Abstract
In many crop species, seed germination and early seedling growth are the most sensitive stages to any stress. In order to evaluate the effect of different seed priming techniques on germination of paddy under different temperatures a factorial experiment was conducted with six varieties. Seeds were primed for 12h in seven priming media (salicylic acid 50 ppm, ascorbic acid 200ppm, citric acid 200ppm, proline 0.2%, calcium chloride 2%, Na2HPO4 100ppm and distilled water) at three different temperatures (30°C, 38°C and 43°C) to observe the germination and related parameters. Results indicated that an increase in heat stress decreased germination components such as germination percentage, speed of germination, root length, shoot length and vigour index. Ascorbic acid and salicylic acid pre-treatment @ 200ppm and 50ppm respectively results in improvement of germination properties of paddy under heat stress condition because of its antioxidant capacity. The other treatments also enhanced the germination properties. Priming treatments including hydropriming resulted in the increased activity of α-amylase which in turn has resulted in better mobilization of stored carbohydrate reserves resulted in improvement of germination and other related parameters.
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Claims 7
Claim · model-written summary
Increasing heat stress decreased paddy germination percentage and speed.
Verbatim
e0“an increase in heat stress decreased germination components such as germination percentage, speed of germination, root length, shoot length and vigour index”
e1“germination of paddy under different temperatures”
Claim · model-written summary
Increasing heat stress decreased root and shoot length and vigour index.
Verbatim
e0“an increase in heat stress decreased germination components such as germination percentage, speed of germination, root length, shoot length and vigour index”
e1“germination of paddy under different temperatures”
Claim · model-written summary
Ascorbic acid pretreatment improved paddy germination under heat stress.
Verbatim
e0“Ascorbic acid and salicylic acid pre-treatment @ 200ppm and 50ppm respectively results in improvement of germination properties of paddy under heat stress condition”
Claim · model-written summary
Salicylic acid pretreatment improved paddy germination under heat stress.
Verbatim
e0“Ascorbic acid and salicylic acid pre-treatment @ 200ppm and 50ppm respectively results in improvement of germination properties of paddy under heat stress condition”
Claim · model-written summary
Other priming treatments enhanced germination properties.
Not reportedComparator
Verbatim
e0“The other treatments also enhanced the germination properties”
e1“germination of paddy under different temperatures”
Claim · model-written summary
Priming, including hydropriming, increased α-amylase activity.
- Taxon
- paddye1
- Treatment
- Priming treatments including hydropriminge0
- Gene
- α-amylasee0
- Outcome
- activity of α-amylasee0
- Direction
- increasede0
Not reportedComparator
Verbatim
e0“Priming treatments including hydropriming resulted in the increased activity of α-amylase”
e1“germination of paddy under different temperatures”
Claim · model-written summary
Increased α-amylase activity improved mobilization of carbohydrate reserves and germination.
Verbatim
e0“increased activity of α-amylase which in turn has resulted in better mobilization of stored carbohydrate reserves resulted in improvement of germination and other related parameters”
e1“germination of paddy under different temperatures”
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See all 107 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.