Abstract
In order to investigate chitosan and magnesium-nano fertilizers’ impact on photosynthetic pigments, protein, proline, and soluble sugar contents of sesame under irrigation cut-off treatment, a split-factorial experiment was conducted based on randomized blocks with three replications. Irrigation cut-off based on BBCH scale as the main factor (normal irrigation and irrigation cut-off in 6 and 75 BBCH stages). Secondary factors as subplot included Oltan and Dashtestan-2 sesame cultivars, and foliar application of Mg-nano fertilizer (application and non-application) and chitosan (control, foliar application of 4.8 g.l-1 in 65 BBCH and 6.4 g.l-1 in 75 BBCH stages). Based on the results, severe drought stress (irrigation up to 65 BBCH) resulted in reducing the mean of chlorophyll a, b, and total compared to the control treatment. Chitosan foliar application yielded more desirable results compared to those of Mg-nano fertilizer and caused an increase in the mean traits of chlorophyll a, b, total, carotenoid, protein, proline, and soluble sugar. In addition, irrigation up to 65 BBCH (severe drought stress) and non-application of nanofertilizer led to a decrease in chlorophyll content and physiological damage. Based on the findings, chitosan biopolymer, as a natural substance, as well as co-application of these two can be an appropriate action in order to decrease the plant damage under drought stress regarding the role of Mg in chlorophyll structure and a large number of the plant vital enzymes.
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Claims 5
Claim · model-written summary
Severe drought reduced chlorophyll a, b and total relative to control.
- Taxon
- sesame
Sesamum indicumt0 - Treatment
- severe drought stress (irrigation up to 65 BBCH)e0
- Outcome
- chlorophyll a, b, and totale0
- Direction
- reducinge0
- Comparator
- control treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“severe drought stress (irrigation up to 65 BBCH) resulted in reducing the mean of chlorophyll a, b, and total compared to the control treatment”
t0“sesame (Sesamum indicum L.)”
Claim · model-written summary
Chitosan increased chlorophyll a, b and total and carotenoid compared with Mg-nano fertilizer.
- Taxon
- sesameSesamum indicumt0
- Treatment
- Chitosan foliar applicatione0
- Outcome
- chlorophyll a, b, total, carotenoide0
- Direction
- increasee0
- Comparator
- Mg-nano fertilizere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Chitosan foliar application yielded more desirable results compared to those of Mg-nano fertilizer and caused an increase in the mean traits of chlorophyll a, b, total, carotenoid, protein, proline, and soluble sugar”
t0“sesame (Sesamum indicum L.)”
Claim · model-written summary
Chitosan increased protein, proline and soluble sugar compared with Mg-nano fertilizer.
- Taxon
- sesameSesamum indicumt0
- Treatment
- Chitosan foliar applicatione0
- Outcome
- protein, proline, and soluble sugare0
- Direction
- increasee0
- Comparator
- Mg-nano fertilizere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Chitosan foliar application yielded more desirable results compared to those of Mg-nano fertilizer and caused an increase in the mean traits of chlorophyll a, b, total, carotenoid, protein, proline, and soluble sugar”
t0“sesame (Sesamum indicum L.)”
Claim · model-written summary
Severe drought with no nanofertilizer decreased chlorophyll content and caused physiological damage.
- Taxon
- sesameSesamum indicumt0
- Treatment
- irrigation up to 65 BBCH (severe drought stress) and non-application of nanofertilizere0
- Outcome
- chlorophyll contente0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“irrigation up to 65 BBCH (severe drought stress) and non-application of nanofertilizer led to a decrease in chlorophyll content and physiological damage”
t0“sesame (Sesamum indicum L.)”
Claim · model-written summary
The authors recommend chitosan or coapplication with magnesium to reduce drought damage.
- Taxon
- sesameSesamum indicumt0
- Treatment
- chitosan biopolymere0
- Outcome
- decrease the plant damage under drought stresse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“chitosan biopolymer, as a natural substance, as well as co-application of these two can be an appropriate action in order to decrease the plant damage under drought stress”
t0“sesame (Sesamum indicum L.)”
The same questions in other papers
application · physiology: osmolytes · Sesamum indicum (sesame)Results agree
1 paper in the same direction as this paper
- positive
irrigation · physiology: pigments · Sesamum indicum (sesame)Results agree
2 papers in the same direction as this paper
- negative
- negative
drought · physiology: pigments · Sesamum indicum (sesame)Results agree
3 papers in the same direction as this paper
- negative
- negative
- negative
application · physiology: pigments · Sesamum indicum (sesame)Results agree
4 papers in the same direction as this paper
- positive
- positive
- positive
1 paper more in this group
See all 5 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.