Abstract
Leymus chinensis is one of the dominant species on the northern grassland of China.It has both high economic and high ecological value.However,the poor germination ability and deep dormancy of seed limit the grass production and utilization of L.chinensis.Plant hormone treatment is one of the efficient pathways to resolve these problems.Epi-brassinosteroid(EBR),one of the artificial synthesized materials with the similar biological function with BLs,has been proven to improve seed germination and seedling growth efficiently under both normal and stress condition.To our knowledge,few studies have been published to report the effect of EBR on seed germination and seedling growth of L.chinensis.Hence,this research is conducted to address two key questions:1)Is there any positive effect of EBR on seed germination and seedling growth of L.chinensis?2)Is there any combined effect when two hormones are used together?The positive effect of EBR treatment on the seed germination and root growth are observed.The germination rate of EBR-treated seeds increases 2~4times than that of the seeds been treated by water.Moreover,the root length of seedling developed by EBR treated seeds increases by 35%~40%compared with the control.Both the germination rate and seedling growth vary significantly(P0.05)with the concentration of EBR being used for the treatment.Compared with the treatment by the single hormone as EBR or Gibberellin(GA3),the germination rate of seeds been treated by two hormones increase by 20%~30%,the leaf and root length of seedling developed from the seeds treated by two hormones increase by49.14% and 51.34%,respectively.EBR does have positive effect on the seed germination and seedling growth of of L.chinensis.And the two-hormone treatment is better than that of single-hormone.The optimized combination of two hormones are EBR 0.10μg·g-1+GA3200μg·g-1 and EBR 0.01μg·g-1+GA3200μg·g-1,which show the highest of seed germination rate and the best performance of seedling growth of L.chinensis.
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Claims 9
Claim · model-written summary
EBR increased germination rate by 2~4times relative to water.
Verbatim
e0“The germination rate of EBR-treated seeds increases 2~4times than that of the seeds been treated by water”
e1“Leymus chinensis is one of the dominant species”
Claim · model-written summary
EBR raised seedling root length by 35%~40%.
Verbatim
e0“the root length of seedling developed by EBR treated seeds increases by 35%~40%compared with the control”
e1“Leymus chinensis is one of the dominant species”
Claim · model-written summary
Germination rate varied significantly with EBR concentration.
- Taxon
- Leymus chinensisLeymus chinensise1
- Treatment
- concentration of EBRe0
- Outcome
- germination ratee0
Not reportedDirection
Verbatim
e0“Both the germination rate and seedling growth vary significantly(P0.05)with the concentration of EBR being used for the treatment”
e1“Leymus chinensis is one of the dominant species”
Claim · model-written summary
Seedling growth varied significantly with EBR concentration.
- Taxon
- Leymus chinensisLeymus chinensise1
- Treatment
- concentration of EBRe0
- Outcome
- seedling growthe0
Not reportedDirection
Verbatim
e0“Both the germination rate and seedling growth vary significantly(P0.05)with the concentration of EBR being used for the treatment”
e1“Leymus chinensis is one of the dominant species”
Claim · model-written summary
Combined hormones raised germination rate by 20%~30% over single hormones.
Verbatim
e0“Compared with the treatment by the single hormone as EBR or Gibberellin(GA3),the germination rate of seeds been treated by two hormones increase by 20%~30%”
e1“Leymus chinensis is one of the dominant species”
Claim · model-written summary
Combined hormones raised leaf length by 49.14%.
Verbatim
e0“the leaf and root length of seedling developed from the seeds treated by two hormones increase by49.14% and 51.34%,respectively”
e1“Compared with the treatment by the single hormone as EBR or Gibberellin(GA3)”
e2“Leymus chinensis is one of the dominant species”
Claim · model-written summary
Combined hormones raised root length by 51.34%.
Verbatim
e0“the leaf and root length of seedling developed from the seeds treated by two hormones increase by49.14% and 51.34%,respectively”
e1“Compared with the treatment by the single hormone as EBR or Gibberellin(GA3)”
e2“Leymus chinensis is one of the dominant species”
Claim · model-written summary
EBR 0.10μg·g-1+GA3200μg·g-1 gave highest germination and best seedling growth.
- Taxon
- L.chinensisLeymus chinensise0
- Treatment
- EBR 0.10μg·g-1+GA3200μg·g-1e0
- Outcome
- highest of seed germination rate and the best performance of seedling growthe0
Verbatim
e0“EBR 0.10μg·g-1+GA3200μg·g-1 and EBR 0.01μg·g-1+GA3200μg·g-1,which show the highest of seed germination rate and the best performance of seedling growth of L.chinensis”
Claim · model-written summary
EBR 0.01μg·g-1+GA3200μg·g-1 gave highest germination and best seedling growth.
- Taxon
- L.chinensisLeymus chinensise0
- Treatment
- EBR 0.01μg·g-1+GA3200μg·g-1e0
- Outcome
- highest of seed germination rate and the best performance of seedling growthe0
Verbatim
e0“EBR 0.10μg·g-1+GA3200μg·g-1 and EBR 0.01μg·g-1+GA3200μg·g-1,which show the highest of seed germination rate and the best performance of seedling growth of L.chinensis”
The same questions in other papers
class · growth · Leymus chinensisResults agree
1 paper in the same direction as this paper
- positive
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.