Abstract
The present investigation was conducted to assess the changes in root architecture and defensive system in contrasting genotypes under PEG induced osmotic stress and to determine the optimum osmotic stress level, which could differentiate the drought resistance among genotypes. Changes in physiological and biochemical characteristics were also evaluated. Seedlings were subjected to osmotic stress by supplementing root medium with three different concentrations of PEG 6000. Results highlighted statistically significant differences in most of the traits for treatment T4 (-1.00MPa) as critical for differentiating the drought tolerant and drought susceptible genotypes at seedling stage itself. Water status and chlorophyll content decreased in all the concentrations of PEG. Increase in the activities of superoxide dismutase and catalase enzyme was observed in drought tolerant genotypes C306 and PBW175 which also suggested their water stress tolerance behavior in comparison to other genotypes. This study provides evidence that the tolerant genotypes are well equipped with better physiological traits and good defensive system. This seedling assay could be used by wheat breeders in their breeding programmes to select drought tolerant wheat genotypes at an early stage.
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Claims 7
Claim · model-written summary
The T4 treatment at −1.00 MPa differentiated tolerant and susceptible genotypes in most traits.
- Taxon
- wheat
Triticum aestivumt0 - Treatment
- T4 (-1.00MPa)e0
- Outcome
- differences in most of the traitse0
- Direction
- differencese0
- Value
- -1.00MPae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Results highlighted statistically significant differences in most of the traits for treatment T4 (-1.00MPa) as critical for differentiating the drought tolerant and drought susceptible genotypes at seedling stage itself.”
t0“wheat”
Claim · model-written summary
Water status decreased at all PEG concentrations.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- all the concentrations of PEGe0
- Outcome
- Water statuse0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water status and chlorophyll content decreased in all the concentrations of PEG.”
t0“wheat”
Claim · model-written summary
Chlorophyll content decreased at all PEG concentrations.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- all the concentrations of PEGe0
- Outcome
- chlorophyll contente0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water status and chlorophyll content decreased in all the concentrations of PEG.”
t0“wheat”
Claim · model-written summary
Superoxide dismutase activity increased in drought-tolerant C306 and PBW175.
- Taxon
- wheatTriticum aestivumt0
- Material
- C306e0
- Treatment
- osmotic stresst0
- Gene
- superoxide dismutasee0
- Outcome
- activities of superoxide dismutasee0
- Direction
- Increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increase in the activities of superoxide dismutase and catalase enzyme was observed in drought tolerant genotypes C306 and PBW175”
t0“osmotic stress on root architecture and defensive system in wheat genotypes”
Claim · model-written summary
Catalase activity increased in drought-tolerant C306 and PBW175.
- Taxon
- wheatTriticum aestivumt0
- Material
- PBW175e0
- Treatment
- osmotic stresst0
- Gene
- catalase enzymee0
- Outcome
- activities of superoxide dismutase and catalase enzymee0
- Direction
- Increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increase in the activities of superoxide dismutase and catalase enzyme was observed in drought tolerant genotypes C306 and PBW175”
t0“osmotic stress on root architecture and defensive system in wheat genotypes”
Claim · model-written summary
The authors concluded that tolerant genotypes had stronger physiological traits and defensive systems.
- Taxon
- wheatTriticum aestivumt0
- Material
- tolerant genotypese0
- Outcome
- better physiological traits and good defensive systeme0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the tolerant genotypes are well equipped with better physiological traits and good defensive system.”
t0“wheat”
Claim · model-written summary
The seedling assay was proposed for early selection of drought-tolerant wheat genotypes.
- Taxon
- wheatTriticum aestivume0
- Outcome
- select drought tolerant wheat genotypes at an early stagee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This seedling assay could be used by wheat breeders in their breeding programmes to select drought tolerant wheat genotypes at an early stage.”
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