Abstract
Abstract Amino acids have various roles in plant metabolism, and exogenous application of amino acids may have benefits and stimulation effects on plant growth and quality. In this study, the growth and nutrient uptake of Romain lettuce ( Lactuca sativa subvar Sahara ) were evaluated under spray of glycine or glutamine at different concentrations of 0 (as control), 250, 500 and 1000 mg.L -1 , as well as a treatment of 250 mg.L -1 glycine+250 mg.L -1 glutamine. The results showed that there was significant increase in leaf total chlorophyll content under Gly250+Glu250, Gly250 and Glu1000 mg.L -1 treatments, and in leaf carotenoids content under 250 mg.L -1 glutamine spray compared with the control plants. Shoot fresh and dry weights were highest under 500 mg.L -1 glycine, whereas root fresh weight was highest under 250 mg.L -1 glycine spray. Foliar application of glycine and glutamine had no significant increase in leaf mineral concentrations except for iron, in which 1000 mg.L -1 Gly spray resulted in significantly higher leaf Fe concentration compared with the control plants. Leaf vitamin C was increased at 250 and particularly 500 mg.L -1 spray of glycine and glutamine compared with the control. Nevertheless, different amino acid treatments had no significant effect on plant height, leaf SPAD value, root dry weight, and leaf concentrations of N, K, Ca, Mg and Zn. The results indicate that foliar application of glycine and glutamine amino acids can have beneficial effects on lettuce growth, as higher fresh yield, leaf chlorophyll content and vitamin C were obtained by low to moderate concentrations of glycine and/or glutamine amino acids.
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Claims 12
Claim · model-written summary
Gly250+Glu250 foliar spray significantly increased leaf total chlorophyll content of lettuce compared with control.
- Taxon
- Lactuca sativa subvar Sahara
Lactuca sativae0 - Treatment
- Gly250+Glu250e1
- Outcome
- leaf total chlorophyll contente1
- Direction
- significant increasee1
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the growth and nutrient uptake of Romain lettuce ( Lactuca sativa subvar Sahara ) were evaluated under spray of glycine or glutamine”
e1“The results showed that there was significant increase in leaf total chlorophyll content under Gly250+Glu250, Gly250 and Glu1000 mg.L -1 treatments, and in leaf carotenoids content under 250 mg.L -1 glutamine spray compared with the control plants”
Claim · model-written summary
Gly250 foliar spray significantly increased leaf total chlorophyll content of lettuce compared with control.
- Taxon
- Lactuca sativa subvar SaharaLactuca sativae0
- Treatment
- Gly250e1
- Outcome
- leaf total chlorophyll contente1
- Direction
- significant increasee1
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the growth and nutrient uptake of Romain lettuce ( Lactuca sativa subvar Sahara ) were evaluated under spray of glycine or glutamine”
e1“The results showed that there was significant increase in leaf total chlorophyll content under Gly250+Glu250, Gly250 and Glu1000 mg.L -1 treatments, and in leaf carotenoids content under 250 mg.L -1 glutamine spray compared with the control plants”
Claim · model-written summary
Glu1000 foliar spray significantly increased leaf total chlorophyll content of lettuce compared with control.
- Taxon
- Lactuca sativa subvar SaharaLactuca sativae0
- Treatment
- Glu1000e1
- Outcome
- leaf total chlorophyll contente1
- Direction
- significant increasee1
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the growth and nutrient uptake of Romain lettuce ( Lactuca sativa subvar Sahara ) were evaluated under spray of glycine or glutamine”
e1“The results showed that there was significant increase in leaf total chlorophyll content under Gly250+Glu250, Gly250 and Glu1000 mg.L -1 treatments, and in leaf carotenoids content under 250 mg.L -1 glutamine spray compared with the control plants”
Claim · model-written summary
250 mg/L glutamine spray significantly increased leaf carotenoid content of lettuce compared with control.
- Taxon
- Lactuca sativa subvar SaharaLactuca sativae0
- Treatment
- 250 mg.L -1 glutamine spraye1
- Outcome
- leaf carotenoids contente1
- Direction
- significant increasee1
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the growth and nutrient uptake of Romain lettuce ( Lactuca sativa subvar Sahara ) were evaluated under spray of glycine or glutamine”
e1“The results showed that there was significant increase in leaf total chlorophyll content under Gly250+Glu250, Gly250 and Glu1000 mg.L -1 treatments, and in leaf carotenoids content under 250 mg.L -1 glutamine spray compared with the control plants”
Claim · model-written summary
500 mg/L glycine spray gave the highest shoot fresh and dry weights of lettuce.
- Taxon
- Lactuca sativa subvar SaharaLactuca sativae0
- Treatment
- 500 mg.L -1 glycinee2
- Outcome
- Shoot fresh and dry weightse2
- Direction
- higheste2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the growth and nutrient uptake of Romain lettuce ( Lactuca sativa subvar Sahara ) were evaluated under spray of glycine or glutamine”
e2“Shoot fresh and dry weights were highest under 500 mg.L -1 glycine, whereas root fresh weight was highest under 250 mg.L -1 glycine spray”
Claim · model-written summary
250 mg/L glycine spray gave the highest root fresh weight of lettuce.
- Taxon
- Lactuca sativa subvar SaharaLactuca sativae0
- Treatment
- 250 mg.L -1 glycine spraye2
- Outcome
- root fresh weighte2
- Direction
- higheste2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the growth and nutrient uptake of Romain lettuce ( Lactuca sativa subvar Sahara ) were evaluated under spray of glycine or glutamine”
e2“Shoot fresh and dry weights were highest under 500 mg.L -1 glycine, whereas root fresh weight was highest under 250 mg.L -1 glycine spray”
Claim · model-written summary
1000 mg/L glycine spray significantly increased leaf Fe concentration compared with control.
- Taxon
- Lactuca sativa subvar SaharaLactuca sativae0
- Treatment
- 1000 mg.L -1 Gly spraye3
- Outcome
- leaf Fe concentratione3
- Direction
- significantly highere3
- Comparator
- controle3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the growth and nutrient uptake of Romain lettuce ( Lactuca sativa subvar Sahara ) were evaluated under spray of glycine or glutamine”
e3“Foliar application of glycine and glutamine had no significant increase in leaf mineral concentrations except for iron, in which 1000 mg.L -1 Gly spray resulted in significantly higher leaf Fe concentration compared with the control plants”
Claim · model-written summary
Foliar glycine and glutamine did not significantly increase leaf mineral concentrations, except iron.
- Taxon
- Lactuca sativa subvar SaharaLactuca sativae0
- Treatment
- Foliar application of glycine and glutaminee3
- Outcome
- leaf mineral concentrationse3
- Direction
- no significant increasee3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the growth and nutrient uptake of Romain lettuce ( Lactuca sativa subvar Sahara ) were evaluated under spray of glycine or glutamine”
e3“Foliar application of glycine and glutamine had no significant increase in leaf mineral concentrations except for iron, in which 1000 mg.L -1 Gly spray resulted in significantly higher leaf Fe concentration compared with the control plants”
Claim · model-written summary
Glycine and glutamine sprays at 250 and 500 mg/L increased leaf vitamin C compared with control.
- Taxon
- Lactuca sativa subvar SaharaLactuca sativae0
- Treatment
- 250 and particularly 500 mg.L -1 spray of glycine and glutaminee4
- Outcome
- Leaf vitamin Ce4
- Direction
- increasede4
- Comparator
- controle4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the growth and nutrient uptake of Romain lettuce ( Lactuca sativa subvar Sahara ) were evaluated under spray of glycine or glutamine”
e4“Leaf vitamin C was increased at 250 and particularly 500 mg.L -1 spray of glycine and glutamine compared with the control”
Claim · model-written summary
Amino acid treatments had no significant effect on plant height, leaf SPAD value or root dry weight of lettuce.
- Taxon
- Lactuca sativa subvar SaharaLactuca sativae0
- Treatment
- different amino acid treatmentse5
- Outcome
- plant height, leaf SPAD value, root dry weighte5
- Direction
- no significant effecte5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the growth and nutrient uptake of Romain lettuce ( Lactuca sativa subvar Sahara ) were evaluated under spray of glycine or glutamine”
e5“different amino acid treatments had no significant effect on plant height, leaf SPAD value, root dry weight, and leaf concentrations of N, K, Ca, Mg and Zn”
Claim · model-written summary
Amino acid treatments had no significant effect on leaf N, K and Ca concentrations of lettuce.
- Taxon
- Lactuca sativa subvar SaharaLactuca sativae0
- Treatment
- different amino acid treatmentse5
- Outcome
- leaf concentrations of N, K, Cae5
- Direction
- no significant effecte5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the growth and nutrient uptake of Romain lettuce ( Lactuca sativa subvar Sahara ) were evaluated under spray of glycine or glutamine”
e5“different amino acid treatments had no significant effect on plant height, leaf SPAD value, root dry weight, and leaf concentrations of N, K, Ca, Mg and Zn”
Claim · model-written summary
Amino acid treatments had no significant effect on leaf Mg and Zn concentrations of lettuce.
- Taxon
- Lactuca sativa subvar SaharaLactuca sativae0
- Treatment
- different amino acid treatmentse5
- Outcome
- Mg and Zne5
- Direction
- no significant effecte5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the growth and nutrient uptake of Romain lettuce ( Lactuca sativa subvar Sahara ) were evaluated under spray of glycine or glutamine”
e5“different amino acid treatments had no significant effect on plant height, leaf SPAD value, root dry weight, and leaf concentrations of N, K, Ca, Mg and Zn”
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