Abstract
High yields of grain and sunflower oil need to match of vegetative and reproductive growth stages of the plant with favorable weather conditions by selecting appropriate sowing date. A split plot experiment, according a randomized complete block design (RCBD) with three replications was performed in the research field of Scientific and Practical Center, Education Complex of Jahad-Agriculture of Hamedan, Iran in 2012. Main plot were sowing date (20 May, 5 and 20 June) and sub-plots were six sunflower cultivars (Pomar, Euroflor, Master, Sirna, Azargol and Armaviruski). Results showed that between cultivars, was significant for grain yield, biological yield, head diameter, stem diameter, stem height, grain empty percent, head dry weight, dry weight of stems and leaves. Grain yield of Euroflor (556.3 g m-2) was the most of the other varieties. The superiority of this variety was due to increased diameter and dry weight of head, stem diameter and biomass. Study planting dates showed that between cultivars was no significant for grain yield, but with delayed planting, decreased stem diameter. The effect of sowing date was significant difference for thousand-grain weight and number of grains per head, so that delays in planting increased grain weight. That was due to reduced number of grains per head.
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Claims 9
Claim · model-written summary
Sunflower cultivars differed significantly in grain yield, biological yield and head diameter.
- Taxon
- sunflower
Helianthus annuust0 - Outcome
- grain yield, biological yield, head diametere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Results showed that between cultivars, was significant for grain yield, biological yield, head diameter, stem diameter, stem height, grain empty percent, head dry weight, dry weight of stems and leaves.”
t0“sunflower”
Claim · model-written summary
Sunflower cultivars differed significantly in stem diameter, stem height and grain empty percent.
- Taxon
- sunflowerHelianthus annuust0
- Outcome
- stem diameter, stem height, grain empty percente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Results showed that between cultivars, was significant for grain yield, biological yield, head diameter, stem diameter, stem height, grain empty percent, head dry weight, dry weight of stems and leaves.”
t0“sunflower”
Claim · model-written summary
Sunflower cultivars differed significantly in head dry weight and dry weight of stems and leaves.
- Taxon
- sunflowerHelianthus annuust0
- Outcome
- head dry weight, dry weight of stems and leavese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Results showed that between cultivars, was significant for grain yield, biological yield, head diameter, stem diameter, stem height, grain empty percent, head dry weight, dry weight of stems and leaves.”
t0“sunflower”
Claim · model-written summary
Euroflor had the greatest grain yield at 556.3 g m-2.
- Taxon
- sunflowerHelianthus annuust0
- Material
- Euroflore0
- Outcome
- Grain yielde0
- Direction
- moste0
- Value
- 556.3 g m-2e0
- Comparator
- other varietiese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Grain yield of Euroflor (556.3 g m-2) was the most of the other varieties.”
t0“sunflower”
Claim · model-written summary
Euroflor superiority was attributed to increased head diameter and dry weight, stem diameter and biomass.
- Taxon
- sunflowerHelianthus annuust0
- Material
- Euroflore1
- Outcome
- superiority of this varietye0
- Qualifier
- increased diameter and dry weight of head, stem diameter and biomasse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The superiority of this variety was due to increased diameter and dry weight of head, stem diameter and biomass.”
e1“Grain yield of Euroflor (556.3 g m-2) was the most of the other varieties.”
t0“sunflower”
Claim · model-written summary
Planting dates did not differ significantly in grain yield.
- Taxon
- sunflowerHelianthus annuust0
- Treatment
- sowing datee1
- Outcome
- grain yielde0
- Comparator
- 20 May, 5 and 20 Junee1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Study planting dates showed that between cultivars was no significant for grain yield”
t0“sunflower”
e1“Main plot were sowing date (20 May, 5 and 20 June)”
Claim · model-written summary
Delayed planting decreased stem diameter.
- Taxon
- sunflowerHelianthus annuust0
- Treatment
- delayed plantinge0
- Outcome
- stem diametere0
- Direction
- decreasede0
- Comparator
- 20 Maye1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“with delayed planting, decreased stem diameter.”
t0“sunflower”
e1“Main plot were sowing date (20 May, 5 and 20 June)”
Claim · model-written summary
Sowing date significantly affected thousand-grain weight, with planting delays increasing grain weight.
- Taxon
- sunflowerHelianthus annuust0
- Treatment
- delays in plantinge0
- Outcome
- thousand-grain weighte0
- Direction
- increasede0
- Comparator
- 20 Maye1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effect of sowing date was significant difference for thousand-grain weight and number of grains per head, so that delays in planting increased grain weight.”
e1“Main plot were sowing date (20 May, 5 and 20 June)”
t0“sunflower”
Claim · model-written summary
Sowing date significantly affected grains per head, with delays reducing their number.
- Taxon
- sunflowerHelianthus annuust0
- Treatment
- delays in plantinge0
- Outcome
- number of grains per heade0
- Direction
- reducede0
- Comparator
- 20 Maye1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effect of sowing date was significant difference for thousand-grain weight and number of grains per head, so that delays in planting increased grain weight. That was due to reduced number of grains per head.”
e1“Main plot were sowing date (20 May, 5 and 20 June)”
t0“sunflower”
The same questions in other papers
sowing time · growth · Helianthus annuus (common sunflower)Positive and negative results
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- positive
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13 papers in the same direction as this paper · 39 reporting no difference from an alternative
- positive
- positive
- positive
49 papers more in this group
See all 53 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.