Abstract
The intolerable levels of arsenic (As) in groundwater and its application in rice cultivation are continuously affecting the rice production in Ganga-Meghna-Brahmaputra (GMB) plain. The reduced germination and plant growth rates under excessive As stress ultimately lead to lower yield. To mitigate this concerning issue, the present study was carried out to evaluate the potential of K-humate priming on seed germination and plant growth under As stress. Seeds were primed with 100 mg/l K-humate for 12 h prior to germination. The germination percentages in unprimed seeds were 65 ± 5.0% and 58.3 ± 7.6% under stress level of 50 μM AsV and 50 μM AsIII, respectively. However, germination percentage in K-humate primed seeds were 75 ± 5.0% and 68.3 ± 2.9% under AsV and AsIII stress, respectively. The vigour index I (VG I) and vigour index II (VG II) recorded on 12 DAS (days after seeding) were also increased by 1.47 and 1.51 fold, respectively with K-humate supplementation under As stress. Detrimental effects of AsIII on seed germination, seedling growth and other physiological parameters were more suppressive than AsV. Application of K-humate not only improved seed germination, seedling growth and nutrient uptake but also decreased the oxidative stress markers and antioxidant activities by minimizing As uptake and translocation in the seedlings.
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Claims 8
Claim · model-written summary
K-humate seed priming increased germination percentage under 50 μM AsV stress (75 ± 5.0% vs 65 ± 5.0% in unprimed seeds).
- Taxon
- rice
Oryza sativae0 - Material
- IR64t0
- Organ / stage
- Seedse3
- Treatment
- 100 mg/l K-humatee3
- Outcome
- germination percentagee1
- Direction
- higherinferrede1
- Value
- 75 ± 5.0%e1
- Qualifier
- 50 μM AsVe2
- Comparator
- unprimed seedse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice seed (IR64) priming with potassium humate”
e0“application in rice cultivation”
e1“germination percentage in K-humate primed seeds were 75 ± 5.0% and 68.3 ± 2.9% under AsV and AsIII stress, respectively”
e2“The germination percentages in unprimed seeds were 65 ± 5.0% and 58.3 ± 7.6% under stress level of 50 μM AsV and 50 μM AsIII, respectively”
e3“Seeds were primed with 100 mg/l K-humate for 12 h prior to germination”
Claim · model-written summary
K-humate seed priming increased germination percentage under 50 μM AsIII stress (68.3 ± 2.9% vs 58.3 ± 7.6% in unprimed seeds).
- Taxon
- riceOryza sativae0
- Material
- IR64t0
- Organ / stage
- Seedse3
- Treatment
- 100 mg/l K-humatee3
- Outcome
- germination percentagee1
- Direction
- higherinferrede1
- Value
- 68.3 ± 2.9%e1
- Qualifier
- 50 μM AsIIIe2
- Comparator
- unprimed seedse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice seed (IR64) priming with potassium humate”
e0“application in rice cultivation”
e1“germination percentage in K-humate primed seeds were 75 ± 5.0% and 68.3 ± 2.9% under AsV and AsIII stress, respectively”
e2“The germination percentages in unprimed seeds were 65 ± 5.0% and 58.3 ± 7.6% under stress level of 50 μM AsV and 50 μM AsIII, respectively”
e3“Seeds were primed with 100 mg/l K-humate for 12 h prior to germination”
Claim · model-written summary
K-humate supplementation under As stress increased vigour index I (VG I) at 12 DAS by 1.47 fold relative to unprimed seeds.
- Taxon
- riceOryza sativae0
- Treatment
- K-humate supplementation under As stresse4
- Outcome
- vigour index I (VG I)e4
- Direction
- increasede4
- Value
- 1.47e4
- Qualifier
- 12 DASe4
- Comparator
- unprimed seedse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application in rice cultivation”
e2“The germination percentages in unprimed seeds were 65 ± 5.0% and 58.3 ± 7.6% under stress level of 50 μM AsV and 50 μM AsIII, respectively”
e4“The vigour index I (VG I) and vigour index II (VG II) recorded on 12 DAS (days after seeding) were also increased by 1.47 and 1.51 fold, respectively with K-humate supplementation under As stress”
Claim · model-written summary
K-humate supplementation under As stress increased vigour index II (VG II) at 12 DAS by 1.51 fold relative to unprimed seeds.
- Taxon
- riceOryza sativae0
- Treatment
- K-humate supplementation under As stresse4
- Outcome
- vigour index II (VG II)e4
- Direction
- increasede4
- Value
- 1.51e4
- Qualifier
- 12 DASe4
- Comparator
- unprimed seedse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application in rice cultivation”
e2“The germination percentages in unprimed seeds were 65 ± 5.0% and 58.3 ± 7.6% under stress level of 50 μM AsV and 50 μM AsIII, respectively”
e4“The vigour index I (VG I) and vigour index II (VG II) recorded on 12 DAS (days after seeding) were also increased by 1.47 and 1.51 fold, respectively with K-humate supplementation under As stress”
Claim · model-written summary
AsIII was more suppressive than AsV for seed germination, seedling growth and other physiological parameters of rice.
- Taxon
- riceOryza sativae0
- Treatment
- AsIIIe5
- Outcome
- seed germination, seedling growth and other physiological parameterse5
- Direction
- more suppressivee5
- Comparator
- AsVe5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application in rice cultivation”
e5“Detrimental effects of AsIII on seed germination, seedling growth and other physiological parameters were more suppressive than AsV”
Claim · model-written summary
K-humate application improved seed germination, seedling growth and nutrient uptake of rice.
- Taxon
- riceOryza sativae0
- Treatment
- K-humatee6
- Outcome
- seed germination, seedling growth and nutrient uptakee6
- Direction
- improvede6
- Comparator
- unprimed seedse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application in rice cultivation”
e2“The germination percentages in unprimed seeds were 65 ± 5.0% and 58.3 ± 7.6% under stress level of 50 μM AsV and 50 μM AsIII, respectively”
e6“Application of K-humate not only improved seed germination, seedling growth and nutrient uptake”
Claim · model-written summary
K-humate decreased oxidative stress markers and antioxidant activities in rice seedlings.
- Taxon
- riceOryza sativae0
- Treatment
- K-humatee6
- Outcome
- oxidative stress markers and antioxidant activitiese7
- Direction
- decreasede7
- Comparator
- unprimed seedse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application in rice cultivation”
e2“The germination percentages in unprimed seeds were 65 ± 5.0% and 58.3 ± 7.6% under stress level of 50 μM AsV and 50 μM AsIII, respectively”
e6“Application of K-humate not only improved seed germination, seedling growth and nutrient uptake”
e7“but also decreased the oxidative stress markers and antioxidant activities by minimizing As uptake and translocation in the seedlings”
Claim · model-written summary
K-humate minimized As uptake and translocation in rice seedlings.
- Taxon
- riceOryza sativae0
- Treatment
- K-humatee6
- Outcome
- As uptake and translocatione7
- Direction
- minimizinge7
- Comparator
- unprimed seedse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application in rice cultivation”
e2“The germination percentages in unprimed seeds were 65 ± 5.0% and 58.3 ± 7.6% under stress level of 50 μM AsV and 50 μM AsIII, respectively”
e6“Application of K-humate not only improved seed germination, seedling growth and nutrient uptake”
e7“but also decreased the oxidative stress markers and antioxidant activities by minimizing As uptake and translocation in the seedlings”
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