Abstract
To map female fertility loci efficiently in wheat, selective phenotyping and linkage disequilibrium (LD) were adopted as a combined strategy to select candidate markers. Recombination frequencies (c value) between SSR markers and supposed QTL were estimated through recessive extreme class from experiment population, and chromosome 2AS and 2DS were distinguished as the candidate chromosome area of QTL for female fertility. On the candidate chromosomes, c values between 18 markers and the supposed QTL were calculated, and their LD in the variety (line) population consisted of improved varieties and female sterile line XND126, were also investigated. Based on the loci information from c values and LD coefficients, partial linkage groups were constructed. A QTL of female fertility named taf1 was mapped on chromosome 2DS by linkage analysis on F2 population. The result implied that the nearer the marker to the QTL, the less c value and the higher LD coefficient. This suggests that the marker closely linked with QTL could be fast distinguished by selecting on lower c value and higher LD coefficient. The combination of linkage and association analysis may be an efficient strategy for mapping QTL and uncovering the genetic mechanism of female fertility in wheat.
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Claims 6
Claim · model-written summary
Chromosome 2AS and 2DS were identified as candidate regions for female fertility QTL.
- Taxon
- wheat
Triticum aestivumt0 - Gene
- chromosome 2AS and 2DSe0
- Outcome
- candidate chromosome area of QTL for female fertilitye0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“chromosome 2AS and 2DS were distinguished as the candidate chromosome area of QTL for female fertility”
t0“wheat(Triticum aestivum L.)”
Claim · model-written summary
A female fertility QTL named taf1 was mapped to chromosome 2DS.
- Taxon
- wheatTriticum aestivumt0
- Material
- F2 populatione0
- Gene
- taf1e0
- Outcome
- mapped on chromosome 2DSe0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A QTL of female fertility named taf1 was mapped on chromosome 2DS by linkage analysis on F2 population”
t0“wheat(Triticum aestivum L.)”
Claim · model-written summary
Markers closer to the QTL had lower recombination frequencies.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the nearer the marker to the QTL, the less c value”
t0“wheat(Triticum aestivum L.)”
Claim · model-written summary
Markers closer to the QTL had higher linkage disequilibrium coefficients.
- Taxon
- wheatTriticum aestivumt0
- Gene
- QTLe0
- Outcome
- LD coefficiente0
- Direction
- highere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the nearer the marker to the QTL, the less c value and the higher LD coefficient”
t0“wheat(Triticum aestivum L.)”
Claim · model-written summary
Low recombination frequency and high linkage disequilibrium may rapidly distinguish markers closely linked to a QTL.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- marker closely linked with QTL could be fast distinguishede0
- Comparator
- lower c value and higher LD coefficiente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the marker closely linked with QTL could be fast distinguished by selecting on lower c value and higher LD coefficient”
t0“wheat(Triticum aestivum L.)”
Claim · model-written summary
Combining linkage and association analysis may efficiently map QTL and uncover the genetics of wheat female fertility.
- Taxon
- wheatTriticum aestivume0
- Outcome
- efficient strategy for mapping QTLe0
- Qualifier
- maye0
- Comparator
- linkage and association analysise0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The combination of linkage and association analysis may be an efficient strategy for mapping QTL and uncovering the genetic mechanism of female fertility in wheat”