Abstract
Barnyard millet (Echinochloa frumentaceae) has a potential to withstand salinity. The existing genetic variability for salinity tolerance in 32 barnyard millet accessions was assessed based on the morpho-physiological parameters governing salt tolerance viz., germination percentage, relative germination rate, root length, shoot length, seedling length, vigour index, relative salt injury rate and relative water content. Under gradual increase in the intensity of salt stress, decrease in germination percentage, relative germination rate, root length, shoot length, seedling length, vigour index, relative water content and increase in relative salt injury rate was observed. The antioxidant assay also revealed that catalase and peroxidase activity increased with rise in salt level in tolerant genotypes (ACM161, ACM295, ACM335, GECH10, IEc167) but the enzyme activity in the salt sensitive genotypes (IEc134, IEc348, IEc607) declined with increase in salt concentration, when compared to control. The salt tolerant genotypes maintained higher relative water content and enzyme activity under salt stress. Hence, this may be the underlying mechanism for salt tolerance.
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Claims 8
Claim · model-written summary
Salt stress reduced germination percentage, relative germination rate, and vigour index.
- Taxon
- Barnyard millett0
- Treatment
- salt stresse0
- Outcome
- germination percentage, relative germination ratee0
- Direction
- decreasee0
Not reportedComparator
Verbatim
e0“Under gradual increase in the intensity of salt stress, decrease in germination percentage, relative germination rate, root length, shoot length, seedling length, vigour index, relative water content and increase in relative salt injury rate was observed.”
t0“Barnyard millet”
t1“Barnyard millet”
Claim · model-written summary
Salt stress reduced root, shoot, and seedling length.
- Taxon
- Barnyard millett0
- Treatment
- salt stresse0
- Outcome
- root length, shoot length, seedling lengthe0
- Direction
- decreasee0
Not reportedComparator
Verbatim
e0“Under gradual increase in the intensity of salt stress, decrease in germination percentage, relative germination rate, root length, shoot length, seedling length, vigour index, relative water content and increase in relative salt injury rate was observed.”
t0“Barnyard millet”
t1“Barnyard millet”
Claim · model-written summary
Salt stress reduced vigour index and relative water content.
- Taxon
- Barnyard millett0
- Treatment
- salt stresse1
- Outcome
- vigour index, relative water contente0
- Direction
- decreasee0
Not reportedComparator
Verbatim
e0“decrease in germination percentage, relative germination rate, root length, shoot length, seedling length, vigour index, relative water content and increase in relative salt injury rate was observed.”
t0“Barnyard millet”
t1“Barnyard millet”
e1“Under gradual increase in the intensity of salt stress, decrease in germination percentage, relative germination rate, root length, shoot length, seedling length, vigour index, relative water content and increase in relative salt injury rate was observed.”
Claim · model-written summary
Salt stress increased relative salt injury rate.
Not reportedComparator
Verbatim
e0“increase in relative salt injury rate was observed.”
t0“Barnyard millet”
t1“Barnyard millet”
e1“Under gradual increase in the intensity of salt stress, decrease in germination percentage, relative germination rate, root length, shoot length, seedling length, vigour index, relative water content and increase in relative salt injury rate was observed.”
Claim · model-written summary
Catalase and peroxidase activity rose with salt in tolerant genotypes compared with control.
Verbatim
e0“catalase and peroxidase activity increased with rise in salt level in tolerant genotypes (ACM161, ACM295, ACM335, GECH10, IEc167) but the enzyme activity in the salt sensitive genotypes (IEc134, IEc348, IEc607) declined with increase in salt concentration, when compared to control.”
t0“Barnyard millet”
t1“Barnyard millet”
Claim · model-written summary
Enzyme activity declined with salinity in sensitive genotypes compared with control.
Verbatim
e0“the enzyme activity in the salt sensitive genotypes (IEc134, IEc348, IEc607) declined with increase in salt concentration, when compared to control.”
t0“Barnyard millet”
t1“Barnyard millet”
Claim · model-written summary
Salt tolerant genotypes maintained higher relative water content and enzyme activity under stress.
Verbatim
e0“The salt tolerant genotypes maintained higher relative water content and enzyme activity under salt stress.”
t0“Barnyard millet”
t1“Barnyard millet”
Claim · model-written summary
Authors suggest that maintained water content and enzyme activity may underlie salt tolerance.
Verbatim
e0“The salt tolerant genotypes maintained higher relative water content and enzyme activity under salt stress. Hence, this may be the underlying mechanism for salt tolerance.”
t0“Barnyard millet”
t1“Barnyard millet”