Abstract
The production of rice mainly depends on nitrogen fertilizer. Extensive applications of chemical nitrogen fertilizer have adverse effects on plant health and the environment. The use of plant growth promoting microorganisms can increase the soil fertility and productivity of rice and also reduce the negative impact of chemical nitrogen fertilizer. Gluconacetobacter diazotrophicus PAL5 is a gram-negative endophytic bacterium that plays an important role in nitrogen fixation and plant growth promotion. The present investigation was to evaluate the effect of inoculation with G. diazotrophicus on seed germination indices of fifteen rice varieties (Oryza sativa L.) and seedling growth under in vitro conditions. Among the fifteen rice varieties inoculated with G. diazotrophicus, the highest increase in germination indices was observed in five varieties, viz. BPT5204, TN1, ISM, IR64, and Dhan53, which showed an increase in germination percentage (4.26-10%), Mean germination time (3.8-5.8%), germination speed 10.5- 26.8%), synchronization index (22.74-43.60%), standard deviation of germination rate (2.10-9.70%) and coefficient of variance of germination (11.80-18.36%) in comparison with the control on agar medium after 5 days. Furthermore, inoculation resulted in a significant increase in growth parameters (viz., root length, shoot length, root dry weight, shoot dry weight, seedling vigour index- I and seedling vigour index- II) over uninoculated control seeds in five rice varieties in comparison with the remaining rice varieties. The results thus reveal endophytic G. diazotrophicus not only increased the germination percentage but also enhanced the seedling growth parameters of rice varieties while eliciting a genotype-specific response in rice genotype.
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Claims 8
Claim · model-written summary
Inoculated rice varieties increased germination percentage by 4.26-10% versus control.
- Taxon
- rice
Oryza sativae0 - Material
- BPT5204, TN1, ISM, IR64, and Dhan53e0
- Treatment
- inoculated with G. diazotrophicuse0
- Interactor
- G. diazotrophicusGluconacetobacter diazotrophicuse0symbiont
- Outcome
- germination percentagee0
- Direction
- increasee0
- Value
- 4.26-10%e0
- Comparator
- controle0
- Setting
- agar mediume0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Among the fifteen rice varieties inoculated with G. diazotrophicus, the highest increase in germination indices was observed in five varieties, viz. BPT5204, TN1, ISM, IR64, and Dhan53, which showed an increase in germination percentage (4.26-10%), Mean germination time (3.8-5.8%), germination speed 10.5- 26.8%), synchronization index (22.74-43.60%), standard deviation of germination rate (2.10-9.70%) and coefficient of variance of germination (11.80-18.36%) in comparison with the control on agar medium after 5 days.”
Claim · model-written summary
Inoculated rice varieties increased Mean germination time by 3.8-5.8% versus control.
- Taxon
- riceOryza sativae0
- Material
- BPT5204, TN1, ISM, IR64, and Dhan53e0
- Treatment
- inoculated with G. diazotrophicuse0
- Interactor
- G. diazotrophicusGluconacetobacter diazotrophicuse0symbiont
- Outcome
- Mean germination timee0
- Direction
- increasee0
- Value
- 3.8-5.8%e0
- Comparator
- controle0
- Setting
- agar mediume0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Among the fifteen rice varieties inoculated with G. diazotrophicus, the highest increase in germination indices was observed in five varieties, viz. BPT5204, TN1, ISM, IR64, and Dhan53, which showed an increase in germination percentage (4.26-10%), Mean germination time (3.8-5.8%), germination speed 10.5- 26.8%), synchronization index (22.74-43.60%), standard deviation of germination rate (2.10-9.70%) and coefficient of variance of germination (11.80-18.36%) in comparison with the control on agar medium after 5 days.”
Claim · model-written summary
Inoculated rice varieties increased germination speed by 10.5- 26.8% versus control.
- Taxon
- riceOryza sativae0
- Material
- BPT5204, TN1, ISM, IR64, and Dhan53e0
- Treatment
- inoculated with G. diazotrophicuse0
- Interactor
- G. diazotrophicusGluconacetobacter diazotrophicuse0symbiont
- Outcome
- germination speede0
- Direction
- increasee0
- Value
- 10.5- 26.8%e0
- Comparator
- controle0
- Setting
- agar mediume0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Among the fifteen rice varieties inoculated with G. diazotrophicus, the highest increase in germination indices was observed in five varieties, viz. BPT5204, TN1, ISM, IR64, and Dhan53, which showed an increase in germination percentage (4.26-10%), Mean germination time (3.8-5.8%), germination speed 10.5- 26.8%), synchronization index (22.74-43.60%), standard deviation of germination rate (2.10-9.70%) and coefficient of variance of germination (11.80-18.36%) in comparison with the control on agar medium after 5 days.”
Claim · model-written summary
Inoculated rice varieties increased synchronization index by 22.74-43.60% versus control.
- Taxon
- riceOryza sativae0
- Material
- BPT5204, TN1, ISM, IR64, and Dhan53e0
- Treatment
- inoculated with G. diazotrophicuse0
- Interactor
- G. diazotrophicusGluconacetobacter diazotrophicuse0symbiont
- Outcome
- synchronization indexe0
- Direction
- increasee0
- Value
- 22.74-43.60%e0
- Comparator
- controle0
- Setting
- agar mediume0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Among the fifteen rice varieties inoculated with G. diazotrophicus, the highest increase in germination indices was observed in five varieties, viz. BPT5204, TN1, ISM, IR64, and Dhan53, which showed an increase in germination percentage (4.26-10%), Mean germination time (3.8-5.8%), germination speed 10.5- 26.8%), synchronization index (22.74-43.60%), standard deviation of germination rate (2.10-9.70%) and coefficient of variance of germination (11.80-18.36%) in comparison with the control on agar medium after 5 days.”
Claim · model-written summary
Inoculated rice varieties increased standard deviation of germination rate by 2.10-9.70% versus control.
- Taxon
- riceOryza sativae0
- Material
- BPT5204, TN1, ISM, IR64, and Dhan53e0
- Treatment
- inoculated with G. diazotrophicuse0
- Interactor
- G. diazotrophicusGluconacetobacter diazotrophicuse0symbiont
- Outcome
- standard deviation of germination ratee0
- Direction
- increasee0
- Value
- 2.10-9.70%e0
- Comparator
- controle0
- Setting
- agar mediume0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Among the fifteen rice varieties inoculated with G. diazotrophicus, the highest increase in germination indices was observed in five varieties, viz. BPT5204, TN1, ISM, IR64, and Dhan53, which showed an increase in germination percentage (4.26-10%), Mean germination time (3.8-5.8%), germination speed 10.5- 26.8%), synchronization index (22.74-43.60%), standard deviation of germination rate (2.10-9.70%) and coefficient of variance of germination (11.80-18.36%) in comparison with the control on agar medium after 5 days.”
Claim · model-written summary
Inoculated rice varieties increased coefficient of variance of germination by 11.80-18.36% versus control.
- Taxon
- riceOryza sativae0
- Material
- BPT5204, TN1, ISM, IR64, and Dhan53e0
- Treatment
- inoculated with G. diazotrophicuse0
- Interactor
- G. diazotrophicusGluconacetobacter diazotrophicuse0symbiont
- Outcome
- coefficient of variance of germinatione0
- Direction
- increasee0
- Value
- 11.80-18.36%e0
- Comparator
- controle0
- Setting
- agar mediume0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Among the fifteen rice varieties inoculated with G. diazotrophicus, the highest increase in germination indices was observed in five varieties, viz. BPT5204, TN1, ISM, IR64, and Dhan53, which showed an increase in germination percentage (4.26-10%), Mean germination time (3.8-5.8%), germination speed 10.5- 26.8%), synchronization index (22.74-43.60%), standard deviation of germination rate (2.10-9.70%) and coefficient of variance of germination (11.80-18.36%) in comparison with the control on agar medium after 5 days.”
Claim · model-written summary
Inoculation significantly increased root and shoot length and dry weight in five varieties.
- Taxon
- RiceOryza sativat0
- Treatment
- inoculatione0
- Interactor
- G. diazotrophicusGluconacetobacter diazotrophicuse1symbiont
- Outcome
- root length, shoot length, root dry weighte0
- Direction
- increasee0
- Comparator
- uninoculated control seedse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“inoculation resulted in a significant increase in growth parameters (viz., root length, shoot length, root dry weight, shoot dry weight, seedling vigour index- I and seedling vigour index- II) over uninoculated control seeds in five rice varieties”
e1“inoculation with G. diazotrophicus on seed germination indices”
t0“Rice”
Claim · model-written summary
Inoculation significantly increased shoot dry weight and two seedling vigor indices in five varieties.
- Taxon
- RiceOryza sativat0
- Treatment
- inoculatione0
- Interactor
- G. diazotrophicusGluconacetobacter diazotrophicuse1symbiont
- Outcome
- shoot dry weight, seedling vigour index- I and seedling vigour index- IIe0
- Direction
- increasee0
- Comparator
- uninoculated control seedse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“inoculation resulted in a significant increase in growth parameters (viz., root length, shoot length, root dry weight, shoot dry weight, seedling vigour index- I and seedling vigour index- II) over uninoculated control seeds in five rice varieties”
e1“inoculation with G. diazotrophicus on seed germination indices”
t0“Rice”
The same questions in other papers
Gluconacetobacter diazotrophicus · growth · Oryza sativa (rice)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
inoculation · growth · Oryza sativa (rice)Positive and negative results
361 papers in the same direction as this paper · 34 in the opposite direction · 3 reporting no difference from an alternative
- no effect
- negative
- no effect
395 papers more in this group
See all 399 papers →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.