Abstract
This investigation was made to study the involvement of IAA in plant growth promotion and vigor of wheat plants induced with plant growth promoting rhizobacteria. Nineteen isolates of fluorescent pseudomonads and 11 isolates of Bacillus spp. were subjected to germination percentage and seedling vigor index test. These parameters were determined according to recommended methods by ISTA (1985). The IAA production from selected bacterial isolates, which were showing the potential function of plant growth promotion were further subjected to quantitative analysis using Salkowski’s reagent (2% of 0.5 M FeCl3 in 34% HClO4) for Colorimetric detection. The vigor index and plant growth were significantly increased in Pfa-65 (43.36%) followed by B-18 (42.58%), Pfa-77 (40.83%), B-24 (40.68), Pfa-37(38.82%) and B-38 (38.52). The maximum concentration of IAA was detected in the isolate B-24(36.66 µg/ml) followed by Pfa-65(36.16 µg/ml), B-18(35.98 µg/ml) and Pfa-77(35.72 µg/ml). A positive correlation was observed between concentration of IAA produced and germination percentage with PGPR treatments (correlation coefficient was 0.94). The correlation coefficient was 0.96 between IAA produced and percent increase in vigor index with the treatments. Our data suggests that IAA, a growth promoting hormone, might be the key factor to promote the plant growth directed by the rhizobacteria
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 13
Claim · model-written summary
Pfa-65 increased wheat vigor index and growth by 43.36%.
- Taxon
- wheat
Triticum aestivume1 - Treatment
- Pfa-65e0
- Interactor
- Pfa-65e0symbiont
- Outcome
- vigor index and plant growthe0
- Direction
- increasede0
- Value
- 43.36%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The vigor index and plant growth were significantly increased in Pfa-65 (43.36%)”
e1“wheat plants”
Claim · model-written summary
B-18 increased wheat vigor index and growth by 42.58%.
- Taxon
- wheatTriticum aestivume1
- Treatment
- B-18e0
- Interactor
- B-18e0symbiont
- Outcome
- vigor index and plant growthe0
- Direction
- increasede0
- Value
- 42.58%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The vigor index and plant growth were significantly increased in Pfa-65 (43.36%) followed by B-18 (42.58%)”
e1“wheat plants”
Claim · model-written summary
Pfa-77 increased wheat vigor index and growth by 40.83%.
- Taxon
- wheatTriticum aestivume1
- Treatment
- Pfa-77e0
- Interactor
- Pfa-77e0symbiont
- Outcome
- vigor index and plant growthe0
- Direction
- increasede0
- Value
- 40.83%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The vigor index and plant growth were significantly increased in Pfa-65 (43.36%) followed by B-18 (42.58%), Pfa-77 (40.83%)”
e1“wheat plants”
Claim · model-written summary
B-24 increased wheat vigor index and growth by 40.68.
- Taxon
- wheatTriticum aestivume2
- Treatment
- B-24e0
- Interactor
- B-24e0symbiont
- Outcome
- vigor index and plant growthe1
- Direction
- increasede1
- Value
- 40.68e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pfa-77 (40.83%), B-24 (40.68), Pfa-37(38.82%) and B-38 (38.52)”
e1“The vigor index and plant growth were significantly increased”
e2“wheat plants”
Claim · model-written summary
Pfa-37 increased wheat vigor index and growth by 38.82%.
- Taxon
- wheatTriticum aestivume2
- Treatment
- Pfa-37e0
- Interactor
- Pfa-37e0symbiont
- Outcome
- vigor index and plant growthe1
- Direction
- increasede1
- Value
- 38.82%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pfa-77 (40.83%), B-24 (40.68), Pfa-37(38.82%) and B-38 (38.52)”
e1“The vigor index and plant growth were significantly increased”
e2“wheat plants”
Claim · model-written summary
B-38 increased wheat vigor index and growth by 38.52.
- Taxon
- wheatTriticum aestivume2
- Treatment
- B-38e0
- Interactor
- B-38e0symbiont
- Outcome
- vigor index and plant growthe1
- Direction
- increasede1
- Value
- 38.52e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pfa-77 (40.83%), B-24 (40.68), Pfa-37(38.82%) and B-38 (38.52)”
e1“The vigor index and plant growth were significantly increased”
e2“wheat plants”
Claim · model-written summary
B-24 produced the highest reported IAA concentration, 36.66 µg/ml.
- Taxon
- wheatTriticum aestivume1
- Interactor
- B-24e0symbiont
- Outcome
- concentration of IAAe0
- Value
- 36.66 µg/mle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The maximum concentration of IAA was detected in the isolate B-24(36.66 µg/ml)”
e1“wheat plants”
Claim · model-written summary
Pfa-65 produced 36.16 µg/ml IAA.
- Taxon
- wheatTriticum aestivume2
- Interactor
- Pfa-65e0symbiont
- Outcome
- concentration of IAAe1
- Value
- 36.16 µg/mle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“B-24(36.66 µg/ml) followed by Pfa-65(36.16 µg/ml)”
e1“The maximum concentration of IAA was detected in the isolate B-24(36.66 µg/ml)”
e2“wheat plants”
Claim · model-written summary
B-18 produced 35.98 µg/ml IAA.
- Taxon
- wheatTriticum aestivume2
- Interactor
- B-18e0symbiont
- Outcome
- concentration of IAAe1
- Value
- 35.98 µg/mle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“B-18(35.98 µg/ml)”
e1“The maximum concentration of IAA was detected in the isolate B-24(36.66 µg/ml)”
e2“wheat plants”
Claim · model-written summary
Pfa-77 produced 35.72 µg/ml IAA.
- Taxon
- wheatTriticum aestivume2
- Interactor
- Pfa-77e0symbiont
- Outcome
- concentration of IAAe1
- Value
- 35.72 µg/mle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pfa-77(35.72 µg/ml)”
e1“The maximum concentration of IAA was detected in the isolate B-24(36.66 µg/ml)”
e2“wheat plants”
Claim · model-written summary
IAA production and wheat germination percentage were positively correlated, r=0.94.
- Taxon
- wheatTriticum aestivume1
- Treatment
- PGPR treatmentse0
- Compound
- IAAe0
- Outcome
- germination percentagee0
- Direction
- positive correlatione0
- Value
- 0.94e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A positive correlation was observed between concentration of IAA produced and germination percentage with PGPR treatments (correlation coefficient was 0.94).”
e1“wheat plants”
Claim · model-written summary
IAA production and percent vigor-index increase were correlated, r=0.96.
- Taxon
- wheatTriticum aestivume1
- Compound
- IAAe0
- Outcome
- percent increase in vigor indexe0
- Direction
- increasee0
- Value
- 0.96e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The correlation coefficient was 0.96 between IAA produced and percent increase in vigor index with the treatments.”
e1“wheat plants”
Claim · model-written summary
Authors suggest IAA may mediate growth promotion by rhizobacteria.
- Taxon
- wheatTriticum aestivume1
- Interactor
- rhizobacteriaHyphomicrobialese0symbiont
- Compound
- IAAe0
- Outcome
- plant growthe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“IAA, a growth promoting hormone, might be the key factor to promote the plant growth directed by the rhizobacteria”
e1“wheat plants”