Abstract
【Objective】The aim of the present study was to reveal the natural variation of sterility and to identify new sterile lines in soybean. 【Method】A total of 8 327 soybean landraces and 414 hybrid populations were observed and from them eleven and six sterile lines were identified and evaluated, respectively. In addition, the natural mutation rate of sterility was estimated from five cultivars with a large population size. 【Result】Ten of the eleven sterile lines obtained from different landraces might be natural mutants according to their morphological and agronomical performances similar to their corresponding parents. Among the 17 sterile lines, 13 lines performed completely male sterile and four lines were male partially sterile. The female fertility of these lines could also be divided into fertile, partially sterile and completely sterile according to the results of parallel crossing and natural outcrossing rate of sterile lines. All the sterile lines were therefore grouped into six male and female performance types. Among them, seven lines belonged to the male-sterile and female-fertile (MS-FF) type (including NJS-3H, NJS-4H, NJS-8H with good outcrossing ability);two lines (NJS-2H, NJS-12H) were male sterile, female partially sterile (MS-FPS); two lines (NJS-9, NJS-11H) were male partially sterile, female fertile (MPS-FF); three lines NJS-18H, NJS-7H, NJS-10H were male-sterile and female-sterile (MS-FS), both male and female partially sterile (MPS-FPS), and male partially sterile and female sterile (MPS-FS) types, respectively; and other three lines (NJS-17H、NJS-20H、NJS-22H) were male sterile but female fertility uncertain yet. The results of genetic analyses showed that nuclear gene(s) controlled the sterility of the 17 lines. Some sterile lines, including NJS-8H (MS-FF type controlled by one dominant gene), NJS-2H and NJS-12 (MS-FPS new type by one recessive gene), NJS-9 (MPS-FF type by two recessive genes), NJS-7H (MPS-FPS type by two recessive genes), and NJS-10H (MPS-FS type with abnormal flower structure and leaf shape), were new sterility genotypes in soybean, and other lines had one recessive gene inheritance. The mutation rate of sterility was estimated as 0~1.87×10-4 from five cultivars with large population size. 【Conclusion】A certain amount of natural variation in sterility exists, including a single dominant gene controlled MS-FF type, which could be obtained feasibly through natural variation selection and could be used as elite sources for further research on reproductive biology as well as in breeding programs of soybeans.
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Claims 20
Claim · model-written summary
Eleven sterile lines from landraces and six from hybrid populations were identified.
- Taxon
- soybean
Glycine maxt0 - Outcome
- sterile lines were identifiede0
- Value
- eleven and six sterile linese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean”
e0“eleven and six sterile lines were identified and evaluated, respectively”
Claim · model-written summary
Ten of eleven landrace-derived sterile lines might be natural mutants based on parental similarity.
- Taxon
- soybeanGlycine maxt0
- Outcome
- might be natural mutantse0
- Value
- Ten of the elevene0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean”
e0“Ten of the eleven sterile lines obtained from different landraces might be natural mutants according to their morphological and agronomical performances similar to their corresponding parents”
Claim · model-written summary
Thirteen lines were completely male sterile.
- Taxon
- soybeanGlycine maxt0
- Outcome
- completely male sterilee0
- Value
- 13 linese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean”
e0“Among the 17 sterile lines, 13 lines performed completely male sterile and four lines were male partially sterile”
Claim · model-written summary
Four lines were partially male sterile.
- Taxon
- soybeanGlycine maxt0
- Outcome
- male partially sterilee0
- Value
- four linese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean”
e0“four lines were male partially sterile”
Claim · model-written summary
Female fertility ranged from fertile to partially and completely sterile.
- Taxon
- soybeanGlycine maxt0
- Outcome
- fertile, partially sterile and completely sterilee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean”
e0“female fertility of these lines could also be divided into fertile, partially sterile and completely sterile”
Claim · model-written summary
The sterile lines grouped into six male and female performance types.
- Taxon
- soybeanGlycine maxt0
- Outcome
- male and female performance typese0
- Value
- sixe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean”
e0“All the sterile lines were therefore grouped into six male and female performance types”
Claim · model-written summary
Seven lines were male sterile and female fertile, including three with good outcrossing ability.
- Taxon
- soybeanGlycine maxt0
- Outcome
- male-sterile and female-fertile (MS-FF) typee0
- Value
- seven linese0
- Qualifier
- NJS-3H, NJS-4H, NJS-8H with good outcrossing abilitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean”
e0“seven lines belonged to the male-sterile and female-fertile (MS-FF) type (including NJS-3H, NJS-4H, NJS-8H with good outcrossing ability)”
Claim · model-written summary
Two lines were male sterile and female partially sterile.
- Taxon
- soybeanGlycine maxt0
- Material
- NJS-2H, NJS-12He0
- Outcome
- male sterile, female partially sterile (MS-FPS)e0
- Value
- two linese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean”
e0“two lines (NJS-2H, NJS-12H) were male sterile, female partially sterile (MS-FPS)”
Claim · model-written summary
Two lines were partially male sterile and female fertile.
- Taxon
- soybeanGlycine maxt0
- Material
- NJS-9, NJS-11He0
- Outcome
- male partially sterile, female fertile (MPS-FF)e0
- Value
- two linese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean”
e0“two lines (NJS-9, NJS-11H) were male partially sterile, female fertile (MPS-FF)”
Claim · model-written summary
NJS-18H was male and female sterile.
- Taxon
- soybeanGlycine maxt0
- Material
- NJS-18He0
- Outcome
- male-sterile and female-sterile (MS-FS)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean”
e0“NJS-18H, NJS-7H, NJS-10H were male-sterile and female-sterile (MS-FS), both male and female partially sterile (MPS-FPS), and male partially sterile and female sterile (MPS-FS) types, respectively”
Claim · model-written summary
NJS-7H was partially male and female sterile.
- Taxon
- soybeanGlycine maxt0
- Material
- NJS-7He0
- Outcome
- both male and female partially sterile (MPS-FPS)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean”
e0“NJS-18H, NJS-7H, NJS-10H were male-sterile and female-sterile (MS-FS), both male and female partially sterile (MPS-FPS), and male partially sterile and female sterile (MPS-FS) types, respectively”
Claim · model-written summary
NJS-10H was partially male sterile and female sterile.
- Taxon
- soybeanGlycine maxt0
- Material
- NJS-10He0
- Outcome
- male partially sterile and female sterile (MPS-FS)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean”
e0“NJS-18H, NJS-7H, NJS-10H were male-sterile and female-sterile (MS-FS), both male and female partially sterile (MPS-FPS), and male partially sterile and female sterile (MPS-FS) types, respectively”
Claim · model-written summary
Three lines were male sterile with uncertain female fertility.
- Taxon
- soybeanGlycine maxt0
- Material
- NJS-17H、NJS-20H、NJS-22He0
- Outcome
- male sterile but female fertility uncertain yete0
- Value
- three linese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean”
e0“other three lines (NJS-17H、NJS-20H、NJS-22H) were male sterile but female fertility uncertain yet”
Claim · model-written summary
Nuclear genes controlled sterility in the 17 lines.
- Taxon
- soybeanGlycine maxt0
- Gene
- nuclear gene(s)e0
- Outcome
- sterilitye0
- Value
- 17 linese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean”
e0“nuclear gene(s) controlled the sterility of the 17 lines”
Claim · model-written summary
NJS-8H male sterility and female fertility was controlled by one dominant gene.
- Taxon
- soybeanGlycine maxt0
- Material
- NJS-8He0
- Gene
- one dominant genee0
- Outcome
- MS-FF typee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean”
e0“NJS-8H (MS-FF type controlled by one dominant gene)”
Claim · model-written summary
NJS-2H and NJS-12 shared a new MS-FPS type governed by one recessive gene.
- Taxon
- soybeanGlycine maxt0
- Material
- NJS-2H and NJS-12e0
- Gene
- one recessive genee0
- Outcome
- MS-FPS new typee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean”
e0“NJS-2H and NJS-12 (MS-FPS new type by one recessive gene)”
Claim · model-written summary
NJS-9 MPS-FF type was governed by two recessive genes.
- Taxon
- soybeanGlycine maxt0
- Material
- NJS-9e0
- Gene
- two recessive genese0
- Outcome
- MPS-FF typee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean”
e0“NJS-9 (MPS-FF type by two recessive genes)”
Claim · model-written summary
NJS-7H MPS-FPS type was governed by two recessive genes.
- Taxon
- soybeanGlycine maxt0
- Material
- NJS-7He0
- Gene
- two recessive genese0
- Outcome
- MPS-FPS typee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean”
e0“NJS-7H (MPS-FPS type by two recessive genes)”
Claim · model-written summary
Other lines showed one recessive gene inheritance.
- Taxon
- soybeanGlycine maxt0
- Outcome
- one recessive gene inheritancee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean”
e0“other lines had one recessive gene inheritance”
Claim · model-written summary
The estimated sterility mutation rate in five cultivars was 0~1.87×10-4.
- Taxon
- soybeanGlycine maxt0
- Outcome
- mutation rate of sterilitye0
- Value
- 0~1.87×10-4e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean”
e0“mutation rate of sterility was estimated as 0~1.87×10-4 from five cultivars with large population size”