Construction of three half-sib SSR linkage maps derived from overwintering cultivated rice and segregation distortion loci mapping
| Autor: | Xiaojian Qin, Hanma Zhang, Chao Yan, Wenbin Nan, Yongshu Liang |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Genetic Markers
0106 biological sciences 0301 basic medicine Genotype Perennial plant Genetic Linkage Quantitative Trait Loci Quantitative trait locus 01 natural sciences Japonica 03 medical and health sciences Genetic linkage Distortion Genetics Plant breeding Molecular Biology Overwintering Linkage (software) biology Chromosome Mapping food and beverages Oryza General Medicine biology.organism_classification 030104 developmental biology Evolutionary biology 010606 plant biology & botany Biotechnology |
| Zdroj: | Genome. 63:239-251 |
| ISSN: | 1480-3321 0831-2796 |
| DOI: | 10.1139/gen-2019-0160 |
| Popis: | Segregation distortion is a common phenomenon that has been observed in genetics and plant breeding; however, the mechanism of segregation distortion is unknown. In the present study, three half-sib F2populations derived from three japonica overwinter (perennial) rice varieties (W1, W2, and W3) crossed to the indica rice variety Minghui725 (MH725) were developed to construct three half-sib linkage maps. We established linkage map lengths of 2032.8, 2317.4, and 2108.7 cM with average intervals of 20.1, 20.5, and 19.7 cM using 101, 113, and 107 SSR markers in W1/MH725, W2/MH725, and W3/MH725, respectively. Discrepancies in marker order and genetic linkage distance occurred in the three half-sib linkage maps due to segregation distortion. A total of 88 markers exhibited segregation distortion across the three linkage maps at P < 0.01 level, 42 segregation distortion loci (SDLs) were detected across the three half-sib populations and exhibited variable LOD value that ranged from 3.2 (SDL2f) to 30.1 (SDL5d), and 13 of the 42 SDLs were repeatedly located at the same chromosomal regions of the previously published hybrid sterility quantitative trait loci. Data from this study provide an extensive archive for investigating the genetic characteristic of overwintering cultivated rice and the future exploration and innovation of overwintering rice breeding. |
| Databáze: | OpenAIRE |
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