Abstract
Drought is one of the most important factors limiting crop yield and foliar application of phytoprotectants is an important management strategy for increasing crop resistance to drought stress. This research was conducted at Rice Research Station of Tonekabon, Iran, in 2018 by using a split-plot based on a Randomized Complete Block Design (RCBD) with three replicates. Main plots were irrigation regimes [common irrigation (control), and irrigation withold from tillering stage (45 days after transplanting)] and subplots were foliar application of phytoprotectants (control, selenium, silicon, ascorbic acid, salicylic acid). The results showed that irrigation withold from tillering stage caused a 29.3% reduction in grain yield in the absence of foliar application. Drought stress decreased plant height, tiller number and 1000-grain weight by 15.5, 14.95 and 3.34%, respectively. Drought stress increased proline content by 115%. Also, in the irrigation withold from tillering stage, foliar application with selenium, silicon, ascorbic acid, and salicylic acid led to increase in floret fertility percentage and 1000-grain weight, thereby increasing the grain yield up to 32.6, 31.9, 35.3 and 33.3%, respectively, compared to no foliar application (control). In general, the results of this study showed that foliar application of phytoprotectants can reduce the adverse effects of drought stress and improve the grain yield of rice under drought stress conditions.
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Claims 13
Claim · model-written summary
Withheld irrigation reduced rice grain yield by 29.3% without foliar treatment.
- Taxon
- Rice
Oryza sativat0 - Material
- Oryza sativa Cv. Shiroudit0
- Treatment
- irrigation withold from tillering stagee0
- Outcome
- grain yielde0
- Direction
- reductione0
- Value
- 29.3%e0
- Qualifier
- in the absence of foliar applicatione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“irrigation withold from tillering stage caused a 29.3% reduction in grain yield in the absence of foliar application”
t0“Rice (Oryza sativa Cv. Shiroudi)”
Claim · model-written summary
Drought decreased rice plant height by 15.5%.
- Taxon
- RiceOryza sativat0
- Treatment
- Drought stresse0
- Outcome
- plant heighte0
- Direction
- decreasede0
- Value
- 15.5e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Drought stress decreased plant height, tiller number and 1000-grain weight by 15.5, 14.95 and 3.34%, respectively”
t0“Rice (Oryza sativa Cv. Shiroudi)”
Claim · model-written summary
Drought decreased rice tiller number by 14.95%.
- Taxon
- RiceOryza sativat0
- Treatment
- Drought stresse0
- Outcome
- tiller numbere0
- Direction
- decreasede0
- Value
- 14.95e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Drought stress decreased plant height, tiller number and 1000-grain weight by 15.5, 14.95 and 3.34%, respectively”
t0“Rice (Oryza sativa Cv. Shiroudi)”
Claim · model-written summary
Drought decreased rice 1000-grain weight by 3.34%.
- Taxon
- RiceOryza sativat0
- Treatment
- Drought stresse0
- Outcome
- 1000-grain weighte0
- Direction
- decreasede0
- Value
- 3.34%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Drought stress decreased plant height, tiller number and 1000-grain weight by 15.5, 14.95 and 3.34%, respectively”
t0“Rice (Oryza sativa Cv. Shiroudi)”
Claim · model-written summary
Drought increased rice proline content by 115%.
- Taxon
- RiceOryza sativat0
- Treatment
- Drought stresse0
- Outcome
- proline contente0
- Direction
- increasede0
- Value
- 115%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Drought stress increased proline content by 115%”
t0“Rice (Oryza sativa Cv. Shiroudi)”
Claim · model-written summary
Under withheld irrigation, foliar selenium increased rice floret fertility percentage and 1000-grain weight.
- Taxon
- RiceOryza sativat0
- Treatment
- foliar application with seleniume0
- Outcome
- floret fertility percentage and 1000-grain weighte0
- Direction
- increasee0
- Qualifier
- irrigation withold from tillering stagee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in the irrigation withold from tillering stage, foliar application with selenium, silicon, ascorbic acid, and salicylic acid led to increase in floret fertility percentage and 1000-grain weight”
t0“Rice (Oryza sativa Cv. Shiroudi)”
Claim · model-written summary
Under withheld irrigation, foliar silicon increased rice floret fertility percentage and 1000-grain weight.
- Taxon
- RiceOryza sativat0
- Treatment
- silicone0
- Outcome
- floret fertility percentage and 1000-grain weighte0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in the irrigation withold from tillering stage, foliar application with selenium, silicon, ascorbic acid, and salicylic acid led to increase in floret fertility percentage and 1000-grain weight”
t0“Rice (Oryza sativa Cv. Shiroudi)”
Claim · model-written summary
Under withheld irrigation, foliar ascorbic acid increased rice floret fertility percentage and 1000-grain weight.
- Taxon
- RiceOryza sativat0
- Treatment
- ascorbic acide0
- Outcome
- floret fertility percentage and 1000-grain weighte0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in the irrigation withold from tillering stage, foliar application with selenium, silicon, ascorbic acid, and salicylic acid led to increase in floret fertility percentage and 1000-grain weight”
t0“Rice (Oryza sativa Cv. Shiroudi)”
Claim · model-written summary
Under withheld irrigation, foliar salicylic acid increased rice floret fertility percentage and 1000-grain weight.
- Taxon
- RiceOryza sativat0
- Treatment
- salicylic acide0
- Outcome
- floret fertility percentage and 1000-grain weighte0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in the irrigation withold from tillering stage, foliar application with selenium, silicon, ascorbic acid, and salicylic acid led to increase in floret fertility percentage and 1000-grain weight”
t0“Rice (Oryza sativa Cv. Shiroudi)”
Claim · model-written summary
Under withheld irrigation, foliar selenium increased rice grain yield up to 32.6% over no foliar application.
- Taxon
- RiceOryza sativat0
- Treatment
- seleniume0
- Outcome
- grain yielde0
- Direction
- increasinge0
- Value
- 32.6e0
- Comparator
- no foliar application (control)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“foliar application with selenium, silicon, ascorbic acid, and salicylic acid led to increase in floret fertility percentage and 1000-grain weight, thereby increasing the grain yield up to 32.6, 31.9, 35.3 and 33.3%, respectively, compared to no foliar application (control)”
t0“Rice (Oryza sativa Cv. Shiroudi)”
Claim · model-written summary
Under withheld irrigation, foliar silicon increased rice grain yield up to 31.9% over no foliar application.
- Taxon
- RiceOryza sativat0
- Treatment
- silicone0
- Outcome
- grain yielde0
- Direction
- increasinge0
- Value
- 31.9e0
- Comparator
- no foliar application (control)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“foliar application with selenium, silicon, ascorbic acid, and salicylic acid led to increase in floret fertility percentage and 1000-grain weight, thereby increasing the grain yield up to 32.6, 31.9, 35.3 and 33.3%, respectively, compared to no foliar application (control)”
t0“Rice (Oryza sativa Cv. Shiroudi)”
Claim · model-written summary
Under withheld irrigation, foliar ascorbic acid increased rice grain yield up to 35.3% over no foliar application.
- Taxon
- RiceOryza sativat0
- Treatment
- ascorbic acide0
- Outcome
- grain yielde0
- Direction
- increasinge0
- Value
- 35.3e0
- Comparator
- no foliar application (control)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“foliar application with selenium, silicon, ascorbic acid, and salicylic acid led to increase in floret fertility percentage and 1000-grain weight, thereby increasing the grain yield up to 32.6, 31.9, 35.3 and 33.3%, respectively, compared to no foliar application (control)”
t0“Rice (Oryza sativa Cv. Shiroudi)”
Claim · model-written summary
Under withheld irrigation, foliar salicylic acid increased rice grain yield up to 33.3% over no foliar application.
- Taxon
- RiceOryza sativat0
- Treatment
- salicylic acide0
- Outcome
- grain yielde0
- Direction
- increasinge0
- Value
- 33.3%e0
- Comparator
- no foliar application (control)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“foliar application with selenium, silicon, ascorbic acid, and salicylic acid led to increase in floret fertility percentage and 1000-grain weight, thereby increasing the grain yield up to 32.6, 31.9, 35.3 and 33.3%, respectively, compared to no foliar application (control)”
t0“Rice (Oryza sativa Cv. Shiroudi)”
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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.