Abstract
Plants of Rosa × spp. L. ‘Happy Hour’ grafted on the rootstocks R . × ‘Manetti’ and R . × ‘Natal Briar’ were salinized with 12 mM NaCl and received supplemental calcium (Ca) applications (as CaSO 4 ) of 0, 2.5, 5.0, 7.5 and 10 mM. Additional plants were salinized with 6 mM Na 2 SO 4 and supplemented with 5 mM CaSO 4 and compared to non-salinized, no supplemental Ca control plants. Cumulative flowers harvested, shoot length and leaf chlorophyll index were similar for both rootstocks across salt treatments, but Manetti plants had higher dry weights in flowers and most plant tissues except roots. Productivity and water relations in NaCl-salinized plants were not responsive to supplemental Ca. Conversely, calcium-supplemented plants salinized with Na 2 SO 4 had better productivity and quality than those with NaCl, and were similar to non-stressed control plants. Salt injury symptoms were evident only on NaCl-treated plants, regardless of Ca supplements, and closely associated with chloride, but not sodium, accumulation, in leaf tissues. The extent of the ameliorative properties of supplemental calcium applications on salinized rose plants is influenced by the salinity level, the chemical composition of the salinizing solution (major ions and counter-ions) and the cultivar (scion) and rootstock selection.
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Claims 7
Claim · model-written summary
Flower number, shoot length and chlorophyll index were similar across salt treatments for both rose rootstocks.
Verbatim
e0“Cumulative flowers harvested, shoot length and leaf chlorophyll index were similar for both rootstocks across salt treatments”
t0“Rosa × spp. L. ‘Happy Hour’”
Claim · model-written summary
Manetti plants had higher flower and most tissue dry weights than Natal Briar plants, except roots.
Verbatim
e0“Manetti plants had higher dry weights in flowers and most plant tissues except roots”
Claim · model-written summary
Supplemental calcium did not change productivity or water relations in NaCl-salinized roses.
- Taxon
- plantsViridiplantaee0
- Treatment
- supplemental Cae0
- Outcome
- Productivity and water relationse0
- Direction
- not responsivee0
Not reportedComparator
Verbatim
e0“Productivity and water relations in NaCl-salinized plants were not responsive to supplemental Ca”
Claim · model-written summary
Calcium-supplemented roses under sodium sulfate salinity had better productivity and quality than those under sodium chloride salinity and resembled non-stressed controls.
Verbatim
e0“calcium-supplemented plants salinized with Na 2 SO 4 had better productivity and quality than those with NaCl, and were similar to non-stressed control plants”
Claim · model-written summary
Salt injury occurred only on NaCl-treated roses regardless of calcium supplementation.
Verbatim
e0“Salt injury symptoms were evident only on NaCl-treated plants, regardless of Ca supplements”
Claim · model-written summary
Rose salt injury was closely associated with leaf chloride accumulation but not sodium accumulation.
Verbatim
e0“closely associated with chloride, but not sodium, accumulation, in leaf tissues”
t0“Salt-Stressed Roses”
Claim · model-written summary
The ameliorative effect of supplemental calcium on salinized roses depends on salinity level, salinizing-solution composition and scion/rootstock selection.
Verbatim
e0“The extent of the ameliorative properties of supplemental calcium applications on salinized rose plants is influenced by the salinity level, the chemical composition of the salinizing solution (major ions and counter-ions) and the cultivar (scion) and rootstock selection”