Abstract
This study assesses the nutritional behavior of the new citrus rootstocks Forner-Alcaide no.5 (FA-5) and Forner-Alcaide no.13 (FA-13) under saline conditions compared to that of their parents, Cleopatra mandarin (CM) and Poncirus trifoliata (PT). Eighteen month-old plants grafted with Valencia orange scions were used in the experiment. The plants were grown in a greenhouse and irrigated over an eight-week period with nutrient solutions to which different amounts of sodium chloride (NaCl) had been added, namely 0, 20, 40 and 60 mM. Relative growth and the uptake of major mineral elements [nitrogen (N), phosphorus (P), potassium (K), calcium (Ca), and magnesium (Mg)] were then determined. It was noted that the reduction in relative growth caused by salt treatment was greater in plants grafted on PT than those on FA-13, FA-5 and CM. Increasing the salt level in the growth medium reduced the absorption of the above mineral elements in all scion-rootstock combinations. However, this decrease was generally more marked in plants grafted on PT than in those on CM and FA-5. Plants on FA-13 showed an intermediate behavior. Positive correlations were found between growth and mineral element uptake by salt treated plants. Nutrient uptake was also plotted against chloride (Cl) and sodium (Na) concentrations in leaves and roots at increasing salt levels. This showed that N absorption was closely correlated (inversely) with Cl content in leaves, whereas K, Ca and Mg uptakes were correlated (inversely) with Na concentration in roots. This suggests that the accumulation of saline ions impacts growth and nutrient uptake by citrus plants.
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Claims 8
Claim · model-written summary
Salt reduced relative growth more on PT than on FA-13, FA-5 and CM.
- Material
- PTe1
- Treatment
- salt treatmente1
- Outcome
- relative growthe1
- Direction
- greatere1
- Comparator
- FA-13, FA-5 and CMe1
CitrusOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“new citrus rootstocks Forner-Alcaide no.5 (FA-5) and Forner-Alcaide no.13 (FA-13)”
e1“the reduction in relative growth caused by salt treatment was greater in plants grafted on PT than those on FA-13, FA-5 and CM.”
Claim · model-written summary
Increasing salt reduced mineral element absorption in all scion-rootstock combinations.
- Treatment
- Increasing the salt level in the growth mediume1
- Outcome
- absorption of the above mineral elementse1
- Direction
- reducede1
- Qualifier
- all scion-rootstock combinationse1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“new citrus rootstocks Forner-Alcaide no.5 (FA-5) and Forner-Alcaide no.13 (FA-13)”
e1“Increasing the salt level in the growth medium reduced the absorption of the above mineral elements in all scion-rootstock combinations.”
e2“major mineral elements [nitrogen (N), phosphorus (P), potassium (K), calcium (Ca), and magnesium (Mg)]”
Claim · model-written summary
The decrease in mineral uptake was generally greater on PT than CM and FA-5.
- Material
- PTe1
- Outcome
- absorption of the above mineral elementse2
- Direction
- more markede1
- Comparator
- CM and FA-5e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“new citrus rootstocks Forner-Alcaide no.5 (FA-5) and Forner-Alcaide no.13 (FA-13)”
e1“this decrease was generally more marked in plants grafted on PT than in those on CM and FA-5.”
e2“reduced the absorption of the above mineral elements”
Claim · model-written summary
FA-13 showed intermediate mineral uptake response under salt.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“new citrus rootstocks Forner-Alcaide no.5 (FA-5) and Forner-Alcaide no.13 (FA-13)”
e1“Plants on FA-13 showed an intermediate behavior.”
e2“reduced the absorption of the above mineral elements”
Claim · model-written summary
Growth correlated positively with mineral element uptake under salt.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“new citrus rootstocks Forner-Alcaide no.5 (FA-5) and Forner-Alcaide no.13 (FA-13)”
e1“Positive correlations were found between growth and mineral element uptake by salt treated plants.”
Claim · model-written summary
N absorption was inversely correlated with leaf Cl content.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“new citrus rootstocks Forner-Alcaide no.5 (FA-5) and Forner-Alcaide no.13 (FA-13)”
e1“N absorption was closely correlated (inversely) with Cl content in leaves, whereas K, Ca and Mg uptakes were correlated (inversely) with Na concentration in roots.”
Claim · model-written summary
K, Ca and Mg uptake was inversely correlated with root Na concentration.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“new citrus rootstocks Forner-Alcaide no.5 (FA-5) and Forner-Alcaide no.13 (FA-13)”
e1“N absorption was closely correlated (inversely) with Cl content in leaves, whereas K, Ca and Mg uptakes were correlated (inversely) with Na concentration in roots.”
Claim · model-written summary
The authors suggest saline ion accumulation affects citrus growth and nutrient uptake.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This suggests that the accumulation of saline ions impacts growth and nutrient uptake by citrus plants.”
The same questions in other papers
salinity · nutrient: content · CitrusPositive and negative results
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See all 17 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.