Abstract
2 Abstract: Effects of drought stress induced by polyethylene glycol (PEG) on germination of four wild almonds were evaluated. The seeds of Prunus scoparia Spach, P. eleagnifolia Spach, P. lycioides Spach and P. dulcis Mill (No. 24 Zarghan) were collected and stratified at 4±1 °C for 4 weeks. Stratified seeds were incubated in PEG solution with various osmotic potentials (0, -0.05, -0.1 and -0.5 MPa). The experiment was arranged in a completely randomized design with 4 replications, and germination capacity, mean and time of germination, germination rate, length of hypocotyls and radicles and also fresh and dry weight of seedlings were determined. Germination capacity, germination rate and growth parameters of all species were decreased by increase in PEG concentration and germination onset was also delayed. Furthermore the results indicated that osmotic stress depressed the hypocotyls growth more than radicle and root systems were more drought tolerant. Although PEG adversely affected the germination of all 4 species, they responded differently to drought stress. P. scoparia showing higher germination capacity, germination rate and seedling length had the highest tolerance to drought stress and P. eleagnifolia in early phase of its seedling growth could not completely cope with drought stress. The germination results revealed the presence of drought resistant almonds with rich germplasm in Iran.
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Claims 8
Claim · model-written summary
Germination capacity, germination rate and growth parameters of all almond species decreased with increasing PEG concentration.
- Taxon
- Wild Almondt0
- Treatment
- PEG concentratione1
- Outcome
- Germination capacity, germination rate and growth parameterse1
- Direction
- decreasede1
Not reportedComparator
Verbatim
t0“Wild Almond Species”
e1“Germination capacity, germination rate and growth parameters of all species were decreased by increase in PEG concentration”
Claim · model-written summary
Germination onset of the almond species was delayed by PEG-induced drought stress.
Not reportedComparator
Verbatim
t0“Wild Almond Species”
e1“germination onset was also delayed”
e2“Germination capacity, germination rate and growth parameters of all species were decreased by increase in PEG concentration”
Claim · model-written summary
Osmotic stress depressed hypocotyl growth more than radicle growth in the almond seedlings.
Verbatim
t0“Wild Almond Species”
e1“osmotic stress depressed the hypocotyls growth more than radicle”
Claim · model-written summary
Root systems of the almond seedlings were more drought tolerant than hypocotyls.
Verbatim
t0“Wild Almond Species”
e1“root systems were more drought tolerant”
Claim · model-written summary
P. scoparia had higher germination capacity, germination rate and seedling length under PEG stress.
Verbatim
t0“Wild Almond Species”
e1“P. scoparia showing higher germination capacity, germination rate and seedling length had the highest tolerance to drought stress”
Claim · model-written summary
P. scoparia had the highest tolerance to drought stress among the four almond species.
Verbatim
t0“Wild Almond Species”
e1“P. scoparia showing higher germination capacity, germination rate and seedling length had the highest tolerance to drought stress”
Claim · model-written summary
P. eleagnifolia could not completely cope with drought stress in the early phase of seedling growth.
Verbatim
t0“Wild Almond Species”
e1“P. eleagnifolia in early phase of its seedling growth could not completely cope with drought stress”
Claim · model-written summary
The germination results revealed drought-resistant wild almonds with rich germplasm in Iran.
Verbatim
t0“Wild Almond Species”
e1“The germination results revealed the presence of drought resistant almonds with rich germplasm in Iran”
The same questions in other papers
drought · growth · Prunus dulcis (almond)Results agree
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See all 6 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.