Quantitative trait loci detection in Bulgarian cotton mutant segregating population
Identification of quantitative trait loci (QTL) linked to fiber quality is of primary interest in cotton breeding. As Bulgarian cotton varieties belong to a specific group (proles Bulgaricum) they are even more difficult for cross-breeding into them such quality characteristics. Therefore a...
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| Format: | Article |
| Language: | English |
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Serbian Genetics Society
2019-01-01
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| Series: | Genetika |
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| Online Access: | http://www.doiserbia.nb.rs/img/doi/0534-0012/2019/0534-00121901323B.pdf |
| Summary: | Identification of quantitative trait loci (QTL) linked to fiber quality is of
primary interest in cotton breeding. As Bulgarian cotton varieties belong to
a specific group (proles Bulgaricum) they are even more difficult for
cross-breeding into them such quality characteristics. Therefore a
segregating mutant population has been developed from the standard Bulgarian
variety ‘Chirpan 603’ by applying seed gamma irradiation. M4 and M5
generations were used for identification of QTLs related to fiber quality
characteristics. SSR markers developed in interspecific crosses and further
confirmed in intraspecific crosses, together with in-house developed ISSR
markers were used for association mapping of QTLs for fiber quality. Fiber
strength, length, uniformity, micronaire and elongation were the main
studied characteristics. QTLs with major effects on these traits identified
in M4 and M5 were confirmed in M6 generation. Further ones were identified
and used for map saturation and linkage group confirmation. |
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| ISSN: | 0534-0012 1820-6069 |