Abstract
The influence of saline water (4, 8, 12 dS m-1) irrigation on gas exchange and growth response of alfalfa genotypes Anand-2, T-9 and IL-112 was studied. T-9 and IL-112 showed a significant increase in net photosynthetic rate (PN) at low salinity (4 dS m-1) compared to the control whereas Anand-2 maintained an unaltered PN. Reduction in PN at higher salinities was primarily due to reduction of stomatal conductance. There was a greater reduction in transpiration rate as compared to PN rate, which resulted in an increase in water use efficiency (WUE). High WUE may serve as one of the strategies of the plant to withstand saline environment. However, the slight increase in WUE in Anand-2 could not help in maintaining its growth. Increase in Na+ concentration in comparison to K+ concentration may also contribute to the inhibition in growth.
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Claims 8
Claim · model-written summary
T-9 increased net photosynthesis at low salinity relative to control.
- Taxon
- Alfalfa
Medicago sativat0 - Material
- T-9e0
- Treatment
- low salinity (4 dS m-1)e0
- Outcome
- net photosynthetic rate (PN)e0
- Direction
- increasee0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“T-9 and IL-112 showed a significant increase in net photosynthetic rate (PN) at low salinity (4 dS m-1) compared to the control whereas Anand-2 maintained an unaltered PN”
t0“Alfalfa”
Claim · model-written summary
IL-112 increased net photosynthesis at low salinity relative to control.
- Taxon
- AlfalfaMedicago sativat0
- Material
- IL-112e0
- Treatment
- low salinity (4 dS m-1)e0
- Outcome
- net photosynthetic rate (PN)e0
- Direction
- increasee0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“T-9 and IL-112 showed a significant increase in net photosynthetic rate (PN) at low salinity (4 dS m-1) compared to the control whereas Anand-2 maintained an unaltered PN”
t0“Alfalfa”
Claim · model-written summary
Anand-2 had unchanged photosynthetic rate at low salinity.
- Taxon
- AlfalfaMedicago sativat0
- Material
- Anand-2e0
- Treatment
- low salinity (4 dS m-1)e0
- Outcome
- PNe0
- Direction
- unalterede0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“T-9 and IL-112 showed a significant increase in net photosynthetic rate (PN) at low salinity (4 dS m-1) compared to the control whereas Anand-2 maintained an unaltered PN”
t0“Alfalfa”
Claim · model-written summary
Photosynthesis declined at higher salinity, primarily because stomatal conductance declined.
- Taxon
- AlfalfaMedicago sativat0
- Treatment
- higher salinitiese0
- Outcome
- PNe0
- Direction
- Reductione0
- Qualifier
- reduction of stomatal conductancee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Reduction in PN at higher salinities was primarily due to reduction of stomatal conductance”
t0“Alfalfa”
Claim · model-written summary
Transpiration declined more than photosynthesis under saline irrigation.
- Taxon
- AlfalfaMedicago sativat0
- Outcome
- transpiration ratee0
- Direction
- greater reductione0
- Comparator
- PN ratee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was a greater reduction in transpiration rate as compared to PN rate”
t0“Alfalfa”
Claim · model-written summary
Water use efficiency increased under saline irrigation.
- Taxon
- AlfalfaMedicago sativat0
- Outcome
- water use efficiency (WUE)e0
- Direction
- increasee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“which resulted in an increase in water use efficiency (WUE)”
t0“Alfalfa”
Claim · model-written summary
The small water use efficiency increase in Anand-2 did not sustain growth.
- Taxon
- AlfalfaMedicago sativat0
- Material
- Anand-2e0
- Outcome
- growthe0
- Direction
- could not helpe0
- Qualifier
- slight increase in WUEe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the slight increase in WUE in Anand-2 could not help in maintaining its growth”
t0“Alfalfa”
Claim · model-written summary
A relative rise in sodium versus potassium may inhibit growth.
- Taxon
- AlfalfaMedicago sativat0
- Compound
- Na+ concentratione0
- Outcome
- inhibition in growthe0
- Direction
- inhibitione0
- Comparator
- K+ concentratione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increase in Na+ concentration in comparison to K+ concentration may also contribute to the inhibition in growth”
t0“Alfalfa”
The same questions in other papers
salinity · physiology: photosynthesis · Medicago sativa (alfalfa)Results differ
16 in the opposite direction
- negative
- no effect
- negative
13 papers more in this group
See all 17 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.