Abstract
Peanuts ( Arachis hypogaea L. cv. Shulamit) grown with NO 3 − and saline water in hydroponics responded positively to addition of nitrogen (N) in their vegetative growth, but not in desert dune sand. In order to clarify these conflicting results, peanut plants were grown in a greenhouse pot experiment with fine calcareous sand. The nutrient solution contained 0 or 50 m M NaCl and 2 or 6 m M N in the form of Ca(NO 3 ) 2 , NH 4 NO 3 or (NH 4 ) 2 SO 4 . Three replicates were harvested after 48 days (beginning of reproductive stage) and three after 109 days (pod filling). In addition, gynophores were treated with 0, 50, 100, 150 or 200 m M NaCl outside the growth pot to check their sensitivity to salt. Shoot dry weight became greater with increasing NH 4 + /NO 3 − ratio. Increasing the N concentration from 2 to 6 m M did not change shoot dry weight of the NH 4 NO 3 or NH 4 + ‐fed plants, but caused a reduction in shoot dry weight of NO 3 − ‐fed plants. Shoot dry weight was not affected by increasing the NaCl concentration to 50 m M . Salt caused an increase in the number of gynophores per plant and a reduction of the mean pod weight. A NaCl concentration of 100 m M and above reduced gynophore vitality. It is concluded that the salt sensitivity of peanut plants resides mainly in the sensitivity of the reproductive organs.
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Claims 8
Claim · model-written summary
Peanut shoot dry weight increased with a higher NH4+/NO3- ratio.
- Taxon
- Arachis hypogaea
Arachis hypogaeae0 - Treatment
- NH 4 + /NO 3 − ratioe1
- Outcome
- Shoot dry weighte1
- Direction
- greatere1
- Setting
- greenhouse pot experimente2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Peanuts ( Arachis hypogaea L. cv. Shulamit)”
e1“Shoot dry weight became greater with increasing NH 4 + /NO 3 − ratio”
e2“peanut plants were grown in a greenhouse pot experiment with fine calcareous sand”
Claim · model-written summary
Raising N concentration from 2 to 6 mM did not change peanut shoot dry weight in NH4NO3 or NH4+-fed plants.
- Taxon
- Arachis hypogaeaArachis hypogaeae0
- Treatment
- Increasing the N concentration from 2 to 6 m Me1
- Outcome
- shoot dry weighte1
- Direction
- did not changee1
- Setting
- greenhouse pot experimente2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Peanuts ( Arachis hypogaea L. cv. Shulamit)”
e1“Increasing the N concentration from 2 to 6 m M did not change shoot dry weight of the NH 4 NO 3 or NH 4 + ‐fed plants”
e2“peanut plants were grown in a greenhouse pot experiment with fine calcareous sand”
Claim · model-written summary
Raising N concentration from 2 to 6 mM reduced peanut shoot dry weight in NO3--fed plants.
- Taxon
- Arachis hypogaeaArachis hypogaeae0
- Treatment
- Increasing the N concentration from 2 to 6 m Me1
- Outcome
- shoot dry weighte1
- Direction
- reductione1
- Setting
- greenhouse pot experimente2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Peanuts ( Arachis hypogaea L. cv. Shulamit)”
e1“Increasing the N concentration from 2 to 6 m M did not change shoot dry weight of the NH 4 NO 3 or NH 4 + ‐fed plants, but caused a reduction in shoot dry weight of NO 3 − ‐fed plants”
e2“peanut plants were grown in a greenhouse pot experiment with fine calcareous sand”
Claim · model-written summary
Increasing NaCl to 50 mM did not affect peanut shoot dry weight.
- Taxon
- Arachis hypogaeaArachis hypogaeae0
- Treatment
- increasing the NaCl concentration to 50 m Me1
- Outcome
- Shoot dry weighte1
- Direction
- not affectede1
- Setting
- greenhouse pot experimente2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Peanuts ( Arachis hypogaea L. cv. Shulamit)”
e1“Shoot dry weight was not affected by increasing the NaCl concentration to 50 m M”
e2“peanut plants were grown in a greenhouse pot experiment with fine calcareous sand”
Claim · model-written summary
Salt increased the number of gynophores per peanut plant.
- Taxon
- Arachis hypogaeaArachis hypogaeae0
- Organ / stage
- gynophorese1
- Treatment
- Salte1
- Outcome
- number of gynophores per plante1
- Direction
- increasee1
- Setting
- greenhouse pot experimente2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Peanuts ( Arachis hypogaea L. cv. Shulamit)”
e1“Salt caused an increase in the number of gynophores per plant and a reduction of the mean pod weight”
e2“peanut plants were grown in a greenhouse pot experiment with fine calcareous sand”
Claim · model-written summary
Salt reduced the mean pod weight of peanut.
- Taxon
- Arachis hypogaeaArachis hypogaeae0
- Treatment
- Salte1
- Outcome
- mean pod weighte1
- Direction
- reductione1
- Setting
- greenhouse pot experimente2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Peanuts ( Arachis hypogaea L. cv. Shulamit)”
e1“Salt caused an increase in the number of gynophores per plant and a reduction of the mean pod weight”
e2“peanut plants were grown in a greenhouse pot experiment with fine calcareous sand”
Claim · model-written summary
A NaCl concentration of 100 mM and above reduced peanut gynophore vitality.
- Taxon
- Arachis hypogaeaArachis hypogaeae0
- Organ / stage
- gynophoree1
- Treatment
- A NaCl concentration of 100 m M and abovee1
- Outcome
- gynophore vitalitye1
- Direction
- reducede1
- Setting
- greenhouse pot experimente2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Peanuts ( Arachis hypogaea L. cv. Shulamit)”
e1“A NaCl concentration of 100 m M and above reduced gynophore vitality”
e2“peanut plants were grown in a greenhouse pot experiment with fine calcareous sand”
Claim · model-written summary
The authors conclude that salt sensitivity of peanut resides mainly in the sensitivity of its reproductive organs.
- Taxon
- Arachis hypogaeaArachis hypogaeae0
- Organ / stage
- reproductive organse1
- Outcome
- salt sensitivitye1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Peanuts ( Arachis hypogaea L. cv. Shulamit)”
e1“It is concluded that the salt sensitivity of peanut plants resides mainly in the sensitivity of the reproductive organs”
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See all 14 papers →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.