Abstract
To decrease adverse effects of water deficit is foliar application with chemical agents such as silicon. However, there is low information on the influence of silicon on alfalfa under drought stress conditions. Thus, the current study was conducted to assessment the effect of different silicon concentrations (0, 1 and 2 mili Molar concentration) on alfalfa growth trend and biochemical traits, which grown under five level of irrigation regimes (100% as control, 85%, 70%, 55% and 40% field capacity; FC) according factorial experiment based on completely randomized design with four replication. The results showed that plant height, dry weight, chlorophyll a and b were reduced in response to water deficit; while water deficit increased chlorophyll a to b ratio as well as activity of superoxide dismutase and catalase in alfalfa crop. Also, water deficit up to 55% FC increased leaf silicon concentration, free proline, total soluble protein and peroxidase; however, severe water stress reduced them. Despite negative impact of water deficit, silicon application increased plant height, dry weight, soluble protein and three antioxidant enzymes as well as leaf silicon concentration. The positive effect of silicon on the most of the measured traits was greater at 2 mM than 1mM concentration, which might be due to higher silicon absorption at higher concentration. Alleviation ability of silicon was greater under severe water deficit compared to no or light water stress conditions. Our results suggested that although water deficit reduced growth and caused some changes in biochemical traits; silicon application, especially at 2mM concentration can be advised to alleviate some of the negative impact of water deficit.
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Claims 12
Claim · model-written summary
Water deficit reduced plant height and dry weight of alfalfa compared with full irrigation.
- Taxon
- Medicago sativa L.
Medicago sativat0 - Treatment
- water deficite1
- Outcome
- plant height, dry weighte1
- Direction
- reducede1
- Comparator
- 100% as controle3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Changes in Alfalfa (Medicago sativa L.) Growth and Biochemical Traits in Response to Silicon Application under Different Irrigation Regime”
e1“plant height, dry weight, chlorophyll a and b were reduced in response to water deficit”
e3“(100% as control, 85%, 70%, 55% and 40% field capacity; FC)”
Claim · model-written summary
Water deficit reduced chlorophyll a and b of alfalfa compared with full irrigation.
- Taxon
- Medicago sativa L.Medicago sativat0
- Treatment
- water deficite1
- Outcome
- chlorophyll a and be1
- Direction
- reducede1
- Comparator
- 100% as controle3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Changes in Alfalfa (Medicago sativa L.) Growth and Biochemical Traits in Response to Silicon Application under Different Irrigation Regime”
e1“plant height, dry weight, chlorophyll a and b were reduced in response to water deficit”
e3“(100% as control, 85%, 70%, 55% and 40% field capacity; FC)”
Claim · model-written summary
Water deficit increased the chlorophyll a to b ratio of alfalfa compared with full irrigation.
- Taxon
- Medicago sativa L.Medicago sativat0
- Treatment
- water deficite2
- Outcome
- chlorophyll a to b ratioe2
- Direction
- increasede2
- Comparator
- 100% as controle3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Changes in Alfalfa (Medicago sativa L.) Growth and Biochemical Traits in Response to Silicon Application under Different Irrigation Regime”
e2“water deficit increased chlorophyll a to b ratio as well as activity of superoxide dismutase and catalase in alfalfa crop”
e3“(100% as control, 85%, 70%, 55% and 40% field capacity; FC)”
Claim · model-written summary
Water deficit increased superoxide dismutase and catalase activity in alfalfa compared with full irrigation.
- Taxon
- Medicago sativa L.Medicago sativat0
- Treatment
- water deficite2
- Outcome
- activity of superoxide dismutase and catalasee2
- Direction
- increasede2
- Comparator
- 100% as controle3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Changes in Alfalfa (Medicago sativa L.) Growth and Biochemical Traits in Response to Silicon Application under Different Irrigation Regime”
e2“water deficit increased chlorophyll a to b ratio as well as activity of superoxide dismutase and catalase in alfalfa crop”
e3“(100% as control, 85%, 70%, 55% and 40% field capacity; FC)”
Claim · model-written summary
Water deficit up to 55% field capacity increased leaf silicon concentration of alfalfa.
- Taxon
- Medicago sativa L.Medicago sativat0
- Treatment
- water deficit up to 55% FCe5
- Outcome
- leaf silicon concentratione5
- Direction
- increasede5
- Comparator
- 100% as controle3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Changes in Alfalfa (Medicago sativa L.) Growth and Biochemical Traits in Response to Silicon Application under Different Irrigation Regime”
e3“(100% as control, 85%, 70%, 55% and 40% field capacity; FC)”
e5“water deficit up to 55% FC increased leaf silicon concentration, free proline, total soluble protein and peroxidase”
Claim · model-written summary
Water deficit up to 55% field capacity increased free proline, total soluble protein and peroxidase in alfalfa.
- Taxon
- Medicago sativa L.Medicago sativat0
- Treatment
- water deficit up to 55% FCe5
- Outcome
- free proline, total soluble protein and peroxidasee5
- Direction
- increasede5
- Comparator
- 100% as controle3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Changes in Alfalfa (Medicago sativa L.) Growth and Biochemical Traits in Response to Silicon Application under Different Irrigation Regime”
e3“(100% as control, 85%, 70%, 55% and 40% field capacity; FC)”
e5“water deficit up to 55% FC increased leaf silicon concentration, free proline, total soluble protein and peroxidase”
Claim · model-written summary
Severe water stress reduced free proline, total soluble protein and peroxidase in alfalfa.
- Taxon
- Medicago sativa L.Medicago sativat0
- Treatment
- severe water stresse7
- Outcome
- free proline, total soluble protein and peroxidasee5
- Direction
- reducede7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Changes in Alfalfa (Medicago sativa L.) Growth and Biochemical Traits in Response to Silicon Application under Different Irrigation Regime”
e5“water deficit up to 55% FC increased leaf silicon concentration, free proline, total soluble protein and peroxidase”
e7“however, severe water stress reduced them”
Claim · model-written summary
Silicon application increased plant height, dry weight and soluble protein of alfalfa under water deficit.
- Taxon
- Medicago sativa L.Medicago sativat0
- Treatment
- silicon applicatione1
- Outcome
- plant height, dry weight, soluble proteine1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Changes in Alfalfa (Medicago sativa L.) Growth and Biochemical Traits in Response to Silicon Application under Different Irrigation Regime”
e1“Despite negative impact of water deficit, silicon application increased plant height, dry weight, soluble protein and three antioxidant enzymes as well as leaf silicon concentration”
Claim · model-written summary
Silicon application increased three antioxidant enzymes and leaf silicon concentration of alfalfa under water deficit.
- Taxon
- Medicago sativa L.Medicago sativat0
- Treatment
- silicon applicatione1
- Outcome
- three antioxidant enzymes as well as leaf silicon concentratione1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Changes in Alfalfa (Medicago sativa L.) Growth and Biochemical Traits in Response to Silicon Application under Different Irrigation Regime”
e1“Despite negative impact of water deficit, silicon application increased plant height, dry weight, soluble protein and three antioxidant enzymes as well as leaf silicon concentration”
Claim · model-written summary
The positive effect of silicon was greater at 2 mM than at 1 mM concentration.
- Taxon
- Medicago sativa L.Medicago sativat0
- Treatment
- silicone1
- Outcome
- positive effect of silicone1
- Direction
- greatere1
- Comparator
- 1mM concentratione1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Changes in Alfalfa (Medicago sativa L.) Growth and Biochemical Traits in Response to Silicon Application under Different Irrigation Regime”
e1“The positive effect of silicon on the most of the measured traits was greater at 2 mM than 1mM concentration”
Claim · model-written summary
Silicon alleviation ability was greater under severe water deficit than under no or light water stress.
- Taxon
- Medicago sativa L.Medicago sativat0
- Treatment
- severe water deficite2
- Outcome
- Alleviation ability of silicone2
- Direction
- greatere2
- Comparator
- no or light water stress conditionse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Changes in Alfalfa (Medicago sativa L.) Growth and Biochemical Traits in Response to Silicon Application under Different Irrigation Regime”
e2“Alleviation ability of silicon was greater under severe water deficit compared to no or light water stress conditions”
Claim · model-written summary
Silicon application, especially at 2 mM, can be advised to alleviate the negative impact of water deficit on alfalfa.
- Taxon
- Medicago sativa L.Medicago sativat0
- Outcome
- silicon application, especially at 2mM concentratione3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Changes in Alfalfa (Medicago sativa L.) Growth and Biochemical Traits in Response to Silicon Application under Different Irrigation Regime”
e3“silicon application, especially at 2mM concentration can be advised to alleviate some of the negative impact of water deficit”
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See all 10 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.