Abstract
Environmental stress especially drought stress can play an important role in the reduction of plant growth and development. In order to study the effects of drought stress on different growth stages of wheat, an experiment was conducted with five Iranian variety included Atrak, Red-Seed, Cross-Flat, Hirmand and Darab. A split plot design was used with drought treatment being the main plot and cultivar the subplot with three replications. Poorest yield were when drought stress was applied at flowering. It was shown that the most sensitive crop stage in terms of the total number of spikelets is at early stem elongation. Onset of the drought stress at flowering had the greatest damaging effect on seeds per spikelet. The most damaging to seed size was drought stresses applied at and just after flowering. Significant interactions occurred because Darab the highest yielding cultivar and Red-Seed the lowest yielding cultivar both showed an equal and great reduction in seed size under the drought stress while Hirmand was much less responsive. Morphological characters are likely to be affected by water stress. The results of this study indicate that if water for irrigation is scarce and needs to be conserve any saving should not be at the risk of causing drought stress around anthesis. Hirmand, while not the highest yielding cultivar is more stable over the range of moisture stresses applied and it could be considered as a parent to combine its stability with the higher yield potential of say, Darab.
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Claims 11
Claim · model-written summary
Drought applied at flowering produced the poorest wheat yield.
- Taxon
- Wheat
Triticum aestivumt0 - Treatment
- drought stress was applied at floweringe0
- Outcome
- yielde0
- Direction
- Pooreste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Poorest yield were when drought stress was applied at flowering”
t0“Wheat Genotypes”
Claim · model-written summary
The wheat spikelet count was most sensitive to drought at early stem elongation.
- Taxon
- WheatTriticum aestivumt0
- Organ / stage
- early stem elongatione0
- Outcome
- total number of spikeletse0
- Direction
- most sensitivee0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the most sensitive crop stage in terms of the total number of spikelets is at early stem elongation”
t0“Wheat Genotypes”
Claim · model-written summary
Drought beginning at flowering had the greatest damaging effect on wheat seeds per spikelet.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- drought stress at floweringe0
- Outcome
- seeds per spikelete0
- Direction
- greatest damaging effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Onset of the drought stress at flowering had the greatest damaging effect on seeds per spikelet”
t0“Wheat Genotypes”
Claim · model-written summary
Drought at and just after flowering caused the greatest damage to wheat seed size.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- drought stresses applied at and just after floweringe0
- Outcome
- seed sizee0
- Direction
- most damaginge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The most damaging to seed size was drought stresses applied at and just after flowering”
t0“Wheat Genotypes”
Claim · model-written summary
Darab had the highest yield among the tested wheat cultivars.
- Taxon
- WheatTriticum aestivumt0
- Material
- Darabe0
- Outcome
- highest yieldinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Darab the highest yielding cultivar”
t0“Wheat Genotypes”
Claim · model-written summary
Red-Seed had the lowest yield among the tested wheat cultivars.
- Taxon
- WheatTriticum aestivumt0
- Material
- Red-Seede0
- Outcome
- lowest yieldinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Red-Seed the lowest yielding cultivar”
t0“Wheat Genotypes”
Claim · model-written summary
Darab seed size declined greatly under drought.
- Taxon
- WheatTriticum aestivumt0
- Material
- Darabe0
- Treatment
- drought stresse0
- Outcome
- seed sizee0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Significant interactions occurred because Darab the highest yielding cultivar and Red-Seed the lowest yielding cultivar both showed an equal and great reduction in seed size under the drought stress”
t0“Wheat Genotypes”
Claim · model-written summary
Red-Seed seed size declined greatly under drought.
- Taxon
- WheatTriticum aestivumt0
- Material
- Red-Seede0
- Treatment
- drought stresse0
- Outcome
- seed sizee0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Significant interactions occurred because Darab the highest yielding cultivar and Red-Seed the lowest yielding cultivar both showed an equal and great reduction in seed size under the drought stress”
t0“Wheat Genotypes”
Claim · model-written summary
Hirmand seed size responded much less to drought than Darab and Red-Seed.
- Taxon
- WheatTriticum aestivumt0
- Material
- Hirmande0
- Treatment
- drought stresse1
- Outcome
- responsivee0
- Direction
- much lesse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“while Hirmand was much less responsive”
e1“under the drought stress”
t0“Wheat Genotypes”
Claim · model-written summary
The authors advise avoiding drought around anthesis when conserving irrigation water.
- Taxon
- WheatTriticum aestivumt0
- Outcome
- any saving should not be at the risk of causing drought stress around anthesise0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“if water for irrigation is scarce and needs to be conserve any saving should not be at the risk of causing drought stress around anthesis”
t0“Wheat Genotypes”
Claim · model-written summary
The authors suggest Hirmand as a breeding parent to combine drought stability with Darab yield potential.
- Taxon
- WheatTriticum aestivumt0
- Material
- Hirmande0
- Outcome
- considered as a parente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Hirmand, while not the highest yielding cultivar is more stable over the range of moisture stresses applied and it could be considered as a parent to combine its stability with the higher yield potential of say, Darab”
t0“Wheat Genotypes”
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See all 632 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.