Abstract
DROUGHT is a serious abiotic stress affects crop production in Egypt and worldwide. Two experiments were carried out under drought stress and normal irrigation during the seasons of 2018/19 and 2019/20 to study the effect of foliar application of Zn to alleviate drought stress. The soil texture is clay. The genetic materials were three Egyptian cultivars; Sakha 69, Giza 68 and Gemmieza 11. The levels of foliar spray of zinc oxide were 500ppm, 250 ppm, water and control (no treatment), sprayed two weeks before and at anthesis. Mean squares of the combined data was significant (P≤ 0.01) for Zn levels and for yield traits except for spike length. The differences among cultivars were significant (P≤ 0.01) except for yield under irrigation. This confirms the concept of “selection for yield under stress is better than under favorable environment”. The traits plant height (PH), number of spikes/plant (NS/P), biological yield/plant (BY/P), grain yield/plant (GY/P) and 100GW showed the best performance at the higher Zn level 500ppm. Water deficit exerted negative effects on RWC% and chlorophyll. The reduction % (the difference between irrigation and drought stress relative to irrigation performance) in all traits was the lowest at 500ppm of Zn and increased ascendingly by decreasing the Zn level. Sakha 69 significantly showed the best performance for PH, NS/P and BY/P under both, drought stress and normal irrigation. It could be concluded that Zn foliar application alleviated drought stress, and Sakha 69 was the most stable cultivar in GY/P and gave the best performance under drought stress.
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Claims 10
Claim · model-written summary
Foliar zinc at 500 ppm gave the best performance for plant height, spikes per plant and biological yield per plant in wheat
- Taxon
- Wheat (Triticum aestivum L.)
Triticum aestivumt0 - Treatment
- higher Zn level 500ppme1
- Outcome
- plant height (PH), number of spikes/plant (NS/P), biological yield/plant (BY/P)e1
- Direction
- best performancee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Role of Zinc on Drought Tolerance in Some Wheat (Triticum aestivum L.) Cultivars under Reduced Soil Water”
e1“The traits plant height (PH), number of spikes/plant (NS/P), biological yield/plant (BY/P), grain yield/plant (GY/P) and 100GW showed the best performance at the higher Zn level 500ppm”
Claim · model-written summary
Foliar zinc at 500 ppm gave the best performance for grain yield per plant and 100-grain weight in wheat
- Taxon
- Wheat (Triticum aestivum L.)Triticum aestivumt0
- Treatment
- higher Zn level 500ppme1
- Outcome
- grain yield/plant (GY/P) and 100GWe1
- Direction
- best performancee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Role of Zinc on Drought Tolerance in Some Wheat (Triticum aestivum L.) Cultivars under Reduced Soil Water”
e1“The traits plant height (PH), number of spikes/plant (NS/P), biological yield/plant (BY/P), grain yield/plant (GY/P) and 100GW showed the best performance at the higher Zn level 500ppm”
Claim · model-written summary
Water deficit had negative effects on relative water content and chlorophyll in wheat
- Taxon
- Wheat (Triticum aestivum L.)Triticum aestivumt0
- Treatment
- Water deficite2
- Outcome
- RWC% and chlorophylle2
- Direction
- negative effectse2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Role of Zinc on Drought Tolerance in Some Wheat (Triticum aestivum L.) Cultivars under Reduced Soil Water”
e2“Water deficit exerted negative effects on RWC% and chlorophyll”
Claim · model-written summary
The drought-induced reduction percentage in all traits was lowest at 500 ppm Zn and rose as Zn level decreased
- Taxon
- Wheat (Triticum aestivum L.)Triticum aestivumt0
- Treatment
- 500ppm of Zne3
- Outcome
- reduction %e3
- Direction
- loweste3
- Comparator
- decreasing the Zn levele3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Role of Zinc on Drought Tolerance in Some Wheat (Triticum aestivum L.) Cultivars under Reduced Soil Water”
e3“The reduction % (the difference between irrigation and drought stress relative to irrigation performance) in all traits was the lowest at 500ppm of Zn and increased ascendingly by decreasing the Zn level”
Claim · model-written summary
Sakha 69 significantly gave the best performance for plant height, spikes per plant and biological yield per plant under drought and normal irrigation
- Taxon
- Wheat (Triticum aestivum L.)Triticum aestivumt0
- Material
- Sakha 69e4
- Outcome
- PH, NS/P and BY/Pe4
- Direction
- best performancee4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Role of Zinc on Drought Tolerance in Some Wheat (Triticum aestivum L.) Cultivars under Reduced Soil Water”
e4“Sakha 69 significantly showed the best performance for PH, NS/P and BY/P under both, drought stress and normal irrigation”
Claim · model-written summary
Foliar zinc application alleviated drought stress in wheat, as the authors conclude
- Taxon
- Wheat (Triticum aestivum L.)Triticum aestivumt0
- Treatment
- Zn foliar applicatione5
- Outcome
- drought stresse5
- Direction
- alleviatede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Role of Zinc on Drought Tolerance in Some Wheat (Triticum aestivum L.) Cultivars under Reduced Soil Water”
e5“It could be concluded that Zn foliar application alleviated drought stress”
Claim · model-written summary
Sakha 69 was the most stable cultivar for grain yield per plant under drought
- Taxon
- Wheat (Triticum aestivum L.)Triticum aestivumt0
- Material
- Sakha 69e6
- Outcome
- GY/Pe6
- Direction
- most stablee6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Role of Zinc on Drought Tolerance in Some Wheat (Triticum aestivum L.) Cultivars under Reduced Soil Water”
e6“Sakha 69 was the most stable cultivar in GY/P and gave the best performance under drought stress”
Claim · model-written summary
Sakha 69 gave the best performance under drought stress
- Taxon
- Wheat (Triticum aestivum L.)Triticum aestivumt0
- Material
- Sakha 69e6
- Outcome
- performance under drought stresse6
- Direction
- best performancee6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Role of Zinc on Drought Tolerance in Some Wheat (Triticum aestivum L.) Cultivars under Reduced Soil Water”
e6“Sakha 69 was the most stable cultivar in GY/P and gave the best performance under drought stress”
Claim · model-written summary
Zn levels had significant effects on yield traits in wheat
- Taxon
- Wheat (Triticum aestivum L.)Triticum aestivumt0
- Treatment
- Zn levelse7
- Outcome
- yield traitse7
- Qualifier
- P≤ 0.01e7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Role of Zinc on Drought Tolerance in Some Wheat (Triticum aestivum L.) Cultivars under Reduced Soil Water”
e7“Mean squares of the combined data was significant (P≤ 0.01) for Zn levels and for yield traits except for spike length”
Claim · model-written summary
Cultivar differences in wheat were significant for the traits measured except yield under irrigation
- Taxon
- Wheat (Triticum aestivum L.)Triticum aestivumt0
- Outcome
- differences among cultivarse7
- Qualifier
- except for yield under irrigatione7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Role of Zinc on Drought Tolerance in Some Wheat (Triticum aestivum L.) Cultivars under Reduced Soil Water”
e7“The differences among cultivars were significant (P≤ 0.01) except for yield under irrigation”
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