Abstract
T WO FIELD experiments were conducted at the experimental farm of Faculty of Agriculture, Kafrelsheikh University, Egypt during 2011/2012 and 2012/2013 seasons. The main objective of this investigation was to study the influence of three levels of drought stress imposed during critical stages on the performance and genotypic variability of three bread wheat cultivars. Results indicated that exposure wheat plants to moderate (two irrigations) or high stress (only one irrigation) decreased significantly all characters (except spike length) compared with low drought stress (three irrigations). However, the differences between moderate and high drought stress were not significant for No. of spikelets/ spike and No. of grains/ spike. Large variations among wheat cultivars were recorded for all the studied characters, indicating that wide range of genetic variability were present among the studied cultivars. As average over stress regimes, Sids 12 recorded the most desirable values for spike length, No. of spikelets/ spike, No. of grains/ spike, spike weight and grain yield. Whereas, the differences between Sids 12 and Misr 1 were not significant for grain yield. Misr 1 gave the highest values of plant height, heading date, No. of spikes/ m2 and 1000-grain weight. Heading date, plant height, spikes/ m2, 1000-grain weight and grain yield were significantly affected by the interaction between irrigation regimes and wheat cultivars. The highest grain yield was recorded for both Misr 1 and Sids 12 wheat cultivars under low irrigation stress (0.62 and 0.59 kg/ m2, respectively). However, the differences between moderate and high stress were not significant (for grain yield) in case of Giza 168. Correlation analysis of yield and yield related characters indicated that under low drought stress condition, No of spikes/ m2 and 1000-grain weight was positively correlated with grain yield. While, these traits were spike length, No. of spikelets/ spike, No. of grains/ spike and spike weight in case high drought stress conditions. The extent of coefficient of variation indicated that high estimates of phenotypic (PCV) and genotypic (GCV) coefficients of variability were exhibited by number of grains/ spike (23.7 and 22.3), number of spikes/ m2 (26.1 and 24.14), spike weight (26.5 and 24.2) for PCV and GCV, respectively.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 16
Claim · model-written summary
Moderate or high drought stress significantly decreased all traits except spike length.
- Taxon
- Bread Wheat
Triticum aestivumt0 - Treatment
- moderate (two irrigations) or high stress (only one irrigation)e0
- Outcome
- all characters (except spike length)e0
- Direction
- decreasede0
- Comparator
- low drought stress (three irrigations)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“moderate (two irrigations) or high stress (only one irrigation) decreased significantly all characters (except spike length) compared with low drought stress (three irrigations)”
t0“Bread Wheat”
Claim · model-written summary
Spikelet number did not differ significantly between moderate and high stress.
- Taxon
- Bread WheatTriticum aestivumt0
- Treatment
- moderatee0
- Outcome
- No. of spikelets/ spikee0
- Comparator
- high drought stresse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“differences between moderate and high drought stress were not significant for No. of spikelets/ spike and No. of grains/ spike”
t0“Bread Wheat”
Claim · model-written summary
Grain number per spike did not differ significantly between moderate and high stress.
- Taxon
- Bread WheatTriticum aestivumt0
- Treatment
- moderatee0
- Outcome
- No. of grains/ spikee0
- Comparator
- high drought stresse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“differences between moderate and high drought stress were not significant for No. of spikelets/ spike and No. of grains/ spike”
t0“Bread Wheat”
Claim · model-written summary
The cultivars varied widely across studied characters.
- Taxon
- wheatTriticum aestivume0
- Outcome
- variations among wheat cultivarse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Large variations among wheat cultivars were recorded for all the studied characters”
Claim · model-written summary
Sids 12 had the most desirable spike and yield values across stress regimes.
- Taxon
- Bread WheatTriticum aestivumt0
- Material
- Sids 12e0
- Outcome
- most desirable values for spike length, No. of spikelets/ spike, No. of grains/ spike, spike weight and grain yielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sids 12 recorded the most desirable values for spike length, No. of spikelets/ spike, No. of grains/ spike, spike weight and grain yield”
t0“Bread Wheat”
Claim · model-written summary
Sids 12 and Misr 1 grain yields did not differ significantly.
- Taxon
- Bread WheatTriticum aestivumt0
- Material
- Sids 12e0
- Outcome
- grain yielde0
- Comparator
- Misr 1e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“differences between Sids 12 and Misr 1 were not significant for grain yield”
t0“Bread Wheat”
Claim · model-written summary
Misr 1 had the highest height, heading date, spike number and thousand grain weight.
- Taxon
- Bread WheatTriticum aestivumt0
- Material
- Misr 1e0
- Outcome
- plant height, heading date, No. of spikes/ m2 and 1000-grain weighte0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Misr 1 gave the highest values of plant height, heading date, No. of spikes/ m2 and 1000-grain weight”
t0“Bread Wheat”
Claim · model-written summary
Irrigation and cultivar interacted significantly for heading date, height, spike density, grain weight and yield.
- Taxon
- Bread WheatTriticum aestivumt0
- Treatment
- irrigation regimese0
- Outcome
- Heading date, plant height, spikes/ m2, 1000-grain weight and grain yielde0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Heading date, plant height, spikes/ m2, 1000-grain weight and grain yield were significantly affected by the interaction between irrigation regimes and wheat cultivars”
t0“Bread Wheat”
Claim · model-written summary
Misr 1 had the highest grain yield under low irrigation stress, 0.62 kg/m2.
- Taxon
- Bread WheatTriticum aestivumt0
- Material
- Misr 1e0
- Outcome
- grain yielde0
- Direction
- higheste0
- Value
- 0.62e0
- Qualifier
- low irrigation stresse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest grain yield was recorded for both Misr 1 and Sids 12 wheat cultivars under low irrigation stress (0.62 and 0.59 kg/ m2, respectively)”
t0“Bread Wheat”
Claim · model-written summary
Sids 12 grain yield under low irrigation stress was 0.59 kg/m2.
- Taxon
- Bread WheatTriticum aestivumt0
- Material
- Sids 12e0
- Outcome
- grain yielde0
- Direction
- higheste0
- Value
- 0.59 kg/ m2e0
- Qualifier
- low irrigation stresse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest grain yield was recorded for both Misr 1 and Sids 12 wheat cultivars under low irrigation stress (0.62 and 0.59 kg/ m2, respectively)”
t0“Bread Wheat”
Claim · model-written summary
Giza 168 yield did not differ significantly between moderate and high stress.
- Taxon
- Bread WheatTriticum aestivumt0
- Material
- Giza 168e0
- Treatment
- moderatee0
- Outcome
- grain yielde0
- Comparator
- high stresse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“differences between moderate and high stress were not significant (for grain yield) in case of Giza 168”
t0“Bread Wheat”
Claim · model-written summary
Spike density and thousand grain weight correlated positively with grain yield under low stress.
- Taxon
- Bread WheatTriticum aestivumt0
- Outcome
- grain yielde0
- Direction
- positivelye0
- Qualifier
- low drought stress conditione0
- Comparator
- No of spikes/ m2 and 1000-grain weighte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“under low drought stress condition, No of spikes/ m2 and 1000-grain weight was positively correlated with grain yield”
t0“Bread Wheat”
Claim · model-written summary
Spike length, spikelets, grains and spike weight correlated with grain yield under high stress.
- Taxon
- Bread WheatTriticum aestivumt0
- Outcome
- spike length, No. of spikelets/ spike, No. of grains/ spike and spike weighte0
- Qualifier
- high drought stress conditionse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“these traits were spike length, No. of spikelets/ spike, No. of grains/ spike and spike weight in case high drought stress conditions”
t0“Bread Wheat”
Claim · model-written summary
Grains per spike had phenotypic and genotypic variability coefficients of 23.7 and 22.3.
- Taxon
- Bread WheatTriticum aestivumt0
- Outcome
- number of grains/ spikee0
- Value
- 23.7 and 22.3e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“number of grains/ spike (23.7 and 22.3)”
t0“Bread Wheat”
Claim · model-written summary
Spikes per square metre had phenotypic and genotypic variability coefficients of 26.1 and 24.14.
- Taxon
- Bread WheatTriticum aestivumt0
- Outcome
- number of spikes/ m2e0
- Value
- 26.1 and 24.14e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“number of spikes/ m2 (26.1 and 24.14)”
t0“Bread Wheat”
Claim · model-written summary
Spike weight had phenotypic and genotypic variability coefficients of 26.5 and 24.2.
- Taxon
- Bread WheatTriticum aestivumt0
- Outcome
- spike weighte0
- Value
- 26.5 and 24.2e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“spike weight (26.5 and 24.2)”
t0“Bread Wheat”
The same questions in other papers
irrigation · yield · Triticum aestivum (wheat)Positive and negative results
190 papers in the same direction as this paper · 798 in the opposite direction
- positive
- positive
- positive
985 papers more in this group
See all 989 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.