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Mol Genet Genomics. 2018 Aug;293(4):945-955. doi: 10.1007/s00438-018-1434-5. Epub 2018 Mar 27.

Ten alien chromosome additions of Gossypium hirsutum-Gossypium bickii developed by integrative uses of GISH and species-specific SSR markers.

Author information

1
State Key Laboratory of Crop Genetics and Germplasm Enhancement, MOE Hybrid Cotton R&D Engineering Research Center, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, People's Republic of China.
2
Key Laboratory of Cotton Breeding and Cultivation in Huang-Huai-Hai Plain, Ministry of Agriculture, Cotton Research Center of Shandong Academy of Agricultural Sciences, Jinan, 250100, Shandong, People's Republic of China.
3
State Key Laboratory of Crop Genetics and Germplasm Enhancement, MOE Hybrid Cotton R&D Engineering Research Center, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, People's Republic of China. baoliangzhou@njau.edu.cn.

Abstract

Gossypium bickii: (2n = 26, G1G1), a wild diploid cotton, carries many favourable traits. However, these favourable traits cannot be directly transferred into G. hirsutum (2n = 52, AADD) cultivars due to the differences in genomes. Monosomic alien addition lines (MAALs) are considered an invaluable tool for the introgression of genes of interest from wild relatives into cultivated crops. In this study, the G. hirsutum-G. bickii amphidiploid (2n = 78, AADDG1G1) was backcrossed with G. hirsutum to develop alien additions containing individual G. bickii chromosomes in a G. hirsutum background. Genomic in situ hybridization was employed to detect the number of alien chromosomes added to the backcross progenies. A total of 183 G. bickii-specific DNA markers were developed to discriminate the identities of the G. bickii chromosomes added to G. hirsutum and assess the alien chromosome transmissibility. Chromosomes 4Gb and 13Gb showed the highest transmissibility, while chromosomes 1Gb, 7Gb and 11Gb showed the lowest. Ten of the 13 possible G. hirsutum-G. bickii MAALs were isolated and characterized, which will lay the foundation for transferring resistance genes of G. bickii into G. hirsutum, as well as for gene assignment, physical mapping, and selective isolation and mapping of cDNAs for particular G. bickii chromosomes. The strategies of how to use MAALs to develop varieties with the trait of interest from wild species (such as glanded plant-glandless seed) were proposed and discussed.

KEYWORDS:

Genomic in situ hybridization (GISH); Gossypium hirsutum; Monosomic alien addition line (MAAL); Simple sequence repeat (SSR); Wild cotton

PMID:
29589159
DOI:
10.1007/s00438-018-1434-5
[Indexed for MEDLINE]

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