheat is important.

15p vijichea2711 28-05-2021 9 1   Download

Food security is an issue that has come under renewed scrutiny amidst concerns that substantial yield increases in cereal crops are required to feed the world’s booming population. Wheat is of fundamental importance in this regard being one of the three most important crops for both human consumption and livestock feed; however, increase in crop yields have not kept pace with the demands of a growing world population.

6p viwyoming2711 16-12-2020 11 1   Download

The increase in human populations around the world has put pressure on resources, and as a consequence food security has become an important challenge for the 21st century. Wheat (Triticum aestivum) is one of the most important crops in human and livestock diets, and the development of wheat varieties that produce higher yields, combined with increased resistance to pests and resilience to changes in climate, has meant that wheat breeding has become an important focus of scientific research.

9p vioklahoma2711 19-11-2020 13 1   Download

Discovering single nucleotide polymorphisms (SNPs) from agriculture crop genome sequences has been a widely used strategy for developing genetic markers for several applications including marker-assisted breeding, population diversity studies for eco-geographical adaption, genotyping crop germplasm collections, and others.

16p vicolorado2711 22-10-2020 11 1   Download

Earliness, an adaptive trait and factor of variation for agronomic characters, is a major trait in plant breeding. In present investigation, the experimental material comprised of P1, P2, F1, F2 and F2:3 generations of wheat crossDL-788-2 X GW-322 for earliness related traits with objective of linkage and QTL mapping in bread wheat. Out of 200 SSR markers screened for parental polymorphism for earliness related traits, only 11% of SSR markers showed good polymorphism between two parental lines.

11p trinhthamhodang1215 23-09-2020 9 1   Download

The SSR technique was used to reveal the genetic diversity among wheat (Triticum aestivum) and its wild relatives and secondly to test the hybridity of wheat (Triticum aestivum) F1s. All the thirteen SSR primers showed 100% polymorphism and except one, all the primers generated unique bands, so these primers can be used for genotype identification. Also four primers showed heterozygous nature of F1s by giving two bands, one from each parent at a particular locus, so these markers can be used for screening purpose also.

14p caygaocaolon6 30-07-2020 15 1   Download

Assessment of genotype diversity was studied using released and in pipeline genotypes of wheat, of these 22 were released and 14 were in pipeline . Genetic diversity among 36 wheat genotypes was studied using Random amplified polymorphic DNA (RAPD) analysis. 21 RAPD primers (RPI primers) were used for screening 36 wheat genotypes from which 2,868 fragments were amplified. It was observed that 63.3% bands were polymorphic and 36.4% were monomorphic. The percent of polymorphic bands in banding pattern was calculated and it was highest in RPI-22 (81.3%) while lowest was recorded in RPI-2 (33.

8p chauchaungayxua6 26-06-2020 13 2   Download