Paper · 2011 · Photochemistry and Photobiology

Alleviation of Adverse Effects of Drought Stress on Growth and Some Potential Physiological Attributes in Maize (Zea mays L.) by Seed Electromagnetic Treatment

Namra Javed; Muhammad Ashraf; Nudrat Aisha Akram; et al.

7
claims
14
verbatim quotes
53
citations
1
research areas
—
Not open access

Abstract

Effects of varying preseed magnetic treatments on growth, chlorophyll pigments, photosynthesis, water relation attributes, fluorescence and levels of osmoprotectants in maize plants were tested under normal and drought stress conditions. Seeds of two maize cultivars were treated with different (T0 [0 mT], T1 [100 mT for 5 min], T2 [100 mT for 10 min], T3 [150 mT for 5 min] and T4 [150 mT for 10 min]) electromagnetic treatments. Drought stress considerably suppressed growth, chlorophyll a and b pigments, leaf water potential, photosynthetic rate (A), stomatal conductance (g(s)) and substomatal CO(2) concentration (C(i)), while it increased leaf glycinebetaine and proline accumulation in both maize cultivars. However, pretreated seeds with different magnetic treatments significantly alleviated the drought-induced adverse effects on growth by improving chlorophyll a, A, E, g(s), C(i) and photochemical quenching and nonphotochemical quenching, while it had no significant effect on other attributes. However, different magnetic treatments negatively affected the g(s) and C(i) particularly in cv. Agaiti-2002 under drought stress conditions. Of all magnetic treatments, 100 and 150 mT for 10 min were most effective in alleviating the drought-induced adverse effects. Overall, preseed electromagnetic treatments could be used to minimize the drought-induced adverse effects on different crop plants.

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The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.

Claims 7

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Drought suppressed growth, chlorophyll pigments, water potential, and gas exchange in both cultivars.

Taxon
MaizeZea mayse0t0
Treatment
Drought stresse0t0
Outcome
growth, chlorophyll a and b pigments, leaf water potential, photosynthetic rate (A), stomatal conductance (g(s)) and substomatal CO(2) concentration (C(i))e0t0
Direction
suppressede0t0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Drought stress considerably suppressed growth, chlorophyll a and b pigments, leaf water potential, photosynthetic rate (A), stomatal conductance (g(s)) and substomatal CO(2) concentration (C(i))”

✓ located verbatim in the source · abstract, characters 432–626 · show in text ↑
t0

“Maize (Zea mays L.)”

✓ located verbatim in the source · title, characters 106–125 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Drought increased leaf glycinebetaine and proline accumulation in both cultivars.

Taxon
MaizeZea mayse0t0
Outcome
leaf glycinebetaine and proline accumulatione0t0
Direction
increasede0t0

Not reportedTreatmentComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“while it increased leaf glycinebetaine and proline accumulation in both maize cultivars”

✓ located verbatim in the source · abstract, characters 628–715 · show in text ↑
t0

“Maize (Zea mays L.)”

✓ located verbatim in the source · title, characters 106–125 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Magnetic seed pretreatments significantly alleviated drought effects on growth and improved chlorophyll a, gas exchange, and quenching.

Taxon
MaizeZea mayse0t0
Treatment
different magnetic treatmentse0t0
Outcome
growthe0t0
Direction
alleviatede0t0
Qualifier
improving chlorophyll a, A, E, g(s), C(i) and photochemical quenching and nonphotochemical quenchinge0t0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“pretreated seeds with different magnetic treatments significantly alleviated the drought-induced adverse effects on growth by improving chlorophyll a, A, E, g(s), C(i) and photochemical quenching and nonphotochemical quenching”

✓ located verbatim in the source · abstract, characters 726–952 · show in text ↑
t0

“Maize (Zea mays L.)”

✓ located verbatim in the source · title, characters 106–125 · show in text ↑
Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Magnetic treatments had no significant effect on other measured attributes.

Taxon
MaizeZea mayse0t0
Outcome
other attributese0t0
Direction
no significant effecte0t0

Not reportedTreatmentComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“while it had no significant effect on other attributes”

✓ located verbatim in the source · abstract, characters 954–1008 · show in text ↑
t0

“Maize (Zea mays L.)”

✓ located verbatim in the source · title, characters 106–125 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Magnetic treatments negatively affected stomatal conductance and substomatal carbon dioxide in Agaiti-2002 under drought.

Taxon
MaizeZea mayse0t0
Material
Agaiti-2002e0t0
Treatment
different magnetic treatmentse0t0
Outcome
g(s) and C(i)e0t0
Direction
negatively affectede0t0
Qualifier
under drought stress conditionse0t0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“different magnetic treatments negatively affected the g(s) and C(i) particularly in cv. Agaiti-2002 under drought stress conditions”

✓ located verbatim in the source · abstract, characters 1019–1150 · show in text ↑
t0

“Maize (Zea mays L.)”

✓ located verbatim in the source · title, characters 106–125 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The 100 and 150 mT treatments for 10 minutes were most effective against drought effects.

Taxon
MaizeZea mayse0t0
Treatment
100 and 150 mT for 10 mine0t0
Outcome
alleviating the drought-induced adverse effectse0t0
Direction
most effectivee0t0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“100 and 150 mT for 10 min were most effective in alleviating the drought-induced adverse effects”

✓ located verbatim in the source · abstract, characters 1180–1276 · show in text ↑
t0

“Maize (Zea mays L.)”

✓ located verbatim in the source · title, characters 106–125 · show in text ↑
Recommendationauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

The authors suggest preseed electromagnetic treatments to minimize drought damage in crops.

Taxon
MaizeZea mayse0t0
Treatment
preseed electromagnetic treatmentse0t0
Outcome
minimize the drought-induced adverse effectse0t0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“preseed electromagnetic treatments could be used to minimize the drought-induced adverse effects on different crop plants”

✓ located verbatim in the source · abstract, characters 1287–1408 · show in text ↑
t0

“Maize (Zea mays L.)”

✓ located verbatim in the source · title, characters 106–125 · show in text ↑

drought · physiology: photosynthesis · Zea mays (maize)Positive and negative results

121 papers: 13 positive, 108 negative or no effect

107 papers in the same direction as this paper · 13 in the opposite direction

  1. negative
  2. positive
  3. positive

117 papers more in this group

See all 121 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.