Abstract
Abstract Rice is an important staple crop produced and consumed worldwide. However, poor seed emergence is one of the main impediments to obtaining higher yield of rice especially in hot and dry ecosystems of the world that are ravaged by drought. Therefore, this study was carried out to evaluate the effects of potassium nitrate (KNO 3 ), salicylic acid (SA) and silicon dioxide (SiO 2 ) priming in improving emergence, seedling growth, biochemical attributes and antioxidant activities of FARO44 rice under drought conditions. Rice seedlings primed with 2.5% and 5% KNO 3 , 3% and 3.5% SiO 2 , and 1 mM and 2.5 mM SA were subjected to three drought levels of low, moderate and severe under the greenhouse. Seed emergence, seedling growth, biochemical attributes and antioxidant activities were thereafter evaluated. Seed priming experiments were laid in a completely randomized design with five replicates per treatment. The results found that rice seedlings responded differently to different priming treatments. However, all primed rice seedlings had significantly ( P ≤ 0.05) improved emergence percentage (72–92%), seedling growth, seedling vigor, seedling fresh and dry biomass and shorter emergence time compared with controls. Likewise, total soluble protein content, activities of catalase, ascorbate peroxidase and superoxide dismutase, carbohydrate, soluble sugar and total chlorophyll contents of rice seedlings were increased by more than two-folds by seed priming compared with control. Salicylic acid showed less effect in increasing emergence, seedling growth, antioxidant activities and biochemical attributes of rice. Thus, this study established that seed priming with KNO 3 (2.5% and 5%) and SiO 2 (3% and 3.5%) were more effective in improving emergence, seedling growth, biochemical attributes and antioxidant activities of FARO44. Thus, priming of FARO44 rice with this chemical is recommended for fast emergence, seedling growth and drought resistance in dry ecosystems.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 9
Claim · model-written summary
Primed rice seedlings had significantly higher emergence percentage (72–92%) than controls under drought.
- Taxon
- rice
Oryza sativae0 - Treatment
- primede0
- Outcome
- emergence percentagee0
- Direction
- improvede0
- Value
- 72–92%e0
- Comparator
- controlse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“all primed rice seedlings had significantly ( P ≤ 0.05) improved emergence percentage (72–92%), seedling growth, seedling vigor, seedling fresh and dry biomass and shorter emergence time compared with controls”
Claim · model-written summary
Primed rice seedlings had significantly improved seedling growth, vigor and fresh and dry biomass compared with controls.
- Taxon
- riceOryza sativae0
- Treatment
- primede0
- Outcome
- seedling growth, seedling vigor, seedling fresh and dry biomasse0
- Direction
- improvede0
- Comparator
- controlse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“all primed rice seedlings had significantly ( P ≤ 0.05) improved emergence percentage (72–92%), seedling growth, seedling vigor, seedling fresh and dry biomass and shorter emergence time compared with controls”
Claim · model-written summary
Primed rice seedlings had significantly shorter emergence time than controls.
- Taxon
- riceOryza sativae0
- Treatment
- primede0
- Outcome
- shorter emergence timee0
- Direction
- shortere0
- Comparator
- controlse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“all primed rice seedlings had significantly ( P ≤ 0.05) improved emergence percentage (72–92%), seedling growth, seedling vigor, seedling fresh and dry biomass and shorter emergence time compared with controls”
Claim · model-written summary
Seed priming increased total soluble protein content of rice seedlings by more than two-fold compared with control.
- Taxon
- riceOryza sativae0
- Treatment
- seed priminge0
- Outcome
- total soluble protein contente0
- Direction
- increasede0
- Value
- more than two-foldse0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Likewise, total soluble protein content, activities of catalase, ascorbate peroxidase and superoxide dismutase, carbohydrate, soluble sugar and total chlorophyll contents of rice seedlings were increased by more than two-folds by seed priming compared with control”
Claim · model-written summary
Seed priming increased the activities of catalase, ascorbate peroxidase and superoxide dismutase in rice seedlings by more than two-fold compared with control.
- Taxon
- riceOryza sativae0
- Treatment
- seed priminge0
- Outcome
- activities of catalase, ascorbate peroxidase and superoxide dismutasee0
- Direction
- increasede0
- Value
- more than two-foldse0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Likewise, total soluble protein content, activities of catalase, ascorbate peroxidase and superoxide dismutase, carbohydrate, soluble sugar and total chlorophyll contents of rice seedlings were increased by more than two-folds by seed priming compared with control”
Claim · model-written summary
Seed priming increased carbohydrate, soluble sugar and total chlorophyll contents of rice seedlings by more than two-fold compared with control.
- Taxon
- riceOryza sativae0
- Treatment
- seed priminge0
- Outcome
- carbohydrate, soluble sugar and total chlorophyll contentse0
- Direction
- increasede0
- Value
- more than two-foldse0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Likewise, total soluble protein content, activities of catalase, ascorbate peroxidase and superoxide dismutase, carbohydrate, soluble sugar and total chlorophyll contents of rice seedlings were increased by more than two-folds by seed priming compared with control”
Claim · model-written summary
Salicylic acid priming had less effect than the other priming treatments in increasing emergence, seedling growth, antioxidant activities and biochemical attributes of rice.
- Taxon
- riceOryza sativae0
- Treatment
- Salicylic acide0
- Outcome
- emergence, seedling growth, antioxidant activities and biochemical attributese0
- Direction
- less effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salicylic acid showed less effect in increasing emergence, seedling growth, antioxidant activities and biochemical attributes of rice”
Claim · model-written summary
Seed priming with KNO3 (2.5% and 5%) and SiO2 (3% and 3.5%) was more effective in improving emergence, seedling growth, biochemical attributes and antioxidant activities of FARO44.
- Material
- FARO44e0
- Treatment
- seed priming with KNO 3 (2.5% and 5%) and SiO 2 (3% and 3.5%)e0
- Outcome
- emergence, seedling growth, biochemical attributes and antioxidant activitiese0
- Direction
- more effectivee0
Not reportedTaxonComparator
Verbatim
e0“seed priming with KNO 3 (2.5% and 5%) and SiO 2 (3% and 3.5%) were more effective in improving emergence, seedling growth, biochemical attributes and antioxidant activities of FARO44”
Claim · model-written summary
The authors recommend priming FARO44 rice with KNO3 or SiO2 for fast emergence, seedling growth and drought resistance in dry ecosystems.
- Taxon
- riceOryza sativae0
- Material
- FARO44e0
- Outcome
- fast emergence, seedling growth and drought resistancee0
- Setting
- dry ecosystemse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“priming of FARO44 rice with this chemical is recommended for fast emergence, seedling growth and drought resistance in dry ecosystems”
The same questions in other papers
silicon dioxide · growth · Oryza sativa (rice)Results differ
28 papers in the same direction as this paper · 6 in the opposite direction
- no effect
- negative
- no effect
31 papers more in this group
See all 35 papers →salicylic acid · growth · Oryza sativa (rice)Results differ
7 papers in the same direction as this paper · 47 in the opposite direction
- positive
- positive
- positive
51 papers more in this group
See all 55 papers →seed treatment · physiology: pigments · Oryza sativa (rice)Positive and negative results
16 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
14 papers more in this group
See all 18 papers →seed treatment · physiology: antioxidant enzymes · Oryza sativa (rice)Positive and negative results
29 papers in the same direction as this paper · 1 reporting no difference from an alternative
- positive
- positive
- no effect
27 papers more in this group
See all 31 papers →seed treatment · growth · Oryza sativa (rice)Positive and negative results
229 papers in the same direction as this paper · 15 in the opposite direction
- negative
- positive
- positive
241 papers more in this group
See all 245 papers →seed treatment · physiology: osmolytes · Oryza sativa (rice)Results agree
25 papers in the same direction as this paper
- positive
- positive
- positive
22 papers more in this group
See all 26 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.