Abstract
Abstract Poor crop establishment of direct-seeded rice (DSR) is one of the major constraints to wide adoption of DSR, particularly in areas prone to flooding after sowing or where fields are not level. Seed pelleting is an effective, practical and facile technique to enhance crop establishment under unfavorable environmental conditions. To evaluate the effects of seed pelleting on rice germination, seedling growth and associated metabolic events under waterlogging stress, various seed pelleting treatments including formulae, pelleting times (the weight ratio of pelleting agents: rice seeds = 1:1~7:1 (w/w) and CaO 2 contents were tested in series of experiments. Naked seeds were maintained for comparison as a control. Pelleting treatments with CaO 2 significantly increased seed germination and seedling growth of DSR under waterlogging conditions compared with pelleted seeds without CaO 2 and naked seeds. The optimum weight ratios of CaO 2 to dry seeds were found to be in the range of 0.6:1–1:1 based on seed germination and seedling growth performance under waterlogging conditions. Under waterlogging conditions, high seed germination percentage and vigorous seedling growth of DSR due to seed pelleting with CaO 2 was associated with an increase in α-amylase activity, but decrease in alcohol dehydrogenase (ADH) and pyruvate decarboxylase (PDC) activities in pelleted seeds.
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Claims 6
Claim · model-written summary
CaO 2 pelleting increased rice germination under waterlogging.
- Taxon
- rice
Oryza sativat0 - Treatment
- Pelleting treatments with CaO 2e0
- Outcome
- seed germinatione0
- Direction
- increasede0
- Comparator
- pelleted seeds without CaO 2 and naked seedse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pelleting treatments with CaO 2 significantly increased seed germination and seedling growth of DSR under waterlogging conditions compared with pelleted seeds without CaO 2 and naked seeds.”
t0“Rice”
Claim · model-written summary
CaO 2 pelleting increased seedling growth under waterlogging.
- Taxon
- riceOryza sativat0
- Treatment
- Pelleting treatments with CaO 2e0
- Outcome
- seedling growthe0
- Direction
- increasede0
- Comparator
- pelleted seeds without CaO 2 and naked seedse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pelleting treatments with CaO 2 significantly increased seed germination and seedling growth of DSR under waterlogging conditions compared with pelleted seeds without CaO 2 and naked seeds.”
t0“Rice”
Claim · model-written summary
The optimum CaO 2 to dry-seed weight ratio was 0.6:1–1:1.
- Taxon
- riceOryza sativat0
- Outcome
- optimum weight ratios of CaO 2 to dry seedse0
- Value
- 0.6:1–1:1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The optimum weight ratios of CaO 2 to dry seeds were found to be in the range of 0.6:1–1:1 based on seed germination and seedling growth performance under waterlogging conditions.”
t0“Rice”
Claim · model-written summary
CaO 2 pelleting was associated with increased α-amylase activity.
- Taxon
- riceOryza sativat0
- Treatment
- seed pelleting with CaO 2e0
- Gene
- α-amylasee0
- Outcome
- α-amylase activitye0
- Direction
- increasee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“high seed germination percentage and vigorous seedling growth of DSR due to seed pelleting with CaO 2 was associated with an increase in α-amylase activity”
t0“Rice”
Claim · model-written summary
CaO 2 pelleting was associated with decreased ADH activity.
- Taxon
- riceOryza sativat0
- Organ / stage
- pelleted seedse0
- Gene
- alcohol dehydrogenase (ADH)e0
- Outcome
- alcohol dehydrogenase (ADH)e0
- Direction
- decreasee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“decrease in alcohol dehydrogenase (ADH) and pyruvate decarboxylase (PDC) activities in pelleted seeds.”
t0“Rice”
Claim · model-written summary
CaO 2 pelleting was associated with decreased PDC activity.
- Taxon
- riceOryza sativat0
- Organ / stage
- pelleted seedse0
- Gene
- pyruvate decarboxylase (PDC)e0
- Outcome
- pyruvate decarboxylase (PDC) activitiese0
- Direction
- decreasee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“decrease in alcohol dehydrogenase (ADH) and pyruvate decarboxylase (PDC) activities in pelleted seeds.”
t0“Rice”
The same questions in other papers
seed treatment · growth · Oryza sativa (rice)Positive and negative results
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- positive
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