源于棉花二倍体野生种异常棉的抗旱相关的SSR序列及其应用
By using distant hybridization and marker-assisted selection, a specific SSR molecular marker fragment on chromosome 8 of the abnormal cotton was replaced into upland cotton, which solved the problem of reduced drought resistance in cotton breeding, improved the drought resistance of cotton and accelerated the breeding speed, and provided fine localization and analysis of drought resistance genes.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- JIANGSU ACAD OF AGRI SCI
- Filing Date
- 2023-03-01
- Publication Date
- 2026-07-17
AI Technical Summary
The genetic diversity of cotton decreases during cultivation, leading to a weakening of its drought resistance. Existing technologies make it difficult to effectively utilize the drought-resistant gene resources of wild cotton species.
By using distant hybridization and marker-assisted selection, specific SSR molecular marker fragments on chromosome 8 of abnormal cotton are replaced into upland cotton to develop cotton varieties or lines with improved drought resistance. Specific DNA fragments are used to replace the original chromosome fragments of the recipient parent, and screening and identification are carried out in combination with SSR molecular markers and primer pairs.
It enabled early, rapid, and accurate improvement of cotton drought resistance, provided fine mapping and functional analysis of drought-resistant genes, promoted the selection efficiency and breeding speed of drought-resistant cotton breeding, and obtained cotton lines with drought-resistant introgression chromosome segments.
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