Abstract
Understanding the response of sunflower (Helianthus annuus L.) to high water table and waterlogging is important for successful cultivation in monsoon Asia. We examined the physiological responses of sunflower cultivars to these conditions. In the rotational paddy field, where the water table depth was shallow, growth of the plant was suppressed, seed yield was decreased and harvest quality was deteriorated. In the artificially inclined field, the ditch surrounding the sloped plot was constantly filled with water, the growth of plant and oil concentration were decreased significantly when the water table was shallower than about 30 cm. In the pot experiment, where water was logged at different growth stages, the relationship between seed yield and the underground dry weight was significant (r = 0.87, p < 0.01). In cultivars with vigorous growth of underground part, many adventitious roots were appeared. Screening for the appearance of these roots may be an effective way to select sunflower cultivars that are capable of tolerating high water table and tolerating waterlogged conditions and avoiding decreases in seed and oil yield.
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Claims 7
Claim · model-written summary
Under a shallow water table in the rotational paddy field, sunflower growth was suppressed.
- Taxon
- sunflower
Helianthus annuuse0 - Treatment
- water table depth was shallowe1
- Outcome
- growth of the plante1
- Direction
- suppressede1
- Setting
- rotational paddy fielde1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Understanding the response of sunflower (Helianthus annuus L.) to high water table and waterlogging”
e1“In the rotational paddy field, where the water table depth was shallow, growth of the plant was suppressed, seed yield was decreased and harvest quality was deteriorated.”
Claim · model-written summary
Under a shallow water table in the rotational paddy field, sunflower seed yield decreased.
- Taxon
- sunflowerHelianthus annuuse0
- Treatment
- water table depth was shallowe1
- Outcome
- seed yielde1
- Direction
- decreasede1
- Setting
- rotational paddy fielde1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Understanding the response of sunflower (Helianthus annuus L.) to high water table and waterlogging”
e1“In the rotational paddy field, where the water table depth was shallow, growth of the plant was suppressed, seed yield was decreased and harvest quality was deteriorated.”
Claim · model-written summary
Under a shallow water table in the rotational paddy field, sunflower harvest quality deteriorated.
- Taxon
- sunflowerHelianthus annuuse0
- Treatment
- water table depth was shallowe1
- Outcome
- harvest qualitye1
- Direction
- deterioratede1
- Setting
- rotational paddy fielde1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Understanding the response of sunflower (Helianthus annuus L.) to high water table and waterlogging”
e1“In the rotational paddy field, where the water table depth was shallow, growth of the plant was suppressed, seed yield was decreased and harvest quality was deteriorated.”
Claim · model-written summary
In an artificially inclined field, growth and oil concentration of sunflower decreased significantly when the water table was shallower than about 30 cm.
- Taxon
- sunflowerHelianthus annuuse0
- Treatment
- water table was shallower than about 30 cme2
- Outcome
- growth of plant and oil concentratione2
- Direction
- decreasede2
- Setting
- artificially inclined fielde2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Understanding the response of sunflower (Helianthus annuus L.) to high water table and waterlogging”
e2“In the artificially inclined field, the ditch surrounding the sloped plot was constantly filled with water, the growth of plant and oil concentration were decreased significantly when the water table was shallower than about 30 cm.”
Claim · model-written summary
In pot experiments with waterlogging at different growth stages, seed yield was significantly related to underground dry weight (r = 0.87).
- Taxon
- sunflowerHelianthus annuuse0
- Treatment
- water was logged at different growth stagese3
- Outcome
- relationship between seed yield and the underground dry weighte3
- Value
- r = 0.87e3
- Setting
- pot experimente3
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Understanding the response of sunflower (Helianthus annuus L.) to high water table and waterlogging”
e3“In the pot experiment, where water was logged at different growth stages, the relationship between seed yield and the underground dry weight was significant (r = 0.87, p < 0.01).”
Claim · model-written summary
Sunflower cultivars with vigorous underground growth developed many adventitious roots.
- Taxon
- sunflowerHelianthus annuuse0
- Material
- cultivarse4
- Organ / stage
- underground parte4
- Outcome
- adventitious rootse4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Understanding the response of sunflower (Helianthus annuus L.) to high water table and waterlogging”
e4“In cultivars with vigorous growth of underground part, many adventitious roots were appeared.”
Claim · model-written summary
Screening sunflower for adventitious roots may be an effective way to select cultivars tolerant of high water table and waterlogging without seed and oil yield loss.
- Taxon
- sunflowerHelianthus annuuse5
- Outcome
- select sunflower cultivars that are capable of tolerating high water tablee5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“Screening for the appearance of these roots may be an effective way to select sunflower cultivars that are capable of tolerating high water table and tolerating waterlogged conditions and avoiding decreases in seed and oil yield.”
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- no effect
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.