Abstract
In order to study effect of zinc and sulfur foliar applications on quantitative and qualitative characteristics of sunflower under water deficit stress, an experiment was conducted at Varamin, Iran during 2013 growing season. The experimental design was laid out in a randomized complete block with a split plots arrangement of treatments in three replications. Main plots included three different levels of irrigation (complete irrigation, irrigation withholding at flowering stage and irrigation withholding at seed filling period stage) and sub plots were included four different zinc and sulfur application (untreated zinc and sulfur application, zinc foliar application, sulfur application and both zinc foliar application and sulfur application). The results showed that irrigation withholding at different growth stages significantly decreased seed number in cap, thousand seed weight, seed yield, biological yield, oil yield and total chlorophyll but by contrast increased proline content, membrane stability, super oxide dismutase enzymes activity. Both zinc foliar application and sulfur application treatment had positive effect on all attributes in this experiment. In general, the results of the present study indicate that usage of zinc foliar application reduces the harmful effects of water deficit stress and increases resistance to drought stress in sunflower plant.
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Claims 5
Claim · model-written summary
Irrigation withholding decreased seed number in cap, thousand seed weight and seed yield.
- Taxon
- sunflower
Helianthus annuust0 - Treatment
- irrigation withholding at different growth stagese0
- Outcome
- seed number in cap, thousand seed weight, seed yielde0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“sunflower (Helianthus annuus L.)”
e0“irrigation withholding at different growth stages significantly decreased seed number in cap, thousand seed weight, seed yield”
Claim · model-written summary
Irrigation withholding decreased biological yield, oil yield and total chlorophyll.
- Taxon
- sunflowerHelianthus annuust0
- Treatment
- irrigation withholding at different growth stagese0
- Outcome
- biological yield, oil yield and total chlorophylle0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“sunflower (Helianthus annuus L.)”
e0“irrigation withholding at different growth stages significantly decreased seed number in cap, thousand seed weight, seed yield, biological yield, oil yield and total chlorophyll”
Claim · model-written summary
Irrigation withholding increased proline content, membrane stability and super oxide dismutase enzymes activity.
- Taxon
- sunflowerHelianthus annuust0
- Treatment
- irrigation withholding at different growth stagese0
- Outcome
- proline content, membrane stability, super oxide dismutase enzymes activitye0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“sunflower (Helianthus annuus L.)”
e0“irrigation withholding at different growth stages significantly decreased seed number in cap, thousand seed weight, seed yield, biological yield, oil yield and total chlorophyll but by contrast increased proline content, membrane stability, super oxide dismutase enzymes activity”
Claim · model-written summary
Combined zinc and sulfur application positively affected measured attributes.
- Taxon
- sunflowerHelianthus annuust0
- Treatment
- Both zinc foliar application and sulfur application treatmente0
- Outcome
- all attributese0
- Direction
- positive effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“sunflower (Helianthus annuus L.)”
e0“Both zinc foliar application and sulfur application treatment had positive effect on all attributes in this experiment”
Claim · model-written summary
The authors conclude that zinc foliar application reduces harm from water deficit and increases drought resistance.
- Taxon
- sunflowerHelianthus annuuse0
- Outcome
- usage of zinc foliar applicatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“usage of zinc foliar application reduces the harmful effects of water deficit stress and increases resistance to drought stress in sunflower plant”
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