Abstract
Walnut ( J. regia L.) is one of the most sensitive plants to abiotic stresses for which finding salt-tolerant genetic resources is very important. Effects of salt stress on seed germination of seven walnut cultivars (Serr, Lara, Pedro, Chandler, Hartely, Vina, and Roun de Montignac) were studied. Salt stress treatments were applied using NaCl solutions ranging from 50 to 250 m m . The increase in salinity levels resulted in a substantial decrease in root relative water content. The percent of germination was also affected by salinity level and cultivar and their interactions. The mean germination time differed among treatment media and cultivars and a significant interaction was observed between these two factors. According to the cluster analysis, ‘Chandler’ was classified as the most tolerant cultivar. ‘Hartley’, ‘Pedro’, and ‘Round de Montignac’ (‘RDM’) were also classified in another group (semisensitive), whereas ‘Vina’, ‘Serr’, and ‘Lara’ were classified as sensitive cultivars. With the increase in salt stress, resistant cultivars accumulated more potassium (K) and calcium, especially in their shoots. However, in the semitolerant cultivars, accumulation of K in the root was more than in the shoot. Differences in magnesium accumulation in roots and shoots of all samples were significant at all stress levels and were dependent on genotypes. Sodium levels in roots were higher than in the shoots in most cultivars, especially in the semisensitive and tolerant ones. There was a low correlation ( r 2 ≤ 0.15) between walnut seed traits (seed weight and kernel weight) and growth indices with respect to salinity tolerance.
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Claims 11
Claim · model-written summary
Increasing salinity substantially decreased root relative water content.
- Taxon
- Walnute1
- Treatment
- increase in salinity levelse0
- Outcome
- root relative water contente0
- Direction
- decreasee0
Not reportedComparator
Verbatim
e0“The increase in salinity levels resulted in a substantial decrease in root relative water content”
e1“Walnut ( J. regia L.)”
Claim · model-written summary
Germination percentage varied with salinity level, cultivar, and their interaction.
Not reportedDirection
Verbatim
e0“The percent of germination was also affected by salinity level and cultivar and their interactions”
e1“Walnut ( J. regia L.)”
Claim · model-written summary
Mean germination time differed across treatment media and cultivars, with a significant interaction.
Not reportedDirection
Verbatim
e0“The mean germination time differed among treatment media and cultivars and a significant interaction was observed between these two factors”
e1“Walnut ( J. regia L.)”
Claim · model-written summary
Chandler was classified as the most salt-tolerant cultivar.
Verbatim
e0“‘Chandler’ was classified as the most tolerant cultivar”
e1“Walnut ( J. regia L.)”
Claim · model-written summary
Hartley, Pedro, and Round de Montignac were classified as semisensitive.
Verbatim
e0“‘Hartley’, ‘Pedro’, and ‘Round de Montignac’ (‘RDM’) were also classified in another group (semisensitive)”
e1“Walnut ( J. regia L.)”
Claim · model-written summary
Vina, Serr, and Lara were classified as sensitive cultivars.
Verbatim
e0“‘Vina’, ‘Serr’, and ‘Lara’ were classified as sensitive cultivars”
e1“Walnut ( J. regia L.)”
Claim · model-written summary
Resistant cultivars accumulated more potassium and calcium with increasing salt stress, particularly in shoots.
Verbatim
e0“With the increase in salt stress, resistant cultivars accumulated more potassium (K) and calcium, especially in their shoots”
e1“Walnut ( J. regia L.)”
Claim · model-written summary
Semitolerant cultivars accumulated more potassium in roots than shoots.
Verbatim
e0“in the semitolerant cultivars, accumulation of K in the root was more than in the shoot”
e1“Walnut ( J. regia L.)”
Claim · model-written summary
Magnesium accumulation differed significantly between roots and shoots across stress levels and genotypes.
Not reportedDirection
Verbatim
e0“Differences in magnesium accumulation in roots and shoots of all samples were significant at all stress levels and were dependent on genotypes”
e1“Walnut ( J. regia L.)”
Claim · model-written summary
Sodium levels were higher in roots than shoots in most cultivars, especially semisensitive and tolerant ones.
Verbatim
e0“Sodium levels in roots were higher than in the shoots in most cultivars, especially in the semisensitive and tolerant ones”
e1“Walnut ( J. regia L.)”
Claim · model-written summary
Walnut seed weight and kernel weight had low correlation with growth indices for salinity tolerance.
Not reportedDirection
Verbatim
e0“There was a low correlation ( r 2 ≤ 0.15) between walnut seed traits (seed weight and kernel weight) and growth indices with respect to salinity tolerance”
The same questions in other papers
salinity · physiology: water · Juglans (walnuts)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- positive
- negative
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.