Abstract
ABSTRACT Adaptability of soybean [ Glycine max (L.) Merr.] to a wide range of latitudes is attributed to the natural variation in the major genes and quantitative trait loci (QTL) that control flowering time and maturity. Identification of novel genes and understanding their molecular basis is critical to improving soybean productivity. We identified a new locus conditioning days to flowering and maturity that was detected in hybrid progeny between cultivated and wild soybeans. A backcross was made between the recurrent parent Tokei 780 and two early‐flowering recombinant inbred lines (RILs; from the cross Tokei 780 × Hidaka 4, a wild soybean accession, all of which possessed an identical genotype at the major four maturity loci, E1 to E4 ). The segregation patterns observed in the F 2 and F 3 progeny derived from the two crosses revealed that early‐flowering was controlled by a single dominant gene. The gene was fine‐mapped to a 245‐kb interval between markers M5 and M7 on Gm16. A tagging marker ID1 was significantly associated with the variation in days to flowering (0.82, p < 0.01) and maturity (0.76, p < 0.01) in the F 2 population. The new early‐flowering gene and its tagging marker are very useful for molecular breeding towards early maturity and stable productivity of soybean under high‐latitude environments. The gene symbol E9e9 has been assigned. E9E9 results in early maturity and e9e9 results in late maturity.
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Claims 9
Claim · model-written summary
A new locus conditioning days to flowering and maturity was found in cultivated and wild soybean progeny.
- Taxon
- soybeans
Glycine maxe0 - Outcome
- new locus conditioning days to flowering and maturitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“We identified a new locus conditioning days to flowering and maturity that was detected in hybrid progeny between cultivated and wild soybeans.”
Claim · model-written summary
Segregation showed early flowering controlled by one dominant gene.
- Taxon
- SoybeanGlycine maxt0
- Outcome
- early‐flowering was controlled by a single dominant genee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The segregation patterns observed in the F 2 and F 3 progeny derived from the two crosses revealed that early‐flowering was controlled by a single dominant gene.”
t0“Soybean”
Claim · model-written summary
The gene was mapped to a 245 kb interval between M5 and M7 on Gm16.
- Taxon
- SoybeanGlycine maxt0
- Gene
- Gm16e0
- Outcome
- fine‐mappede0
- Value
- 245‐kbe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The gene was fine‐mapped to a 245‐kb interval between markers M5 and M7 on Gm16.”
t0“Soybean”
Claim · model-written summary
ID1 was significantly associated with flowering time variation in F2 progeny.
- Taxon
- SoybeanGlycine maxt0
- Gene
- ID1e0
- Outcome
- variation in days to floweringe0
- Value
- 0.82e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A tagging marker ID1 was significantly associated with the variation in days to flowering (0.82, p < 0.01) and maturity (0.76, p < 0.01) in the F 2 population.”
t0“Soybean”
Claim · model-written summary
ID1 was significantly associated with maturity variation in F2 progeny.
- Taxon
- SoybeanGlycine maxt0
- Gene
- ID1e0
- Outcome
- maturitye0
- Value
- 0.76e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A tagging marker ID1 was significantly associated with the variation in days to flowering (0.82, p < 0.01) and maturity (0.76, p < 0.01) in the F 2 population.”
t0“Soybean”
Claim · model-written summary
The new gene was assigned the symbol E9e9.
- Taxon
- SoybeanGlycine maxt0
- Gene
- E9e9e0
- Outcome
- gene symbol E9e9e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The gene symbol E9e9 has been assigned.”
t0“Soybean”
Claim · model-written summary
E9E9 produces early maturity.
- Taxon
- SoybeanGlycine maxt0
- Gene
- E9E9e0
- Outcome
- early maturitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“E9E9 results in early maturity and e9e9 results in late maturity.”
t0“Soybean”
Claim · model-written summary
e9e9 produces late maturity.
- Taxon
- SoybeanGlycine maxt0
- Gene
- e9e9e0
- Outcome
- late maturitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“E9E9 results in early maturity and e9e9 results in late maturity.”
t0“Soybean”
Claim · model-written summary
The authors consider the gene and ID1 useful for breeding early maturity and stable productivity at high latitudes.
- Taxon
- soybeanGlycine maxe0
- Outcome
- molecular breeding towards early maturity and stable productivitye0
- Qualifier
- under high‐latitude environmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The new early‐flowering gene and its tagging marker are very useful for molecular breeding towards early maturity and stable productivity of soybean under high‐latitude environments.”