Abstract
Understanding the effect of boron (B) on plant physiology will help to refine the diagnosis of B deficiency and improvement in B fertilizer recommendations for cotton (Gossypium hirsutum L.) growing areas. This study shows the testing of hypotheses “that application of B-fertilizer improves net photosynthetic rate (PN) and water use efficiency (WUE) for cotton plant on a B-deficient soil [< 0.50 mg B kg−1 hydrochloric acid (HCl)-extractable] in an arid environment”. Thus, a permanent layout [two-year field experiment (2004 and 2005)] was conducted to study the impact of B fertilizer at 0, 1.0, 1.5, 2.0, 2.5, and 3.0 kg ha−1 on gas exchange and electrolyte leakage (EL) characteristics of cotton crop (cv. ‘CIM-473’). The soil at experimental site was alkaline (pH 8.1), calcareous [calcium carbonate (CaCO3 5.6%)], and silt loam (Typic Haplocambid). Boron use decreased EL of plant membrane (P ≤ 0.05), and increased PN, transpiration rate (E) and stomatal conductance (gs), while intercellular concentration of carbon dioxide (CO2; Ci) significantly decreased (P ≤ 0.05) during both experimental years. There was a positive, but non-significant effect of B concentration on chlorophyll content in plant leaves. Application of 3.0 kg B ha−1 improved WUE up to 9.7% [4.62 μmol (CO2) mmol−1 water (H2O)] compared to control plants (4.21 [μmol (CO2) mmol−1 (H2O)]. Principal component analysis (PCA) of data indicates positive correlations between leaf B concentration and PN, E, gs, and WUE, while a negative relationship existed between leaf B concentration and intercellular CO2 (Ci). This study showed that addition of B fertilizer in the B-deficient calcareous soil proved beneficial for growth and development for cotton crop by enhancing its WUE and gas exchange characteristics.
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Claims 8
Claim · model-written summary
Boron use decreased electrolyte leakage of cotton leaf membranes.
- Taxon
- Cotton
Gossypium hirsutumt0 - Treatment
- Boron usee0
- Outcome
- EL of plant membranee0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cotton (Gossypium HirsutumL.)”
e0“Boron use decreased EL of plant membrane (P ≤ 0.05), and increased PN, transpiration rate (E) and stomatal conductance (gs), while intercellular concentration of carbon dioxide (CO2; Ci) significantly decreased (P ≤ 0.05) during both experimental years”
Claim · model-written summary
Boron use increased net photosynthetic rate, transpiration rate and stomatal conductance of cotton.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- Boron usee0
- Outcome
- PN, transpiration rate (E) and stomatal conductance (gs)e0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cotton (Gossypium HirsutumL.)”
e0“Boron use decreased EL of plant membrane (P ≤ 0.05), and increased PN, transpiration rate (E) and stomatal conductance (gs), while intercellular concentration of carbon dioxide (CO2; Ci) significantly decreased (P ≤ 0.05) during both experimental years”
Claim · model-written summary
Boron use decreased intercellular CO2 concentration in cotton in both experimental years.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- Boron usee0
- Outcome
- intercellular concentration of carbon dioxide (CO2; Ci)e0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cotton (Gossypium HirsutumL.)”
e0“Boron use decreased EL of plant membrane (P ≤ 0.05), and increased PN, transpiration rate (E) and stomatal conductance (gs), while intercellular concentration of carbon dioxide (CO2; Ci) significantly decreased (P ≤ 0.05) during both experimental years”
Claim · model-written summary
B concentration had a positive but non-significant effect on chlorophyll content in cotton leaves.
- Taxon
- CottonGossypium hirsutumt0
- Organ / stage
- plant leavese2
- Treatment
- B concentratione2
- Outcome
- chlorophyll content in plant leavese2
- Direction
- positivee2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cotton (Gossypium HirsutumL.)”
e2“There was a positive, but non-significant effect of B concentration on chlorophyll content in plant leaves”
Claim · model-written summary
Application of 3.0 kg B ha−1 improved water use efficiency of cotton by up to 9.7% compared with control plants.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- Application of 3.0 kg B ha−1e1
- Outcome
- WUEe1
- Direction
- improvede1
- Value
- 9.7%e1
- Qualifier
- 4.21 [μmol (CO2) mmol−1 (H2O)]e1
- Comparator
- control plantse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cotton (Gossypium HirsutumL.)”
e1“Application of 3.0 kg B ha−1 improved WUE up to 9.7% [4.62 μmol (CO2) mmol−1 water (H2O)] compared to control plants (4.21 [μmol (CO2) mmol−1 (H2O)]”
Claim · model-written summary
Leaf B concentration correlated positively with net photosynthetic rate, transpiration rate and stomatal conductance in cotton.
- Taxon
- CottonGossypium hirsutumt0
- Organ / stage
- leafe3
- Treatment
- leaf B concentratione3
- Outcome
- PN, E, gse3
- Direction
- positivee3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cotton (Gossypium HirsutumL.)”
e3“Principal component analysis (PCA) of data indicates positive correlations between leaf B concentration and PN, E, gs, and WUE”
Claim · model-written summary
Leaf B concentration correlated positively with water use efficiency in cotton.
- Taxon
- CottonGossypium hirsutumt0
- Organ / stage
- leafe3
- Treatment
- leaf B concentratione3
- Outcome
- WUEe3
- Direction
- positivee3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cotton (Gossypium HirsutumL.)”
e3“Principal component analysis (PCA) of data indicates positive correlations between leaf B concentration and PN, E, gs, and WUE”
Claim · model-written summary
Leaf B concentration correlated negatively with intercellular CO2 in cotton.
- Taxon
- CottonGossypium hirsutumt0
- Organ / stage
- leafe4
- Treatment
- leaf B concentratione4
- Outcome
- intercellular CO2 (Ci)e4
- Direction
- negativee4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cotton (Gossypium HirsutumL.)”
e4“while a negative relationship existed between leaf B concentration and intercellular CO2 (Ci)”
The same questions in other papers
boron atom · physiology: oxidative · Gossypium hirsutum (cotton)Results agree
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- positive
- positive
- positive
boron atom · physiology: photosynthesis · Gossypium hirsutum (cotton)Results agree
4 papers in the same direction as this paper
- positive
- positive
- positive
1 paper more in this group
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.