Abstract
There is ample evidence to illustrate the role of triazoles and silicon in mitigating the effects of abiotic stresses. However, the potential of nano-silicon and tebuconazole and their possible interactions in ameliorating the effects of drought stress and related mechanisms in sugar beet have not been investigated so far. Therefore, a split-plot factorial experiment based on randomized complete block design with four replications was carried out at Motahari Research Station of Sugar Beet Seed Institute (SBSI), Karaj, Iran over two seasons, 2016 and 2017. Three irrigation treatments including 100, 75, and 50% of plant evapotranspiration (normal, mild stress, and severe stress, respectively) were assigned to the main plots. Subplots were composed of a factorial combination of three nano-silicon doses of 0, 1 and 2 mM and two tebuconazole doses of 0 and 25 mg l-1. The results showed that under severe drought stress, the effect of nano-silicon on the studied traits was dose-dependent, so that the application of nano-silicon with 1mM concentration improved growth parameters as well as physiological traits and increased white sugar yield and the maximum dry matter by 20 % and 17%, respectively compared with severe drought stress treatment. Under severe drought stress condition (irrigation at 50% of plant evapotranspiration), the highest leaf area index, chlorophyll and relative water content were observed in 1 mM nano-silicon treatment. Under severe drought stress, foliar application of 2 mM nano silicon had an adverse effect on sugar yield. The combined application of nano-silicon and tebuconazole improved dry matter production and sugar yield by maintaining plant greenness and preventing leaf aging which may indicate an interaction between these two compounds. These results indicate that nano-silicon and tebuconazole can be used as a suitable tool to mitigate the effects of drought stress on sugar beet.
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Claims 8
Claim · model-written summary
Under severe drought, 1 mM nano-silicon increased white sugar yield by 20% relative to severe drought treatment.
- Taxon
- sugar beet
Beta vulgaris subsp. vulgarist0 - Treatment
- nano-silicon with 1mM concentratione0
- Outcome
- white sugar yielde0
- Direction
- increasede0
- Value
- 20 %e0
- Comparator
- severe drought stress treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“under severe drought stress, the effect of nano-silicon on the studied traits was dose-dependent, so that the application of nano-silicon with 1mM concentration improved growth parameters as well as physiological traits and increased white sugar yield and the maximum dry matter by 20 % and 17%, respectively compared with severe drought stress treatment”
t0“sugar beet”
Claim · model-written summary
Under severe drought, 1 mM nano-silicon increased maximum dry matter by 17% relative to severe drought treatment.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarist0
- Treatment
- nano-silicon with 1mM concentratione0
- Outcome
- maximum dry mattere0
- Direction
- increasede0
- Value
- 17%e0
- Comparator
- severe drought stress treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the application of nano-silicon with 1mM concentration improved growth parameters as well as physiological traits and increased white sugar yield and the maximum dry matter by 20 % and 17%, respectively compared with severe drought stress treatment”
t0“sugar beet”
Claim · model-written summary
Under severe drought, 1 mM nano-silicon improved growth parameters and physiological traits.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarist0
- Treatment
- nano-silicon with 1mM concentratione0
- Outcome
- growth parameters as well as physiological traitse0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the application of nano-silicon with 1mM concentration improved growth parameters as well as physiological traits”
t0“sugar beet”
Claim · model-written summary
Under severe drought, 1 mM nano-silicon produced the highest leaf area index, chlorophyll and relative water content.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarist0
- Treatment
- 1 mM nano-silicon treatmente0
- Outcome
- leaf area index, chlorophyll and relative water contente0
- Direction
- higheste0
- Qualifier
- irrigation at 50% of plant evapotranspiratione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under severe drought stress condition (irrigation at 50% of plant evapotranspiration), the highest leaf area index, chlorophyll and relative water content were observed in 1 mM nano-silicon treatment.”
t0“sugar beet”
Claim · model-written summary
Under severe drought, foliar 2 mM nano-silicon adversely affected sugar yield.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarist0
- Treatment
- foliar application of 2 mM nano silicone0
- Outcome
- sugar yielde0
- Direction
- adverse effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under severe drought stress, foliar application of 2 mM nano silicon had an adverse effect on sugar yield.”
t0“sugar beet”
Claim · model-written summary
Combined nano-silicon and tebuconazole improved dry matter production and sugar yield.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarist0
- Treatment
- combined application of nano-silicon and tebuconazolee0
- Outcome
- dry matter production and sugar yielde0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The combined application of nano-silicon and tebuconazole improved dry matter production and sugar yield by maintaining plant greenness and preventing leaf aging which may indicate an interaction between these two compounds.”
t0“sugar beet”
Claim · model-written summary
The authors suggest that maintaining greenness and preventing leaf aging may explain the combination treatment effect.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarist0
- Outcome
- plant greenness and preventing leaf aginge0
- Qualifier
- may indicate an interactione0
Not reportedTreatment
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“by maintaining plant greenness and preventing leaf aging which may indicate an interaction between these two compounds.”
t0“sugar beet”
Claim · model-written summary
The authors suggest nano-silicon and tebuconazole as tools to mitigate drought stress in sugar beet.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarise0
- Treatment
- nano-silicon and tebuconazolee0
- Outcome
- mitigate the effects of drought stresse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“nano-silicon and tebuconazole can be used as a suitable tool to mitigate the effects of drought stress on sugar beet”
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