Abstract
Abstract This study evaluated growth patterns of Mexican oregano (Lippia berlandieri) under salt stress and tested the hypothesis that this species is salt tolerant. Plants were grown in Hoagland solution with no NaCl added (control) and with increasing NaCl concentrations added to produce osmotic potentials of −0.30, −0.45, −0.60, −0.90, and −1.20 MPa. Relative growth rate decreased linearly and leaf weight decreased 9-fold as osmotic potential decreased from control to −1.20 MPa. We therefore concluded that, compared to other non-halophytes, Mexican oregano is only moderately tolerant of salinity. Root growth was less affected by salinity than leaf and stem growth. Relative growth rate of Mexican oregano varied from 0.01 to 0.08 g/g/d. These low values suggest a slow recovery process for plants in native stands subject to continuous harvesting. Resumen Este estudio evaluo los patrones de crecimiento del oregano mexicano (Lippia berlandieri) bajo condiciones de estres salino y probo la hipotesis de que e...
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Claims 6
Claim · model-written summary
Relative growth rate decreased linearly as osmotic potential declined from control to −1.20 MPa.
Verbatim
e0“Relative growth rate decreased linearly and leaf weight decreased 9-fold as osmotic potential decreased from control to −1.20 MPa.”
e1“Mexican oregano (Lippia berlandieri)”
Claim · model-written summary
Leaf weight decreased ninefold from control to −1.20 MPa.
Verbatim
e0“Relative growth rate decreased linearly and leaf weight decreased 9-fold as osmotic potential decreased from control to −1.20 MPa.”
e1“Mexican oregano (Lippia berlandieri)”
Claim · model-written summary
Mexican oregano was concluded to be moderately salt tolerant compared with other non-halophytes.
Verbatim
e0“compared to other non-halophytes, Mexican oregano is only moderately tolerant of salinity”
Claim · model-written summary
Root growth was less affected by salinity than leaf and stem growth.
Verbatim
e0“Root growth was less affected by salinity than leaf and stem growth.”
e1“Mexican oregano (Lippia berlandieri)”
Claim · model-written summary
Relative growth rate ranged from 0.01 to 0.08 g/g/d.
Verbatim
e0“Relative growth rate of Mexican oregano varied from 0.01 to 0.08 g/g/d.”
Claim · model-written summary
The low relative growth rates suggest slow recovery in native stands under continuous harvesting.
Verbatim
e0“These low values suggest a slow recovery process for plants in native stands subject to continuous harvesting.”
e1“Relative growth rate of Mexican oregano varied from 0.01 to 0.08 g/g/d.”