Abstract
Background The raising trend of cultivation of Bacillus thuringiensis ( Bt )-transgenic cotton is faced with a new challenge what effects on the growth and yield of Bt cotton under elevated CO 2 . Methods Rhizobacteria is the significant biological regulator to increase environmental suitability and ameliorate soil-nitrogen utilization efficiency of crops, especially Bt cotton. Pot-culture experiments investigated the effects on the yield and fiber quality components of Bt cotton (transgenic Line SCRC 37) inoculated with Azotobacter chroococcum (AC) under elevated CO 2 . Results The findings indicated that the inoculation of azotobacter significantly improved the yield and fiber quality components of Bt cotton, the elevated CO 2 significantly increased the soil density of A. chroococcum and the partial yield indexes (as cottonweightper 20 bolls, lint yield per 20 bolls and boll number per plant), and non-significant decrease the fiber quality components of Bt cotton except uniform. Discussion Overall results obviously depicted that the inoculation of azotobacter and the elevated CO 2 had positive effects on the yield and fiber quality components of Bt cotton. Presumably, azotobacter inoculation can be used to stimulate plant soil-nitrogen uptake and promote plant growth for Bt cotton under elevated CO 2 in the future.
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Claims 5
Claim · model-written summary
Azotobacter inoculation significantly improved Bt cotton yield.
- Taxon
- Bt cottone0
- Treatment
- inoculation of azotobactere0
- Interactor
- azotobacter
Azotobactere0symbiont - Outcome
- yielde0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the inoculation of azotobacter significantly improved the yield and fiber quality components of Bt cotton”
Claim · model-written summary
Azotobacter inoculation significantly improved Bt cotton fiber quality.
- Taxon
- Bt cottone0
- Treatment
- inoculation of azotobactere0
- Interactor
- azotobacterAzotobactere0symbiont
- Outcome
- fiber quality componentse0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the inoculation of azotobacter significantly improved the yield and fiber quality components of Bt cotton”
Claim · model-written summary
Elevated CO2 increased soil density of Azotobacter chroococcum.
Not reportedTaxonComparator
Verbatim
e0“the elevated CO 2 significantly increased the soil density of A. chroococcum”
Claim · model-written summary
Elevated CO2 significantly increased cotton weight per 20 bolls, lint yield per 20 bolls and boll number per plant.
- Treatment
- elevated CO 2e0
- Outcome
- cottonweightper 20 bolls, lint yield per 20 bolls and boll number per plante0
- Direction
- increasede0
Not reportedTaxonComparator
Verbatim
e0“the elevated CO 2 significantly increased the soil density of A. chroococcum and the partial yield indexes (as cottonweightper 20 bolls, lint yield per 20 bolls and boll number per plant)”
Claim · model-written summary
Elevated CO2 caused a nonsignificant decrease in Bt cotton fiber quality components except uniformity.
Not reportedTreatmentComparator
Verbatim
e0“non-significant decrease the fiber quality components of Bt cotton except uniform”
The same questions in other papers
inoculation · Azotobacter · Gossypium hirsutum (cotton)Results 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.