Abstract
Rising sea levels and salinization of groundwater due to global climate change result in fast-dwindling sources of freshwater. Therefore, it is important to find alternatives to grow food crops and vegetables. Halophytes are naturally evolved salt-tolerant plants that are adapted to grow in environments that inhibit the growth of most glycophytic crop plants substantially. Members of the Salicornioideae are promising candidates for saline agriculture due to their high tolerance to salinity. Our aim was to develop genetically characterized lines of Salicornia and Sarcocornia for further breeding and to determine optimal cultivation conditions. To obtain a large and diverse genetic pool, seeds were collected from different countries and ecological conditions. The external transcribed spacer (ETS) sequence of 62 Salicornia and Sarcocornia accessions was analysed: ETS sequence data showed a clear distinction between the two genera and between different Salicornia taxa. However, in some cases the ETS was not sufficiently variable to resolve morphologically distinct species. For the determination of optimal cultivation conditions, experiments on germination, seedling establishment and growth to a harvestable size were performed using different accessions of Salicornia spp. Experiments revealed that the percentage germination was greatest at lower salinities and with temperatures of 20/10 °C (day/night). Salicornia spp. produced more harvestable biomass in hydroponic culture than in sand culture, but the nutrient concentration requires optimization as hydroponically grown plants showed symptoms of stress. Salicornia ramosissima produced more harvestable biomass than Salicornia dolichostachya in artificial sea water containing 257 mM NaCl. Based on preliminary tests on ease of cultivation, gain in biomass, morphology and taste, S. dolichostachya was investigated in more detail, and the optimal salinity for seedling establishment was found to be 100 mM. Harvesting of S. dolichostachya twice in a growing season was successful, but the interval between the harvests needs to be optimized to maximize biomass production.
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Claims 9
Claim · model-written summary
ETS sequence data clearly distinguished the two genera Salicornia and Sarcocornia and different Salicornia taxa.
- Taxon
- Salicornia
Salicorniae0 - Outcome
- a clear distinction between the two generae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ETS sequence data showed a clear distinction between the two genera and between different Salicornia taxa”
Claim · model-written summary
In some cases the ETS was not sufficiently variable to resolve morphologically distinct Salicornia species.
- Taxon
- SalicorniaSalicorniae0
- Outcome
- resolve morphologically distinct speciese1
- Qualifier
- in some casese1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ETS sequence data showed a clear distinction between the two genera and between different Salicornia taxa”
e1“in some cases the ETS was not sufficiently variable to resolve morphologically distinct species”
Claim · model-written summary
Germination of Salicornia spp. was greatest at lower salinities.
- Taxon
- Salicornia sppSalicorniae3
- Treatment
- lower salinitiese2
- Outcome
- percentage germinatione2
- Direction
- greateste2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Experiments revealed that the percentage germination was greatest at lower salinities and with temperatures of 20/10 °C (day/night)”
e3“experiments on germination, seedling establishment and growth to a harvestable size were performed using different accessions of Salicornia spp”
Claim · model-written summary
Germination of Salicornia spp. was greatest at 20/10 °C (day/night).
- Taxon
- Salicornia sppSalicorniae3
- Treatment
- temperatures of 20/10 °C (day/night)e2
- Outcome
- percentage germinatione2
- Direction
- greateste2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Experiments revealed that the percentage germination was greatest at lower salinities and with temperatures of 20/10 °C (day/night)”
e3“experiments on germination, seedling establishment and growth to a harvestable size were performed using different accessions of Salicornia spp”
Claim · model-written summary
Salicornia spp. produced more harvestable biomass in hydroponic culture than in sand culture.
- Taxon
- Salicornia spp.Salicorniae4
- Treatment
- hydroponic culturee4
- Outcome
- harvestable biomasse4
- Direction
- moree4
- Comparator
- sand culturee4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“Salicornia spp. produced more harvestable biomass in hydroponic culture than in sand culture”
Claim · model-written summary
Hydroponically grown Salicornia spp. plants showed symptoms of stress.
- Taxon
- Salicornia spp.Salicorniae4
- Treatment
- hydroponically growne5
- Outcome
- symptoms of stresse5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“Salicornia spp. produced more harvestable biomass in hydroponic culture than in sand culture”
e5“hydroponically grown plants showed symptoms of stress”
Claim · model-written summary
Salicornia ramosissima produced more harvestable biomass than Salicornia dolichostachya in artificial sea water with 257 mM NaCl.
- Taxon
- Salicornia ramosissima
Salicornia ramosissimae6 - Treatment
- artificial sea water containing 257 mM NaCle6
- Outcome
- harvestable biomasse6
- Direction
- moree6
- Comparator
- Salicornia dolichostachyae6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“Salicornia ramosissima produced more harvestable biomass than Salicornia dolichostachya in artificial sea water containing 257 mM NaCl”
Claim · model-written summary
The optimal salinity for seedling establishment of S. dolichostachya was 100 mM.
- Taxon
- S. dolichostachya
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Salicornia dolichostachyae7 - Outcome
- optimal salinity for seedling establishmente7
- Value
- 100 mMe7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e7“S. dolichostachya was investigated in more detail, and the optimal salinity for seedling establishment was found to be 100 mM”
Claim · model-written summary
Harvesting S. dolichostachya twice in a growing season was successful.
- Taxon
- S. dolichostachyaSalicornia dolichostachyae5
- Treatment
- twice in a growing seasone5
- Outcome
- successfule5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“Harvesting of S. dolichostachya twice in a growing season was successful”
The same questions in other papers
salinity · growth · SalicorniaResults agree
3 papers in the same direction as this paper
- positive
- positive
- positive
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.