Abstract
The genetic model for maturity in soybean [ Glycine max (L.) Merr.] is a series of near‐isogenic lines, but they do not span the natural variation for early maturity. The objectives of this study were to determine if a single gene in OT98‐17 controls early maturity and if this is a new locus. A cross was made between ‘Maple Presto’ and OT98‐17, an early‐maturing Maple Presto–derived backcross line. A total of 201 F 3 progeny rows from this population and Maple Presto were grown at Ottawa, ON, in 1999. In 2000, F 4 progeny rows were grown and 150 late‐maturing and 51 early‐maturing families were observed to fit a 3:1 ratio ( n = 201, X 2 = 0.01, P = 0.90). The early‐maturing allele was transferred to a ‘Harosoy’ background, and isolines were grown from 2002 to 2006 at Ottawa, ON. The isolines were 9 and 6 d earlier maturing in Maple Presto and Harosoy backgrounds, respectively. To determine the independence of this locus, simple sequence repeat molecular markers were used to identify three candidate regions. The gene E8 specifically mapped to linkage group C1 between Sat_404 and Satt136. No other maturity gene has been mapped to this region. The two other candidate regions were both related to maturity quantitative trait loci on molecular linkage group L and may be inadvertently selected along with early maturity. The gene symbol E8e8 has been assigned by the Soybean Genetics Committee. E8E8 results in later maturity and e8e8 results in early maturity. The earliest Harosoy maturity isoline is now rated as maturity group 000.
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Claims 9
Claim · model-written summary
Soybean F4 families segregated 150 late to 51 early maturing, consistent with a 3:1 ratio.
- Taxon
- soybean
Glycine maxt0 - Outcome
- families were observed to fit a 3:1 ratioe0
- Value
- 3:1 ratioe0
- Qualifier
- 150 late‐maturing and 51 early‐maturinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In 2000, F 4 progeny rows were grown and 150 late‐maturing and 51 early‐maturing families were observed to fit a 3:1 ratio ( n = 201, X 2 = 0.01, P = 0.90)”
t0“soybean”
Claim · model-written summary
The early-maturity isoline matured 9 days earlier in the Maple Presto background.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean”
e0“The isolines were 9 and 6 d earlier maturing in Maple Presto and Harosoy backgrounds, respectively”
Claim · model-written summary
The early-maturity isoline matured 6 days earlier in the Harosoy background.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean”
e0“The isolines were 9 and 6 d earlier maturing in Maple Presto and Harosoy backgrounds, respectively”
Claim · model-written summary
Soybean E8 mapped to linkage group C1 between Sat_404 and Satt136.
- Taxon
- soybeanGlycine maxt0
- Gene
- E8e0
- Outcome
- linkage group C1e0
- Qualifier
- between Sat_404 and Satt136e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean”
e0“The gene E8 specifically mapped to linkage group C1 between Sat_404 and Satt136”
Claim · model-written summary
No other maturity gene had been mapped to the soybean E8 region.
- Taxon
- soybeanGlycine maxt0
- Outcome
- No other maturity gene has been mapped to this regione0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean”
e0“No other maturity gene has been mapped to this region”
Claim · model-written summary
Two other candidate regions related to maturity QTL on linkage group L may be selected with early maturity.
- Taxon
- soybeanGlycine maxt0
- Outcome
- related to maturity quantitative trait loci on molecular linkage group Le0
- Value
- two other candidate regionse0
- Qualifier
- may be inadvertently selected along with early maturitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean”
e0“The two other candidate regions were both related to maturity quantitative trait loci on molecular linkage group L and may be inadvertently selected along with early maturity”
Claim · model-written summary
The soybean allele E8E8 leads to later maturity.
- Taxon
- soybeanGlycine maxt0
- Gene
- E8E8e0
- Outcome
- maturitye0
- Direction
- latere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean”
e0“E8E8 results in later maturity and e8e8 results in early maturity”
Claim · model-written summary
The soybean allele e8e8 leads to early maturity.
- Taxon
- soybeanGlycine maxt0
- Gene
- e8e8e0
- Outcome
- maturitye0
- Direction
- earlye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean”
e0“E8E8 results in later maturity and e8e8 results in early maturity”
Claim · model-written summary
The earliest Harosoy soybean maturity isoline is rated maturity group 000.
- Taxon
- soybeanGlycine maxt0
- Material
- Harosoye0
- Outcome
- maturity group 000e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean”
e0“The earliest Harosoy maturity isoline is now rated as maturity group 000”