Abstract
The field experiment was conducted at Sakha Agricultural Research Station, ARC, Egypt during 2008/09 and 2009/10 wheat growing seasons. Eight genotypes of bread wheat were evaluated under irrigated as well as water stress with nitrogen fertilizer rates; 25, 50 and 75 kg N/fad. This study was performed as split-split plot design using four replications. Measurements were taken on grain yield and related traits. The stress susceptibility index was calculated. The results show that irrigation regime had highly significant effects on all characters, except for kernel weight in the second season. Moreover, all characters differed significantly among N application rates at active except for kernel weight in the second season. Highly significant genotype differences occurred for all characters in both seasons. Sids 12 recorded the highest grain yield in both seasons. Plants fertilized with 75 kg N/fad under normal irrigation recorded the highest grain yield compared with those under stress treatment in the first season. Sids 13 recorded the highest number of spikes/m2 under normal irrigation in the first season. Line 2 recorded the heaviest kernel weight under normal irrigation without differences with Line 1 and Gemmeiza 11 under the same condition of irrigation in the first season. The highest number of kernels per spike was obtained from Sids 12 under normal irrigation in 2008/09 season. Sids 12, Shandaweel 1 and Sids 13 recorded the highest grain yield under normal irrigation in 2008/09 season. Sids 12 recorded the highest number of kernels per spike under 75 kg N/fad in the second season. Line 2, Sakha 93, Giza 168 and Sids 13 were the most tolerant genotype showing least reduction in grain yield (the lowest value of stress susceptibility index). In conclusion, these cultivars could be used in wheat breeding program to develop new bread wheat cultivars tolerant to water stress.
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Claims 17
Claim · model-written summary
Irrigation regime significantly affected all measured traits except second-season kernel weight.
- Taxon
- bread wheat
Triticum aestivumt0 - Treatment
- irrigation regimee0
- Outcome
- all characterse0
- Qualifier
- except for kernel weight in the second seasone0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“bread wheat”
e0“irrigation regime had highly significant effects on all characters, except for kernel weight in the second season”
Claim · model-written summary
Nitrogen rate significantly affected all traits except second-season kernel weight.
- Taxon
- bread wheatTriticum aestivumt0
- Treatment
- N application ratese0
- Outcome
- all characterse0
- Qualifier
- except for kernel weight in the second seasone0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“bread wheat”
e0“all characters differed significantly among N application rates at active except for kernel weight in the second season”
Claim · model-written summary
Genotypes differed significantly for all traits in both seasons.
- Taxon
- bread wheatTriticum aestivumt0
- Material
- genotypee0
- Outcome
- all characterse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“bread wheat”
e0“Highly significant genotype differences occurred for all characters in both seasons”
Claim · model-written summary
Sids 12 had the highest grain yield in both seasons.
- Taxon
- bread wheatTriticum aestivumt0
- Material
- Sids 12e0
- Outcome
- grain yielde0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“bread wheat”
e0“Sids 12 recorded the highest grain yield in both seasons”
Claim · model-written summary
At 75 kg N/fad and normal irrigation, first-season grain yield was highest versus stress treatment.
- Taxon
- bread wheatTriticum aestivumt0
- Treatment
- 75 kg N/fad under normal irrigatione0
- Outcome
- grain yielde0
- Direction
- higheste0
- Comparator
- stress treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“bread wheat”
e0“Plants fertilized with 75 kg N/fad under normal irrigation recorded the highest grain yield compared with those under stress treatment in the first season”
Claim · model-written summary
Sids 13 had the highest first-season spike density under normal irrigation.
- Taxon
- bread wheatTriticum aestivumt0
- Material
- Sids 13e0
- Outcome
- number of spikes/m2e0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“bread wheat”
e0“Sids 13 recorded the highest number of spikes/m2 under normal irrigation in the first season”
Claim · model-written summary
Line 2 had the heaviest first-season kernel weight under normal irrigation, statistically tied with Line 1 and Gemmeiza 11.
- Taxon
- bread wheatTriticum aestivumt0
- Material
- Line 2e0
- Outcome
- kernel weighte0
- Direction
- heavieste0
- Comparator
- Line 1 and Gemmeiza 11e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“bread wheat”
e0“Line 2 recorded the heaviest kernel weight under normal irrigation without differences with Line 1 and Gemmeiza 11 under the same condition of irrigation in the first season”
Claim · model-written summary
Sids 12 had the highest kernels per spike under normal irrigation in 2008/09.
- Taxon
- bread wheatTriticum aestivumt0
- Material
- Sids 12e0
- Outcome
- number of kernels per spikee0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“bread wheat”
e0“The highest number of kernels per spike was obtained from Sids 12 under normal irrigation in 2008/09 season”
Claim · model-written summary
Sids 12 had among the highest grain yields under normal irrigation in 2008/09.
- Taxon
- bread wheatTriticum aestivumt0
- Material
- Sids 12e0
- Outcome
- grain yielde0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“bread wheat”
e0“Sids 12, Shandaweel 1 and Sids 13 recorded the highest grain yield under normal irrigation in 2008/09 season”
Claim · model-written summary
Shandaweel 1 had among the highest grain yields under normal irrigation in 2008/09.
- Taxon
- bread wheatTriticum aestivumt0
- Material
- Shandaweel 1e0
- Outcome
- grain yielde0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“bread wheat”
e0“Sids 12, Shandaweel 1 and Sids 13 recorded the highest grain yield under normal irrigation in 2008/09 season”
Claim · model-written summary
Sids 13 had among the highest grain yields under normal irrigation in 2008/09.
- Taxon
- bread wheatTriticum aestivumt0
- Material
- Sids 13e0
- Outcome
- grain yielde0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“bread wheat”
e0“Sids 12, Shandaweel 1 and Sids 13 recorded the highest grain yield under normal irrigation in 2008/09 season”
Claim · model-written summary
Sids 12 had the highest second-season kernels per spike under 75 kg N/fad.
- Taxon
- bread wheatTriticum aestivumt0
- Material
- Sids 12e0
- Outcome
- number of kernels per spikee0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“bread wheat”
e0“Sids 12 recorded the highest number of kernels per spike under 75 kg N/fad in the second season”
Claim · model-written summary
Line 2 showed low grain yield reduction and low stress susceptibility.
- Taxon
- bread wheatTriticum aestivumt0
- Material
- Line 2e0
- Outcome
- reduction in grain yielde0
- Direction
- leaste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“bread wheat”
e0“Line 2, Sakha 93, Giza 168 and Sids 13 were the most tolerant genotype showing least reduction in grain yield (the lowest value of stress susceptibility index)”
Claim · model-written summary
Sakha 93 showed low grain yield reduction and low stress susceptibility.
- Taxon
- bread wheatTriticum aestivumt0
- Material
- Sakha 93e0
- Outcome
- reduction in grain yielde0
- Direction
- leaste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“bread wheat”
e0“Line 2, Sakha 93, Giza 168 and Sids 13 were the most tolerant genotype showing least reduction in grain yield (the lowest value of stress susceptibility index)”
Claim · model-written summary
Giza 168 showed low grain yield reduction and low stress susceptibility.
- Taxon
- bread wheatTriticum aestivumt0
- Material
- Giza 168e0
- Outcome
- reduction in grain yielde0
- Direction
- leaste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“bread wheat”
e0“Line 2, Sakha 93, Giza 168 and Sids 13 were the most tolerant genotype showing least reduction in grain yield (the lowest value of stress susceptibility index)”
Claim · model-written summary
Sids 13 showed low grain yield reduction and low stress susceptibility.
- Taxon
- bread wheatTriticum aestivumt0
- Material
- Sids 13e0
- Outcome
- reduction in grain yielde0
- Direction
- leaste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“bread wheat”
e0“Line 2, Sakha 93, Giza 168 and Sids 13 were the most tolerant genotype showing least reduction in grain yield (the lowest value of stress susceptibility index)”
Claim · model-written summary
The authors recommend these stress-tolerant cultivars for wheat breeding.
- Taxon
- bread wheatTriticum aestivumt0
- Outcome
- used in wheat breeding program to develop new bread wheat cultivars tolerant to water stresse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“bread wheat”
e0“these cultivars could be used in wheat breeding program to develop new bread wheat cultivars tolerant to water stress”
The same questions in other papers
irrigation · yield · Triticum aestivum (wheat)Positive and negative results
797 papers in the same direction as this paper · 184 in the opposite direction · 7 reporting no difference from an alternative
- positive
- negative
- no effect
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See all 989 papers →nitrogen · yield · Triticum aestivum (wheat)Positive and negative results
1,736 papers in the same direction as this paper · 285 in the opposite direction · 39 reporting no difference from an alternative
- no effect
- no effect
- positive
2,057 papers more in this group
See all 2,061 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.