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Research Project: Developing Genomic and Genetic Tools for Exploiting Cotton Genetic Variation

Location: Crop Germplasm Research

Title: Recent developments and applications of cotton genomic resources for fiber improvement

item Yu, John

Submitted to: World Cotton Research Conference Proceedings
Publication Type: Abstract Only
Publication Acceptance Date: 4/10/2016
Publication Date: 5/1/2016
Citation: Yu, J. 2016. Recent developments and applications of cotton genomic resources for fiber improvement. World Cotton Research Conference Proceedings, May 2-6, 2016, Goiania, Goias, Brazil. p. 67.

Interpretive Summary:

Technical Abstract: Cotton farmers have experienced a plateau in fiber yield, fiber quality, and other agronomic traits since the late 20th century. Most commercial cotton cultivars lack genetic diversity, making them vulnerable to natural threats. To date, much of the genetic potential of cotton has not been exploited, due to the large and complex genomes of the Gossypium genus. Recent assembly and annotation of the Upland cotton genetic standard TM-1 (AD1), following upon the sequencing of its diploid progenitors (A2 and D5), creates unique opportunities to effectively unlock the genetic potential otherwise buried in all Gossypium species. Decoding the allotetraploid genome (AtDt) and its sub-genomes (At and Dt) provides molecular insights into cotton evolution and genomic resources for fiber improvement. With the possibility of selection for fiber traits discovered in the At sub-genome, the new knowledge and advanced genomic tools will help researchers and breeders develop cotton cultivars with better fiber qualities, higher fiber yields, and more tolerance to biotic and abiotic stresses to meet requirements of the cotton farmers in the 21st century.