Abstract
Abstract Early sowing in cotton is important for obtaining a high and qualiy yield. Since cotton prefers high temperatures to have a good stand establisment, this work is important to determine better performing genotypes or to promote germination and emergence at low temperatures (<20°C). This research aimed to increase seed germination rate and seed vigour under cold stress conditions. Two cotton genotypes belonging to G. hirsutum L. species (Aydin-110 and Paymaster-2379) were primed with PEG-6000 (200, 300, 400 g/L), KNO 3 (2, 3, 4%), KH 2 PO 4 (0.3, 0.4, 0.5 M), NaCl (2, 3, 4%) or Mannitol (2, 4, 6%) to determine the best priming medium and its best amount. After priming, seeds were germinated in germination cabin at cold (18°C) and warm (30°C) temperatures and some characteristics (germination rates, radicle length, hypocotyl length and seedling length) were analyzed. Priming with KNO 3 (4% or 2%) was found to result in the highest germination rates in both cotton genotypes. The seeds of the genotypes were also primed with 5-aminolevulinic acid (ALA) (1, 10, 25 mg/L), gibberellic acid (GA 3 ) (100, 250, 500 μM), methyl jasmonate (MeJA) (1, 3, 5 μM), acetylsalicylic acid (ASA) (1, 10, 100 μM) or kinetin (1, 5, 10 mg/L) added to KNO 3 (4%) medium to choose the most effective plant growth regulator (PGR) application and its dose. PGRs were observed to have reverse effects on germination rate. Finally, emergence test was conducted with KNO 3 (4%) and KNO 3 (2%) using metabolic chill test, and some traits (radicle length, radicle weight, hypocotyl length, hypocotyl weight, seedling length, seedling fresh weight and seedling dry weight) were examined. Our results suggested that priming with KNO 3 (2%) might be an effecient way to have vigourous cotton plants under the cold stress.
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Claims 4
Claim · model-written summary
KNO 3 at 4% gave the highest germination rates in both cotton genotypes.
- Taxon
- cotton
Gossypium hirsutume0 - Treatment
- KNO 3 (4%e0
- Outcome
- germination ratese0
- Direction
- higheste0
- Qualifier
- both cotton genotypese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Priming with KNO 3 (4% or 2%) was found to result in the highest germination rates in both cotton genotypes”
Claim · model-written summary
KNO 3 at 2% gave the highest germination rates in both cotton genotypes.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- KNO 3 (4% or 2%)e0
- Outcome
- germination ratese0
- Direction
- higheste0
- Qualifier
- both cotton genotypese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Priming with KNO 3 (4% or 2%) was found to result in the highest germination rates in both cotton genotypes”
Claim · model-written summary
Added plant growth regulators reversed the germination benefit.
Not reportedTaxonComparator
Verbatim
e0“PGRs were observed to have reverse effects on germination rate”
e1“KNO 3 (4%) medium”
Claim · model-written summary
The authors suggest KNO 3 at 2% priming for vigorous cotton under cold stress.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- priming with KNO 3 (2%)e0
- Outcome
- vigourous cotton plantse0
- Qualifier
- under the cold stresse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“priming with KNO 3 (2%) might be an effecient way to have vigourous cotton plants under the cold stress”
The same questions in other papers
class · growth · Gossypium hirsutum (cotton)Positive and negative results
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See all 34 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.