Abstract
Abstract Legumes' sensitivity to salt is exacerbated under growth conditions requiring nitrogen fixation by the plant. Phosphorus (P) deficiency is widespread in legumes, especially common bean ( Phaseolus vulgaris L). To examine the performance of P. vulgaris under salt stress conditions, a field experiment was conducted using two recombinants inbred lines (RILs) 115 (P‐deficiency tolerant) and 147 (P‐deficiency susceptible), grown under different salinity levels (L) (1.56, 4.78, and 8.83 dS m −1 as LI, L2, and L3, respectively) and supplied with four P rates (0, 30, 60, and 90 kg ha −1 P as P0, P30, P60, and P90, respectively) in order to assess the impact of P on salt tolerance. Results indicate that growing both RILs at P60 or P90 under all salinity levels (especially L1) significantly increased total chlorophyll, carotenoids, total soluble sugars, total free amino acids, and proline. Increasing P supply up to P60 under all salinity levels significantly induced higher accumulation of P, K + , Ca 2+ and Mg 2+ leaves in both RILs. Based on quadratic response over all locations, the maximum seed yield of 1.465 t ha −1 could be obtained at application of P 81.0 kg ha‐1 in RIL115, while seed yield of 1.275 t ha −1 could be obtained with P rate of 78.3 kg ha −1 in RIL147. RIL115 exhibited more salt‐tolerance with positive consequence on plant biomass and grain yield stability. Improved salt tolerance through adequate P fertilization is likely a promising strategy to improve P. vulgaris salinity tolerance and thus productivity, a response that seems to be P‐rate dependent.
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Claims 8
Claim · model-written summary
P60 or P90 significantly increased total chlorophyll, carotenoids and total soluble sugars in both lines across salinity levels.
- Taxon
- Phaseolus vulgaris
Phaseolus vulgarist0 - Material
- both RILse0
- Treatment
- P60 or P90e0
- Outcome
- total chlorophyll, carotenoids, total soluble sugarse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“growing both RILs at P60 or P90 under all salinity levels (especially L1) significantly increased total chlorophyll, carotenoids, total soluble sugars”
t0“Phaseolus vulgaris”
Claim · model-written summary
P60 or P90 significantly increased free amino acids and proline in both lines.
- Taxon
- Phaseolus vulgarisPhaseolus vulgarist0
- Treatment
- P60 or P90e0
- Outcome
- total free amino acids, and prolinee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“growing both RILs at P60 or P90 under all salinity levels (especially L1) significantly increased total chlorophyll, carotenoids, total soluble sugars, total free amino acids, and proline”
t0“Phaseolus vulgaris”
Claim · model-written summary
Increasing P to P60 significantly increased leaf P, K and Ca accumulation in both lines.
- Taxon
- Phaseolus vulgarisPhaseolus vulgarist0
- Treatment
- Increasing P supply up to P60e0
- Outcome
- accumulation of P, K + , Ca 2+e0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing P supply up to P60 under all salinity levels significantly induced higher accumulation of P, K + , Ca 2+ and Mg 2+ leaves in both RILs”
t0“Phaseolus vulgaris”
Claim · model-written summary
Increasing P to P60 significantly increased leaf Mg accumulation in both lines.
- Taxon
- Phaseolus vulgarisPhaseolus vulgarist0
- Treatment
- Increasing P supply up to P60e0
- Outcome
- Mg 2+ leavese0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing P supply up to P60 under all salinity levels significantly induced higher accumulation of P, K + , Ca 2+ and Mg 2+ leaves in both RILs”
t0“Phaseolus vulgaris”
Claim · model-written summary
A quadratic response estimated maximum RIL115 seed yield of 1.465 t ha −1 at P 81.0 kg ha‐1.
- Taxon
- Phaseolus vulgarisPhaseolus vulgarist0
- Material
- RIL115e0
- Treatment
- P 81.0 kg ha‐1e0
- Outcome
- seed yielde0
- Direction
- maximume0
- Value
- 1.465 t ha −1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“maximum seed yield of 1.465 t ha −1 could be obtained at application of P 81.0 kg ha‐1 in RIL115”
t0“Phaseolus vulgaris”
Claim · model-written summary
A quadratic response estimated RIL147 seed yield of 1.275 t ha −1 at P 78.3 kg ha −1.
- Taxon
- Phaseolus vulgarisPhaseolus vulgarist0
- Material
- RIL147e0
- Treatment
- P rate of 78.3 kg ha −1e0
- Outcome
- seed yielde0
- Value
- 1.275 t ha −1e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seed yield of 1.275 t ha −1 could be obtained with P rate of 78.3 kg ha −1 in RIL147”
t0“Phaseolus vulgaris”
Claim · model-written summary
RIL115 showed greater salt tolerance and more stable biomass and grain yield.
- Taxon
- Phaseolus vulgarisPhaseolus vulgarist0
- Material
- RIL115e0
- Outcome
- salt‐tolerancee0
- Direction
- moree0
- Qualifier
- plant biomass and grain yield stabilitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“RIL115 exhibited more salt‐tolerance with positive consequence on plant biomass and grain yield stability”
t0“Phaseolus vulgaris”
Claim · model-written summary
The authors propose adequate phosphorus fertilization as a rate dependent way to improve bean salinity tolerance and productivity.
- Taxon
- P. vulgarisPhaseolus vulgarise0
- Outcome
- adequate P fertilizatione0
- Qualifier
- P‐rate dependente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Improved salt tolerance through adequate P fertilization is likely a promising strategy to improve P. vulgaris salinity tolerance and thus productivity, a response that seems to be P‐rate dependent”
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