Identification and validation of a major QTL for salt tolerance in soybean
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Date
2011-06-27
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ISI Journal
Impact factor: 1.626 (Year: 2011)
Citation
Aladdin Hamwieh, Do Duc Tuyen, H. Cong, Eduardo R. Benitez, Ryoji Takahashi, D. H. Xu. (27/6/2011). Identification and validation of a major QTL for salt tolerance in soybean. Euphytica, 179 (3), pp. 451-459.
Abstract
To identify quantitative trait loci (QTLs)
conditioning salt tolerance in soybean (Glycine max
(L.) Merr.), two recombinant inbred line (RIL)
populations derived from crosses of FT-Abyara 9
C01 and Jin dou No. 6 9 0197 were used in this
study. The FT-Abyara 9 C01 population consisted of
96 F7 RILs, and the Jin dou No. 6 9 0197 population
included 81 F6 RILs. The salt tolerant parents
FT-Abyara and Jin dou No. 6 were originally from
Brazil and China, respectively. The QTL analysis
identified a major salt-tolerant QTL in molecular
linkage group N, which accounted for 44.0 and
47.1% of the total variation for salt tolerance, in the
two populations. In the FT-Abyara 9 C01 population,
three RILs were found to be heterozygous around the
detected QTL region. By selfing the three residual
heterozygous lines, three sets of near isogenic lines
(NILs) for salt tolerance were developed. An evaluation
of salt tolerance of the NILs revealed that all the
lines with FT-Abyara chromosome segment at the
QTL region showed significantly higher salt tolerance
than the lines without the FT-Abyara chromosome
segment. Results of the NILs validated the salt
tolerance QTL detected in the RIL populations.
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Hamwieh, Aladdin https://orcid.org/0000-0001-6060-5560