Abstract
This study ai med to elucidate the effects of salinity on the growth of tall Fescue (Festuca arundina-cea) . Seedlings were cultured for 5 weeks under hydroponic conditions with nutrient solutions containing 0(CK) ,50 ,100 ,150 ,200 ,250 ,300 and,350 mmol/L NaCl . At several intervals over the study period the tillernumber ,dry matter and, K+and Na+content in top and root , were determined. Results showed that the tillernumber ,dry matter weight , K+content , K+/Na+and the transport selectivity of K+(SK+/Na+-transport) de-clined under high NaCl concentration, while Na+content wasincreasedin both shoots and roots .It was shownthat the depressive effect of NaCl stress on growth was more pronouncedin shoots thanin roots . The absorp-tion selectivity of K+was reduced mainly by NaCl concentrationin the nutrient solution. The transport selec-tivity of K+and Na+decreased significantly as the treat ment duration progressed.
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Claims 6
Claim · model-written summary
High NaCl lowered tiller number, dry matter weight and K+ content.
- Taxon
- Festuca arundinacea
Lolium arundinaceumt0 - Treatment
- high NaCl concentratione0
- Outcome
- tillernumber ,dry matter weight , K+contente0
- Direction
- de-clinede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the tillernumber ,dry matter weight , K+content , K+/Na+and the transport selectivity of K+(SK+/Na+-transport) de-clined under high NaCl concentration”
t0“Festuca arundinacea”
Claim · model-written summary
High NaCl lowered K+/Na+ and K+ transport selectivity.
- Taxon
- Festuca arundinaceaLolium arundinaceumt0
- Treatment
- high NaCl concentratione0
- Outcome
- K+/Na+and the transport selectivity of K+(SK+/Na+-transport)e0
- Direction
- de-clinede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“K+/Na+and the transport selectivity of K+(SK+/Na+-transport) de-clined under high NaCl concentration”
t0“Festuca arundinacea”
Claim · model-written summary
Na+ content increased in shoots and roots under high NaCl.
- Taxon
- Festuca arundinaceaLolium arundinaceumt0
- Organ / stage
- shoots and rootse0
- Treatment
- NaCle1
- Outcome
- Na+contente0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“while Na+content wasincreasedin both shoots and roots”
t0“Festuca arundinacea”
e1“the tillernumber ,dry matter weight , K+content , K+/Na+and the transport selectivity of K+(SK+/Na+-transport) de-clined under high NaCl concentration”
Claim · model-written summary
NaCl suppressed shoot growth more than root growth.
- Taxon
- Festuca arundinaceaLolium arundinaceumt0
- Organ / stage
- shootse0
- Treatment
- NaCl stresse0
- Outcome
- growthe0
- Direction
- more pronouncede0
- Comparator
- rootse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“depressive effect of NaCl stress on growth was more pronouncedin shoots thanin roots”
t0“Festuca arundinacea”
Claim · model-written summary
K+ absorption selectivity fell mainly with NaCl concentration.
- Taxon
- Festuca arundinaceaLolium arundinaceumt0
- Treatment
- NaCl concentratione0
- Outcome
- absorp-tion selectivity of K+e0
- Direction
- reducede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The absorp-tion selectivity of K+was reduced mainly by NaCl concentrationin the nutrient solution.”
t0“Festuca arundinacea”
Claim · model-written summary
K+ and Na+ transport selectivity decreased significantly with treatment duration.
- Taxon
- Festuca arundinaceaLolium arundinaceumt0
- Treatment
- treat ment duratione0
- Outcome
- transport selec-tivity of K+and Na+e0
- Direction
- decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The transport selec-tivity of K+and Na+decreased significantly as the treat ment duration progressed.”
t0“Festuca arundinacea”
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