Paper · 2012 · Acta agriculturae Slovenica

Induction of drought tolerance with seed priming in wheat cultivars (Triticum aestivum L.)

Alireza Eivazi

15
claims
26
verbatim quotes
18
citations
2
research areas
✓
Open access

Abstract

Delay in sowing and low precipitation (<300mm annual) in wheat (Triticum aestivum L.) farming is the major problem in the irrigated and rainfall lands of Iran. A factorial experiment for evaluating the effects of seed priming on wheat cultivars was carried out under laboratory, greenhouse and at two field conditions during seasons of 2008-2010. Arrangement of treatments were Zarrin, Shariar, Sardary and Azar cultivars as A factor, and priming treatments including distilled water (DW), osmotic solutions (10% PEG, 2.5% KCl, 4% MN, 10% Urea, 5% NaCl W/V) and plant growth inducers (20 ppm IAA, 1000 ppm CCC) with non-primed seed as a control established B factor. During the second year of field experiment two separate treatments were done under drought stress and well watered conditions. Drought stress was withheld by irrigation at booting stage of plants. Maximum amount of absorbed water was determined in cultivar Shariar, 15.5 g DW. Seed weight of all cultivars increased the most when primed with CCC and IAA. Irrespective of the cultivar seedlings related traits revealed that treatment with CCC increased plumule and radical dry weights (11.5 and 8.0 mg) and their lengths (17.2 and 17.8 cm). In opposite, urea pretreatment had negative effects on seedlings growth. All priming treatments increased grain yield and its components, chlorophyll content and nitrogen absorbed under field and green house conditions in four cultivars in comparison to control. Plants arising from seeds primed with potassium chloride under drought stress had the lowest percentage of variation for traits such as relative water content (-9.3%), total dry matter (-10.7%) and grain yield (-4.0%) in comparison with well watered plants. Potassium chloride improved drought tolerance at all wheat cultivars. There were significant correlations between grain yield at primed with KCl and following wheat traits: number of spikes per square meter (0.91**), number of grains per spike (0.92**) and total dry matter (0.79*). Therefore, it seems that these traits could be used as indirect criteria for selection of high grain yield of cultivars for primed seed.

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Claims 15

Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Shariar had maximum absorbed water of 15.5 g DW.

Material
Shariare0
Outcome
absorbed watere0
Direction
Maximume0
Value
15.5 g DWe0

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Maximum amount of absorbed water was determined in cultivar Shariar, 15.5 g DW.”

✓ located verbatim in the source · abstract, characters 864–943 · show in text ↑
t0

“wheat cultivars (Triticum aestivum L.)”

✓ located verbatim in the source · title, characters 52–90 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

CCC and IAA priming maximized seed weight across cultivars.

Treatment
CCC and IAAe0
Outcome
Seed weighte0
Direction
increased the moste0

Not reportedComparator

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Seed weight of all cultivars increased the most when primed with CCC and IAA.”

✓ located verbatim in the source · abstract, characters 944–1021 · show in text ↑
t0

“wheat cultivars (Triticum aestivum L.)”

✓ located verbatim in the source · title, characters 52–90 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

CCC increased seedling plumule and radicle dry weights.

Treatment
CCCe0
Outcome
plumule and radical dry weightse0
Direction
increasede0
Value
11.5 and 8.0 mge0

Not reportedComparator

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“treatment with CCC increased plumule and radical dry weights (11.5 and 8.0 mg)”

✓ located verbatim in the source · abstract, characters 1090–1168 · show in text ↑
t0

“wheat cultivars (Triticum aestivum L.)”

✓ located verbatim in the source · title, characters 52–90 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

CCC increased seedling plumule and radicle lengths.

Treatment
CCCe0
Outcome
their lengthse0
Direction
increasede0
Value
17.2 and 17.8 cme0

Not reportedComparator

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“treatment with CCC increased plumule and radical dry weights (11.5 and 8.0 mg) and their lengths (17.2 and 17.8 cm).”

✓ located verbatim in the source · abstract, characters 1090–1206 · show in text ↑
t0

“wheat cultivars (Triticum aestivum L.)”

✓ located verbatim in the source · title, characters 52–90 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Urea pretreatment reduced seedling growth.

Treatment
urea pretreatmente0
Outcome
seedlings growthe0

Not reportedComparatorDirection

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“urea pretreatment had negative effects on seedlings growth.”

✓ located verbatim in the source · abstract, characters 1220–1279 · show in text ↑
t0

“wheat cultivars (Triticum aestivum L.)”

✓ located verbatim in the source · title, characters 52–90 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

All priming treatments increased grain yield and its components versus control.

Treatment
All priming treatmentse0
Outcome
grain yield and its componentse0
Direction
increasede0
Comparator
controle0

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“All priming treatments increased grain yield and its components, chlorophyll content and nitrogen absorbed under field and green house conditions in four cultivars in comparison to control.”

✓ located verbatim in the source · abstract, characters 1280–1469 · show in text ↑
t0

“wheat cultivars (Triticum aestivum L.)”

✓ located verbatim in the source · title, characters 52–90 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

All priming treatments increased chlorophyll content and nitrogen absorbed versus control.

Treatment
All priming treatmentse0
Outcome
chlorophyll content and nitrogen absorbede0
Direction
increasede0
Comparator
controle0

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“All priming treatments increased grain yield and its components, chlorophyll content and nitrogen absorbed under field and green house conditions in four cultivars in comparison to control.”

✓ located verbatim in the source · abstract, characters 1280–1469 · show in text ↑
t0

“wheat cultivars (Triticum aestivum L.)”

✓ located verbatim in the source · title, characters 52–90 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

KCl priming under drought gave the lowest variation in relative water content compared with watered plants.

Treatment
potassium chloridee0
Outcome
relative water contente0
Direction
loweste0
Value
-9.3%e0
Comparator
well watered plantse0

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Plants arising from seeds primed with potassium chloride under drought stress had the lowest percentage of variation for traits such as relative water content (-9.3%), total dry matter (-10.7%) and grain yield (-4.0%) in comparison with well watered plants.”

✓ located verbatim in the source · abstract, characters 1470–1727 · show in text ↑
t0

“wheat cultivars (Triticum aestivum L.)”

✓ located verbatim in the source · title, characters 52–90 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

KCl priming under drought gave the lowest variation in total dry matter.

Treatment
potassium chloridee0
Outcome
total dry mattere0
Direction
loweste0
Value
-10.7%e0
Comparator
well watered plantse0

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Plants arising from seeds primed with potassium chloride under drought stress had the lowest percentage of variation for traits such as relative water content (-9.3%), total dry matter (-10.7%) and grain yield (-4.0%) in comparison with well watered plants.”

✓ located verbatim in the source · abstract, characters 1470–1727 · show in text ↑
t0

“wheat cultivars (Triticum aestivum L.)”

✓ located verbatim in the source · title, characters 52–90 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

KCl priming under drought gave the lowest variation in grain yield.

Treatment
potassium chloridee0
Outcome
grain yielde0
Direction
loweste0
Value
-4.0%e0
Comparator
well watered plantse0

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Plants arising from seeds primed with potassium chloride under drought stress had the lowest percentage of variation for traits such as relative water content (-9.3%), total dry matter (-10.7%) and grain yield (-4.0%) in comparison with well watered plants.”

✓ located verbatim in the source · abstract, characters 1470–1727 · show in text ↑
t0

“wheat cultivars (Triticum aestivum L.)”

✓ located verbatim in the source · title, characters 52–90 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

KCl priming improved drought tolerance across wheat cultivars.

Treatment
Potassium chloridee0
Outcome
drought tolerancee0
Direction
improvede0

Not reportedComparator

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Potassium chloride improved drought tolerance at all wheat cultivars.”

✓ located verbatim in the source · abstract, characters 1728–1797 · show in text ↑
Associationobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

KCl primed grain yield correlated significantly with spikes per square meter.

Treatment
KCle0
Outcome
grain yielde0
Value
0.91**e0
Qualifier
number of spikes per square metere0

Not reportedDirection

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“There were significant correlations between grain yield at primed with KCl and following wheat traits: number of spikes per square meter (0.91**), number of grains per spike (0.92**) and total dry matter (0.79*).”

✓ located verbatim in the source · abstract, characters 1798–2010 · show in text ↑
Associationobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

KCl primed grain yield correlated significantly with grains per spike.

Treatment
KCle0
Outcome
grain yielde0
Value
0.92**e0
Qualifier
number of grains per spikee0

Not reportedDirection

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“There were significant correlations between grain yield at primed with KCl and following wheat traits: number of spikes per square meter (0.91**), number of grains per spike (0.92**) and total dry matter (0.79*).”

✓ located verbatim in the source · abstract, characters 1798–2010 · show in text ↑
Associationobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

KCl primed grain yield correlated significantly with total dry matter.

Treatment
KCle0
Outcome
grain yielde0
Value
0.79*e0
Qualifier
total dry mattere0

Not reportedDirection

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“There were significant correlations between grain yield at primed with KCl and following wheat traits: number of spikes per square meter (0.91**), number of grains per spike (0.92**) and total dry matter (0.79*).”

✓ located verbatim in the source · abstract, characters 1798–2010 · show in text ↑
Recommendationauthor interpretationoriginal resultbasis n/a

Claim · model-written summary

Authors suggest correlated traits as indirect selection criteria for yield in primed wheat.

Outcome
indirect criteria for selection of high grain yielde0

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“these traits could be used as indirect criteria for selection of high grain yield of cultivars for primed seed.”

✓ located verbatim in the source · abstract, characters 2036–2147 · show in text ↑
t0

“wheat cultivars (Triticum aestivum L.)”

✓ located verbatim in the source · title, characters 52–90 · show in text ↑

indole-3-acetic acid · yield · Triticum aestivum (wheat)Results differ

11 papers: 10 positive, 1 negative or no effect

9 papers in the same direction as this paper · 1 in the opposite direction

  1. no effect
  2. positive
  3. positive

7 papers more in this group

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chlormequat chloride · growth · Triticum aestivum (wheat)Results differ

49 papers: 37 positive, 12 negative or no effect

36 papers in the same direction as this paper · 11 in the opposite direction · 1 reporting no difference from an alternative

  1. negative
  2. no effect
  3. negative

45 papers more in this group

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chlormequat chloride · yield · Triticum aestivum (wheat)Results differ

71 papers: 53 positive, 18 negative or no effect

52 papers in the same direction as this paper · 18 in the opposite direction

  1. no effect
  2. no effect
  3. no effect

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potassium chloride · tolerance: abiotic · Triticum aestivum (wheat)Results agree

2 papers: 2 positive, 0 negative or no effect

1 paper in the same direction as this paper

  1. positive
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seed treatment · physiology: pigments · Triticum aestivum (wheat)Positive and negative results

44 papers: 42 positive, 2 negative or no effect

41 papers in the same direction as this paper · 2 in the opposite direction

  1. no effect
  2. no effect
  3. positive

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seed treatment · yield · Triticum aestivum (wheat)Positive and negative results

301 papers: 270 positive, 31 negative or no effect

269 papers in the same direction as this paper · 31 in the opposite direction

  1. positive
  2. positive
  3. no effect

297 papers more in this group

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nitrogen · growth · Triticum aestivum (wheat)Positive and negative results

551 papers: 426 positive, 125 negative or no effect

124 papers in the same direction as this paper · 426 in the opposite direction

  1. positive
  2. positive
  3. positive

547 papers more in this group

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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.