Abstract
Irrigation with desalinated seawater is an effective way to use ocean resources and save freshwater resources. However, seawater irrigation would cause yield loss of rice. In order to explore the effects of ultrasonic seed treatment on rice performances under seawater irrigation, the present study was conducted with three irrigation treatments (fresh water (SW0), ten times diluted seawater (SW1%, 0.34% salinity), and five times diluted seawater (SW2%, 0.68% salinity)) and two seed treatments (ultrasonic treated seeds (UT) and untreated seeds (CK)). Compared with SW0 + CK treatment, SW1 + CK and SW2 + CK treatments significantly decreased grain yield by 56.19% and 66.69%, spikelets per panicle by 30.11% and 55.80%, seed-setting rate by 23.05% and 18.87%, and 1000-grain weight by 4.55% and 14.50%, respectively. Seawater irrigation also significantly increased malonaldehyde (MDA) and proline contents and the activities of superoxide dismutase (SOD) and peroxidase (POD). Ultrasonic seed treatment significantly increased the grain number per panicle, seed-setting rate, and grain yield of rice under seawater irrigation. Compared with CK, UT treatment substantially reduced MDA content, SOD activity, and POD activity in SW1 and SW2 conditions. Furthermore, UT treatment significantly increased proline content and down-regulated proline dehydrogenase activity under seawater irrigation. We deduced that ultrasonic seed treatment enhanced the salinity tolerance of rice by inducing the proline accmulation. Our findings indicated that ultrasonic seed treatment could an effective strategy to promote rice productivity under seawater irrigation.
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Claims 6
Claim · model-written summary
Diluted seawater treatments reduced rice grain yield by 56.19% and 66.69%.
- Taxon
- rice
Oryza sativat0 - Treatment
- SW1 + CK and SW2 + CK treatmentse0
- Outcome
- grain yielde0
- Direction
- decreasede0
- Value
- 56.19% and 66.69%e0
- Comparator
- SW0 + CK treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared with SW0 + CK treatment, SW1 + CK and SW2 + CK treatments significantly decreased grain yield by 56.19% and 66.69%”
t0“Rice”
Claim · model-written summary
Seawater irrigation increased MDA and proline contents.
- Taxon
- riceOryza sativat0
- Treatment
- Seawater irrigatione0
- Outcome
- malonaldehyde (MDA) and proline contentse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seawater irrigation also significantly increased malonaldehyde (MDA) and proline contents”
t0“Rice”
Claim · model-written summary
Ultrasonic seed treatment increased grain number per panicle, seed-setting rate, and grain yield under seawater irrigation.
- Taxon
- riceOryza sativae0
- Treatment
- Ultrasonic seed treatmente0
- Outcome
- grain number per panicle, seed-setting rate, and grain yielde0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ultrasonic seed treatment significantly increased the grain number per panicle, seed-setting rate, and grain yield of rice under seawater irrigation”
Claim · model-written summary
Ultrasonic seed treatment reduced MDA content, SOD activity, and POD activity under both saline irrigation conditions.
- Taxon
- RiceOryza sativat0
- Treatment
- UT treatmente0
- Outcome
- MDA content, SOD activity, and POD activitye0
- Direction
- reducede0
- Qualifier
- SW1 and SW2 conditionse0
- Comparator
- CKe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared with CK, UT treatment substantially reduced MDA content, SOD activity, and POD activity in SW1 and SW2 conditions”
t0“Rice”
Claim · model-written summary
Ultrasonic seed treatment increased proline content under seawater irrigation.
- Taxon
- RiceOryza sativat0
- Treatment
- UT treatmente0
- Outcome
- proline contente0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“UT treatment significantly increased proline content and down-regulated proline dehydrogenase activity under seawater irrigation”
t0“Rice”
Claim · model-written summary
Ultrasonic seed treatment down-regulated proline dehydrogenase activity under seawater irrigation.
- Taxon
- RiceOryza sativat0
- Treatment
- UT treatmente0
- Outcome
- proline dehydrogenase activitye0
- Direction
- down-regulatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“UT treatment significantly increased proline content and down-regulated proline dehydrogenase activity under seawater irrigation”
t0“Rice”
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