Abstract
Boron (B) is an essential and widely studied element in plants. Due to B dynamics in highly weathered soils, its concentration is generally low. Among other benefits, B interacts with calcium pectate, promotes stability on cellular membrane, and influences directly on plant nutrients uptake and non-structural metabolites synthesis. In sugarcane (Saccharum spp.) crop, adequate B supply has been associated with juice quality and yield of stalks and sugar and its response on adequate B concentration on commercial fields can differ greatly even into a group of varieties recommended for the same production environment. In this context, the authors aimed to assess the effects of B availability on sugarcane root and shoot development, nutrient status, and carbohydrate synthesis and allocation in two sugarcane varieties recommended for the same production environment using hydroponic solution. The experimental design was completely randomized and consisted of four treatments and four replicates. The treatments comprised two sugarcane varieties (RB867515 and RB92579) and two B concentrations (0.05 and 0.5 mg L−1) considered deficient and adequate, respectively, for plant development. Carbohydrate partitioning, nutrient concentrations in various plant parts, and growth and morphological parameters were evaluated. Under adequate B supply, the total concentrations of reducing sugars and sucrose increased 67 and 20% in RB867515 and 30 and 20% in RB92579, respectively, whereas starch decreased by 27% for both varieties. Adequate B supply increased the concentrations of all elements in all plant organs, except for N and K in leaves, and improved most yield and morphological parameters. Principal component analysis correlated the higher carbohydrates concentration and yield parameters with the variety RB92579, whereas the highest concentration of most nutrients was mainly associated with the variety RB867515, especially under adequate B supply. The main influence of adequate B supply was on carbohydrate synthesis. Although the sugarcane varieties responded differently to B availability, their biometric parameters were enhanced by adequate B supply. These results emphasize the need for B fertilization, regardless of the sugarcane variety’s susceptibility to B deficiency.
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Claims 10
Claim · model-written summary
Adequate boron increased reducing sugars by 67% in RB867515.
- Taxon
- sugarcanee0
- Material
- RB867515e1
- Treatment
- adequate B supplye1
- Outcome
- concentrations of reducing sugarse1
- Direction
- increasede1
- Value
- 67e1
Not reportedComparator
Verbatim
e0“In sugarcane (Saccharum spp.) crop”
e1“Under adequate B supply, the total concentrations of reducing sugars and sucrose increased 67 and 20% in RB867515”
Claim · model-written summary
Adequate boron increased sucrose by 20% in RB867515.
- Taxon
- sugarcanee0
- Material
- RB867515e1
- Treatment
- adequate B supplye1
- Outcome
- sucrosee1
- Direction
- increasede1
- Value
- 20%e1
Not reportedComparator
Verbatim
e0“In sugarcane (Saccharum spp.) crop”
e1“Under adequate B supply, the total concentrations of reducing sugars and sucrose increased 67 and 20% in RB867515”
Claim · model-written summary
Adequate boron increased reducing sugars by 30% in RB92579.
- Taxon
- sugarcanee0
- Material
- RB92579e1
- Treatment
- adequate B supplye1
- Outcome
- reducing sugarse1
- Direction
- increasede1
- Value
- 30e1
Not reportedComparator
Verbatim
e0“In sugarcane (Saccharum spp.) crop”
e1“Under adequate B supply, the total concentrations of reducing sugars and sucrose increased 67 and 20% in RB867515 and 30 and 20% in RB92579”
Claim · model-written summary
Adequate boron increased sucrose by 20% in RB92579.
- Taxon
- sugarcanee0
- Material
- RB92579e1
- Treatment
- adequate B supplye1
- Outcome
- sucrosee1
- Direction
- increasede1
- Value
- 20%e1
Not reportedComparator
Verbatim
e0“In sugarcane (Saccharum spp.) crop”
e1“Under adequate B supply, the total concentrations of reducing sugars and sucrose increased 67 and 20% in RB867515 and 30 and 20% in RB92579”
Claim · model-written summary
Adequate boron reduced starch by 27% in both varieties.
Not reportedComparator
Verbatim
e0“In sugarcane (Saccharum spp.) crop”
e1“starch decreased by 27% for both varieties”
e2“Under adequate B supply, the total concentrations of reducing sugars and sucrose increased”
Claim · model-written summary
Adequate boron increased elemental concentrations across plant organs except leaf nitrogen and potassium.
- Taxon
- sugarcanee0
- Treatment
- Adequate B supplye1
- Outcome
- concentrations of all elements in all plant organse1
- Direction
- increasede1
- Qualifier
- except for N and K in leavese1
Not reportedComparator
Verbatim
e0“In sugarcane (Saccharum spp.) crop”
e1“Adequate B supply increased the concentrations of all elements in all plant organs, except for N and K in leaves”
Claim · model-written summary
Adequate boron improved most yield and morphological parameters.
- Taxon
- sugarcanee0
- Treatment
- Adequate B supplye1
- Outcome
- yield and morphological parameterse1
- Direction
- improvede1
Not reportedComparator
Verbatim
e0“In sugarcane (Saccharum spp.) crop”
e1“Adequate B supply increased the concentrations of all elements in all plant organs, except for N and K in leaves, and improved most yield and morphological parameters”
Claim · model-written summary
Higher carbohydrate concentration and yield parameters correlated with RB92579.
Verbatim
e0“sugarcane varieties (RB867515 and RB92579)”
e1“higher carbohydrates concentration and yield parameters with the variety RB92579”
Claim · model-written summary
The highest concentrations of most nutrients were associated with RB867515, especially under adequate boron.
Verbatim
e0“sugarcane varieties (RB867515 and RB92579)”
e1“highest concentration of most nutrients was mainly associated with the variety RB867515, especially under adequate B supply”
Claim · model-written summary
The authors recommend boron fertilization regardless of varietal susceptibility.
Verbatim
e0“sugarcane varieties responded differently to B availability”
e1“need for B fertilization, regardless of the sugarcane variety’s susceptibility to B deficiency”
The same questions in other papers
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- no effect
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- positive
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See all 5 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.