Wheat landrace genome diversity
| العنوان: | Wheat landrace genome diversity |
|---|---|
| المؤلفون: | Amanda J. Burridge, Alexandra M. Allen, Simon Griffiths, Claire West, Keith J. Edwards, Simon Orford, Caiyun Yang, Luzie U. Wingen, Sarah Collier, Julie King, Michelle Leverington-Waite, Richard Goram |
| المصدر: | Genetics Wingen, L U, West, C, Leverington-Waite, M, Collier, S, Orford, S, Goram, R, Yang, C, King, J, Allen, A M, Burridge, A, Edwards, K J & Griffiths, S 2017, ' Wheat Landrace Genome Diversity ', Genetics, vol. 205, no. 4, pp. 1657-1676 . https://doi.org/10.1534/genetics.116.194688Test |
| بيانات النشر: | Genetics Society of America, 2017. |
| سنة النشر: | 2017 |
| مصطلحات موضوعية: | 0106 biological sciences, 0301 basic medicine, Nested association mapping, recombination QTL, Genetic Linkage, Segregation distortion, Quantitative Trait Loci, marker order, translocation, Translocation, Investigations, Quantitative trait locus, Biology, 01 natural sciences, Genome, Evolution, Molecular, Marker order, 03 medical and health sciences, Genetics, nested association mapping, Plant breeding, Domestication, Triticum, Synteny, Genetics of Complex Traits, Recombination QTL, Genetic diversity, Polymorphism, Genetic, digestive, oral, and skin physiology, food and beverages, segregation distortion, Map distance, 030104 developmental biology, Trait, map distance, Genome, Plant, 010606 plant biology & botany |
| الوصف: | Understanding the genomic complexity of bread wheat is important for unraveling domestication processes, environmental adaptation, and for future of... Understanding the genomic complexity of bread wheat (Triticum aestivum L.) is a cornerstone in the quest to unravel the processes of domestication and the following adaptation of domesticated wheat to a wide variety of environments across the globe. Additionally, it is of importance for future improvement of the crop, particularly in the light of climate change. Focusing on the adaptation after domestication, a nested association mapping (NAM) panel of 60 segregating biparental populations was developed, mainly involving landrace accessions from the core set of the Watkins hexaploid wheat collection optimized for genetic diversity. A modern spring elite variety, “Paragon,” was used as common reference parent. Genetic maps were constructed following identical rules to make them comparable. In total, 1611 linkage groups were identified, based on recombination from an estimated 126,300 crossover events over the whole NAM panel. A consensus map, named landrace consensus map (LRC), was constructed and contained 2498 genetic loci. These newly developed genetics tools were used to investigate the rules underlying genome fluidity or rigidity, e.g., by comparing marker distances and marker orders. In general, marker order was highly correlated, which provides support for strong synteny between bread wheat accessions. However, many exceptional cases of incongruent linkage groups and increased marker distances were also found. Segregation distortion was detected for many markers, sometimes as hot spots present in different populations. Furthermore, evidence for translocations in at least 36 of the maps was found. These translocations fell, in general, into many different translocation classes, but a few translocation classes were found in several accessions, the most frequent one being the well-known T5B:7B translocation. Loci involved in recombination rate, which is an interesting trait for plant breeding, were identified by QTL analyses using the crossover counts as a trait. In total, 114 significant QTL were detected, nearly half of them with increasing effect from the nonreference parents. |
| وصف الملف: | PDF; application/pdf |
| اللغة: | English |
| تدمد: | 0016-6731 1943-2631 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::26ed6734edaf2de89dab0b8c722c1a54Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....26ed6734edaf2de89dab0b8c722c1a54 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 00166731 19432631 |
|---|