Abstract
Pomegranate (Punica granatum L.) is widely grown in arid and semiarid regions, where the salinization may have developed through irrigation. A greenhouse experiment was conducted to investigate NaCl stress on growth, photosynthesis, and nutrients of 18 pomegranate cultivars. One group was irrigated twice a week with a nutrient solution. The other group was watered twice a week with the same nutrient solution and 200 mM NaCl for five weeks. Dry weight, shoot length, new shoot number, root length and number, leaf area, leaf relative water content, and net photosynthesis of salt-treated plants were negatively impacted by salt stress, and there was a significant difference among cultivars. Few foliar damages were observed. Na content of plants significantly increased in all cultivars, while P, S, K, Ca, Mg, Si, Al, Zn content of plants decreased under salt stress. Fe, Mn, and Cu content increased in most cultivars. Pomegranate accumulated supraoptimal Na mostly in roots and transported more K and Ca to shoots, which was attributed to maintaining a higher ratio of K/Na and Ca/Na in the aerial part of plants. Ten of the 18 cultivars were considered salt-tolerant, which would offer a reference for pomegranate cultivation on saline lands.
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Claims 8
Claim · model-written summary
Salt stress reduced pomegranate growth and leaf water and photosynthesis traits.
- Taxon
- Pomegranate
Punica granatumt0 - Treatment
- salt stresse0
- Outcome
- leaf relative water content, and net photosynthesise0
- Direction
- negatively impactede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dry weight, shoot length, new shoot number, root length and number, leaf area, leaf relative water content, and net photosynthesis of salt-treated plants were negatively impacted by salt stress”
t0“Pomegranate”
Claim · model-written summary
Salt responses differed significantly among cultivars.
- Taxon
- PomegranatePunica granatumt0
- Outcome
- difference among cultivarse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there was a significant difference among cultivars”
t0“Pomegranate”
Claim · model-written summary
Na content rose in every cultivar under salt stress.
- Taxon
- PomegranatePunica granatumt0
- Treatment
- salt stresse1
- Outcome
- Na contente0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Na content of plants significantly increased in all cultivars”
t0“Pomegranate”
e1“under salt stress”
Claim · model-written summary
P, S, K, Ca, Mg, Si, Al and Zn content declined under salt stress.
- Taxon
- PomegranatePunica granatumt0
- Treatment
- salt stresse0
- Outcome
- P, S, K, Ca, Mg, Si, Al, Zn contente0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“P, S, K, Ca, Mg, Si, Al, Zn content of plants decreased under salt stress”
t0“Pomegranate”
Claim · model-written summary
Fe, Mn and Cu content increased in most cultivars.
- Taxon
- PomegranatePunica granatumt0
- Treatment
- salt stresse1
- Outcome
- Fe, Mn, and Cu contente0
- Direction
- increasede0
- Qualifier
- most cultivarse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fe, Mn, and Cu content increased in most cultivars”
t0“Pomegranate”
e1“under salt stress”
Claim · model-written summary
Pomegranate accumulated supraoptimal Na mainly in roots.
- Taxon
- PomegranatePunica granatume0
- Organ / stage
- rootse0
- Outcome
- accumulated supraoptimal Nae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pomegranate accumulated supraoptimal Na mostly in roots”
Claim · model-written summary
Pomegranate transported more K and Ca to shoots.
- Taxon
- PomegranatePunica granatumt0
- Organ / stage
- shootse0
- Outcome
- transported more K and Cae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“transported more K and Ca to shoots”
t0“Pomegranate”
Claim · model-written summary
Ten of 18 cultivars were classified as salt tolerant.
- Taxon
- PomegranatePunica granatumt0
- Outcome
- salt-tolerante0
- Value
- Ten of the 18 cultivarse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ten of the 18 cultivars were considered salt-tolerant”
t0“Pomegranate”
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