Abstract
The study aimed to determine the effects of seed priming on germination and seedling development in sunflower exposed to drought and low temperature stresses. The primed seeds (KNO3, and hydration) of Sanbro MR were evaluated at low temperatures of 15 °C and 18 °C under drought conditions induced by PEG-6000 at the water potentials of 0 (distilled water), −0.2, −0.4, and −0.6 MPa. Unprimed seeds were used as a control and a temperature of 25 °C was considered optimal. The results showed that germination was negatively affected by both stress factors, although this varies according to priming applications. Drought inhibited germination and seedling growth more than low temperatures. Seedling growth was also more adversely affected by low temperatures compared to germination. Under low temperatures, there was a 63% decrease in shoot length and a 59% decrease in root length. Drought stress resulted in an 85% reduction in shoot length, while roots were reduced by 65%. The primed seeds with KNO3 gave the highest germination percentage at -6 MPa at 15 °C. However, hydration showed superiority under different drought levels at 18 °C and 25 °C. It was concluded that hydrated seeds should be used for increased germination and seedling growth under low temperatures and drought stresses in sunflower.
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Claims 9
Claim · model-written summary
Drought and low temperature impaired germination.
- Taxon
- sunflower
Helianthus annuust0 - Treatment
- both stress factorse0
- Outcome
- germinatione0
- Direction
- negatively affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“germination was negatively affected by both stress factors”
t0“sunflower”
Claim · model-written summary
Drought inhibited germination and seedling growth more than low temperature.
- Taxon
- sunflowerHelianthus annuust0
- Treatment
- Droughte0
- Outcome
- germination and seedling growthe0
- Direction
- inhibitede0
- Comparator
- low temperaturese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Drought inhibited germination and seedling growth more than low temperatures”
t0“sunflower”
Claim · model-written summary
Low temperature reduced shoot length by 63%.
- Taxon
- sunflowerHelianthus annuust0
- Treatment
- low temperaturese0
- Outcome
- shoot lengthe0
- Direction
- decreasee0
- Value
- 63%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under low temperatures, there was a 63% decrease in shoot length”
t0“sunflower”
Claim · model-written summary
Low temperature reduced root length by 59%.
- Taxon
- sunflowerHelianthus annuust0
- Treatment
- low temperaturese0
- Outcome
- root lengthe0
- Direction
- decreasee0
- Value
- 59%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under low temperatures, there was a 63% decrease in shoot length and a 59% decrease in root length”
t0“sunflower”
Claim · model-written summary
Drought reduced shoot length by 85%.
- Taxon
- sunflowerHelianthus annuust0
- Treatment
- Drought stresse0
- Outcome
- shoot lengthe0
- Direction
- reductione0
- Value
- 85%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Drought stress resulted in an 85% reduction in shoot length”
t0“sunflower”
Claim · model-written summary
Drought reduced root length by 65%.
- Taxon
- sunflowerHelianthus annuust0
- Treatment
- Drought stresse0
- Outcome
- rootse0
- Direction
- reducede0
- Value
- 65%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Drought stress resulted in an 85% reduction in shoot length, while roots were reduced by 65%”
t0“sunflower”
Claim · model-written summary
KNO3 priming gave the highest germination at the stated drought and temperature conditions.
- Taxon
- sunflowerHelianthus annuust0
- Treatment
- KNO3e0
- Outcome
- germination percentagee0
- Direction
- higheste0
- Qualifier
- -6 MPae0
- Setting
- 15 °Ce0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The primed seeds with KNO3 gave the highest germination percentage at -6 MPa at 15 °C”
t0“sunflower”
Claim · model-written summary
Hydration was superior at drought levels at 18 and 25 °C.
- Taxon
- sunflowerHelianthus annuust0
- Treatment
- hydratione0
- Outcome
- superioritye0
- Direction
- superioritye0
- Qualifier
- different drought levels at 18 °C and 25 °Ce0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“hydration showed superiority under different drought levels at 18 °C and 25 °C”
t0“sunflower”
Claim · model-written summary
The authors recommend hydrated seed for improved germination and seedling growth under drought and cold.
- Taxon
- sunflowerHelianthus annuuse0
- Outcome
- hydrated seeds should be used for increased germination and seedling growthe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“hydrated seeds should be used for increased germination and seedling growth under low temperatures and drought stresses in sunflower”
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See all 59 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.