Abstract
Abstract Background The transition from vegetative to reproductive growth is a key factor in yield maximization. Sesame (Sesamum indicum ), an indeterminate short-day oilseed crop, is rapidly being introduced into new cultivation areas. Thus, decoding its flowering mechanism is necessary to facilitate adaptation to environmental conditions. In the current study, we uncover the effect of day-length on flowering and yield components using F $$_2$$ 2 populations segregating for previously identified quantitative trait loci (Si_DTF QTL) confirming these traits. Results Generally, day-length affected all phenotypic traits, with short-day preceding days to flowering and reducing yield components. Interestingly, the average days to flowering required for yield maximization was 50 to 55 days, regardless of day-length. In addition, we found that Si_DTF QTL is more associated with seed-yield and yield components than with days to flowering. A bulk-segregation analysis was applied to identify additional QTL differing in allele frequencies between early and late flowering under both day-length conditions. Candidate genes mining within the identified major QTL intervals revealed two flowering-related genes with different expression levels between the parental lines, indicating their contribution to sesame flowering regulation. Conclusions Our findings demonstrate the essential role of flowering date on yield components and will serve as a basis for future sesame breeding.
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Claims 5
Claim · model-written summary
Short days advanced flowering.
- Taxon
- Sesame
Sesamum indicumt0 - Treatment
- short-daye0
- Outcome
- days to floweringe0
- Direction
- precedinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“day-length affected all phenotypic traits, with short-day preceding days to flowering and reducing yield components”
t0“Sesame”
Claim · model-written summary
Short days reduced yield components.
- Taxon
- SesameSesamum indicumt0
- Treatment
- short-daye0
- Outcome
- yield componentse0
- Direction
- reducinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“short-day preceding days to flowering and reducing yield components”
t0“Sesame”
Claim · model-written summary
Yield maximization was associated with flowering at 50 to 55 days regardless of day length.
- Taxon
- SesameSesamum indicumt0
- Organ / stage
- days to floweringe0
- Outcome
- yield maximizatione0
- Value
- 50 to 55 dayse0
- Qualifier
- regardless of day-lengthe0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the average days to flowering required for yield maximization was 50 to 55 days, regardless of day-length”
t0“Sesame”
Claim · model-written summary
Si_DTF QTL was more associated with seed yield and yield components than with flowering time.
- Taxon
- SesameSesamum indicumt0
- Gene
- Si_DTF QTLe0
- Outcome
- seed-yield and yield componentse0
- Direction
- moree0
- Comparator
- days to floweringe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Si_DTF QTL is more associated with seed-yield and yield components than with days to flowering”
t0“Sesame”
Claim · model-written summary
Two flowering-related genes differed in expression between parental lines.
- Taxon
- SesameSesamum indicumt0
- Gene
- flowering-related genese0
- Outcome
- different expression levelse0
- Comparator
- parental linese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“two flowering-related genes with different expression levels between the parental lines”
t0“Sesame”
The same questions in other papers
light · yield · Sesamum indicum (sesame)Results agree
1 paper in the same direction as this paper
- negative
Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.