Abstract
Seed priming has been reported to enhance growth of plants. To evaluate the effect of some physical seed priming materials (ultrasonic, gamma, beta, lase r, magnetic field, irradiations and hydro -priming) on yield and yield components of sunflower, field experiments were conducted at Islamic Azad University, Tabriz branch, Iran during 2011 -2012 in a randomized complete block design, with three replications. The results revealed that crop LAI, following pre -sowing treatments, increased by magnetic fields, laser for 5 and 15 min. and ultrasonic up to 3.36, 3.41, 3.91 and 3.53, respectively. Beta and gamma rays, hydropriming and non-priming of seeds reduced it at 70 DAE. Highest mean yield produced from seeds treated with laser (419.7g.m -2 ) and magnetic field (379.8g.m -2 ) for 5 min. However, it decreased by increasing laser duration from 5 to 10 min. Biomass produced ranged from 947.4 g.m -2 in seeds primed under laser for 5 minutes. and 406.7 g.m -2 in non-priming ones. It was also found that sunflower seeds irradiated with laser for 5 and 10 minutes and magnetic fields resulted in highest harvest index (49.1%), as compared with other treatments. It may be concluded that sunflower growers could improve crop yield by priming the seeds with magnetic field and laser irradiation before sowing.
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Claims 11
Claim · model-written summary
Magnetic field priming increased crop LAI to 3.36.
- Taxon
- sunflower
Helianthus annuust0 - Treatment
- magnetic fieldse0
- Outcome
- crop LAIe0
- Direction
- increasede0
- Value
- 3.36e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“crop LAI, following pre -sowing treatments, increased by magnetic fields, laser for 5 and 15 min. and ultrasonic up to 3.36, 3.41, 3.91 and 3.53, respectively”
t0“sunflower”
Claim · model-written summary
Five minute laser priming increased LAI to 3.41.
- Taxon
- sunflowerHelianthus annuust0
- Treatment
- laser for 5e0
- Outcome
- crop LAIe0
- Direction
- increasede0
- Value
- 3.41e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“crop LAI, following pre -sowing treatments, increased by magnetic fields, laser for 5 and 15 min. and ultrasonic up to 3.36, 3.41, 3.91 and 3.53, respectively”
t0“sunflower”
Claim · model-written summary
Fifteen minute laser priming increased LAI to 3.91.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“crop LAI, following pre -sowing treatments, increased by magnetic fields, laser for 5 and 15 min. and ultrasonic up to 3.36, 3.41, 3.91 and 3.53, respectively”
t0“sunflower”
Claim · model-written summary
Ultrasonic priming increased LAI to 3.53.
- Taxon
- sunflowerHelianthus annuust0
- Treatment
- ultrasonice0
- Outcome
- crop LAIe0
- Direction
- increasede0
- Value
- 3.53e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“crop LAI, following pre -sowing treatments, increased by magnetic fields, laser for 5 and 15 min. and ultrasonic up to 3.36, 3.41, 3.91 and 3.53, respectively”
t0“sunflower”
Claim · model-written summary
Beta and gamma rays, hydropriming and no priming reduced LAI at 70 DAE.
- Taxon
- sunflowerHelianthus annuust0
- Outcome
- ite0
- Direction
- reducede0
- Qualifier
- 70 DAEe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Beta and gamma rays, hydropriming and non-priming of seeds reduced it at 70 DAE”
t0“sunflower”
Claim · model-written summary
Five minute laser treatment gave mean yield of 419.7g.m -2.
- Taxon
- sunflowerHelianthus annuust0
- Treatment
- lasere0
- Outcome
- mean yielde0
- Direction
- Higheste0
- Value
- 419.7g.m -2e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Highest mean yield produced from seeds treated with laser (419.7g.m -2 ) and magnetic field (379.8g.m -2 ) for 5 min.”
t0“sunflower”
Claim · model-written summary
Five minute magnetic field treatment gave mean yield of 379.8g.m -2.
- Taxon
- sunflowerHelianthus annuust0
- Treatment
- magnetic fielde0
- Outcome
- mean yielde0
- Direction
- Higheste0
- Value
- 379.8g.m -2e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Highest mean yield produced from seeds treated with laser (419.7g.m -2 ) and magnetic field (379.8g.m -2 ) for 5 min.”
t0“sunflower”
Claim · model-written summary
Increasing laser duration from five to ten minutes decreased yield.
- Taxon
- sunflowerHelianthus annuust0
- Treatment
- increasing laser duration from 5 to 10 mine0
- Outcome
- ite0
- Direction
- decreasede0
- Comparator
- 5e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“it decreased by increasing laser duration from 5 to 10 min”
t0“sunflower”
Claim · model-written summary
Five minute laser priming produced 947.4 g.m -2 biomass versus 406.7 g.m -2 without priming.
- Taxon
- sunflowerHelianthus annuust0
- Treatment
- laser for 5 minutese0
- Outcome
- Biomasse0
- Direction
- rangede0
- Value
- 947.4 g.m -2e0
- Qualifier
- 406.7 g.m -2e0
- Comparator
- non-priming onese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Biomass produced ranged from 947.4 g.m -2 in seeds primed under laser for 5 minutes. and 406.7 g.m -2 in non-priming ones”
t0“sunflower”
Claim · model-written summary
Laser and magnetic field treated seeds had the highest harvest index, 49.1%.
- Taxon
- sunflowerHelianthus annuuse0
- Outcome
- harvest indexe0
- Direction
- higheste0
- Value
- 49.1%e0
- Comparator
- other treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“sunflower seeds irradiated with laser for 5 and 10 minutes and magnetic fields resulted in highest harvest index (49.1%), as compared with other treatments”
Claim · model-written summary
The authors recommend magnetic field and laser seed priming to improve sunflower yield.
- Taxon
- sunflowerHelianthus annuuse0
- Outcome
- priming the seeds with magnetic field and laser irradiation before sowinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“sunflower growers could improve crop yield by priming the seeds with magnetic field and laser irradiation before sowing”
The same questions in other papers
magnetic · growth · Helianthus annuus (common sunflower)Results differ
9 papers in the same direction as this paper · 2 in the opposite direction
- no effect
- no effect
- positive
8 papers more in this group
See all 12 papers →physical treatment · growth · Helianthus annuus (common sunflower)Positive and negative results
5 papers in the same direction as this paper · 3 in the opposite direction
- negative
- negative
- negative
5 papers more in this group
See all 9 papers →magnetic · yield · Helianthus annuus (common sunflower)Results agree
2 papers in the same direction as this paper
- positive
- positive
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.