Abstract
Abstract Field crops are most susceptible to salt stress in the early stages of growth. There is a general belief that barley ( Hordeum vulgare L.) is more salt‐tolerant than wheat ( Triticum aestivum L.), yet little is known regarding the response of different South African wheat and barley cultivars to saline conditions. An experiment was conducted to study the effects of salinity on seed germination in three South African spring wheat cultivars (SST 027, SST 056, and SST 087) and three spring barley cultivars (Nemesia, Erica, and Hessekwa). The experiment was conducted in petri dishes in a growth incubator at a constant temperature of 20 °C for 7 d. Seeds were exposed to five NaCl solutions with electrical conductivity (EC) levels of 4, 8, 12, 16, and 20 dS m −1 and were compared with those exposed to a solution with an EC of 0 dS m −1 (distilled water), which served as a control. The experiment design was a completely randomized design. The study showed that salinity influenced seed germination in all wheat and barley cultivars. Although all cultivars showed a reduction in total germination percentage with increasing salinity from EC levels of 0 to 20 dS m −1 , the differences were only significant ( P < .05) at high EC levels (16–20 dS m −1 ). Wheat cultivars outperformed barley cultivars at EC levels of 0, 4, 8, 12, and 16 dS m −1 . The study showed that salinity influenced seed germination in both wheat and barley, but barley was less salt‐tolerant during germination than wheat.
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Claims 5
Claim · model-written summary
Total germination of wheat cultivars fell as salinity increased from 0 to 20 dS m −1.
- Taxon
- wheat
Triticum aestivumt0 - Treatment
- increasing salinity from EC levels of 0 to 20 dS m −1e0
- Outcome
- total germination percentagee0
- Direction
- reductione0
- Comparator
- 0 to 20 dS m −1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“all cultivars showed a reduction in total germination percentage with increasing salinity from EC levels of 0 to 20 dS m −1”
t0“wheat and barley”
Claim · model-written summary
Total germination of barley cultivars fell as salinity increased from 0 to 20 dS m −1.
- Taxon
- barley
.jpg?width=60)
Hordeum vulgaret0 - Treatment
- increasing salinity from EC levels of 0 to 20 dS m −1e0
- Outcome
- total germination percentagee0
- Direction
- reductione0
- Comparator
- 0 to 20 dS m −1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“all cultivars showed a reduction in total germination percentage with increasing salinity from EC levels of 0 to 20 dS m −1”
t0“wheat and barley”
Claim · model-written summary
The germination differences were significant only at EC 16–20 dS m −1.
- Taxon
- wheat and barleyHordeum vulgareTriticum aestivumt0
- Treatment
- high EC levels (16–20 dS m −1 )e0
- Outcome
- total germination percentagee1
- Qualifier
- P < .05e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the differences were only significant ( P < .05) at high EC levels (16–20 dS m −1 )”
t0“wheat and barley”
e1“total germination percentage”
Claim · model-written summary
Wheat cultivars outperformed barley cultivars at EC levels 0, 4, 8, 12, and 16 dS m −1.
- Taxon
- WheatTriticum aestivume0
- Material
- Wheat cultivarse0
- Outcome
- seed germinatione1
- Direction
- outperformede0
- Qualifier
- EC levels of 0, 4, 8, 12, and 16 dS m −1e0
- Comparator
- barley cultivarse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Wheat cultivars outperformed barley cultivars at EC levels of 0, 4, 8, 12, and 16 dS m −1 .”
e1“seed germination in both wheat and barley”
Claim · model-written summary
Barley was less salt tolerant than wheat during germination.
- Taxon
- barleyHordeum vulgaree0
- Outcome
- salt‐tolerant during germinatione0
- Direction
- less salt‐tolerante0
- Comparator
- wheate0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“barley was less salt‐tolerant during germination than wheat.”
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