Abstract
The marker regression and the interval mapping methods were used for the detection of qualitative trait loci (QTL) in Arabidopsis thaliana in a cross between early flowering ecotypes Landsberg erecta and Columbia. The interval mapping method employs pairs of neighbouring markers to obtain maximum linkage information about the presence of a QTL within the enclosed segment of the chromosome, whereas the marker regression approach fits a model to all the marker means on a given chromosome simultaneously and obtains significance tests by simulation. The interval mapping method detected 22 QTL in seven traits and the marker regression method detected 22 QTL in six traits. The two methods detected sixteen QTL at similar positions of the Arabidopsis chromosomes and QTL for similar traits were localised to similar regions of the chromosomes and they showed similar mode of additive effect. This suggested that the two methods are similar in their QTL detection even though they employed different significant levels.
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Claims 5
Claim · model-written summary
Interval mapping detected 22 QTL across seven traits.
- Taxon
- Arabidopsis thaliana
Arabidopsis thalianae1 - Outcome
- QTLe0
- Value
- 22 QTLe0
- Qualifier
- seven traitse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The interval mapping method detected 22 QTL in seven traits”
e1“Arabidopsis thaliana”
Claim · model-written summary
Marker regression detected 22 QTL across six traits.
- Taxon
- Arabidopsis thalianaArabidopsis thalianae1
- Outcome
- QTLe0
- Value
- 22 QTLe0
- Qualifier
- six traitse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the marker regression method detected 22 QTL in six traits”
e1“Arabidopsis thaliana”
Claim · model-written summary
The two methods detected sixteen QTL at similar chromosomal positions.
- Taxon
- ArabidopsisArabidopsise0
- Outcome
- QTL at similar positionse0
- Value
- sixteen QTLe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The two methods detected sixteen QTL at similar positions of the Arabidopsis chromosomes”
Claim · model-written summary
QTL for similar traits localized to similar chromosome regions.
- Taxon
- ArabidopsisArabidopsise1
- Outcome
- QTL for similar traitse0
- Direction
- similar regionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“QTL for similar traits were localised to similar regions of the chromosomes”
e1“Arabidopsis chromosomes”
Claim · model-written summary
QTL for similar traits showed similar additive effects.
- Taxon
- ArabidopsisArabidopsise2
- Outcome
- mode of additive effecte0
- Direction
- similare0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“they showed similar mode of additive effect”
e1“QTL for similar traits”
e2“Arabidopsis chromosomes”