Abstract
It is suggested that cultivars of wheat (Triticum aestivum L.) with regulated growth and development would be able to produce higher yields under water-limited conditions, which is crucial in future food production. Water use efficiency (WUE) is worthy of exploration in this regard. In this study, the effects of nitrogen fertilizer levels (0, 40 and 80 kg Nha-1) and a plant growth retardant (Chlormequat Chloride = CCC) on WUE of four dryland wheat cultivars (Agosta, Nicknejad, Azar-2 and Fin-15) were examined in a field experiment during 2006-07 and 2007-08 growing seasons at College of Agriculture, Shiraz University, Iran. The results showed that there existed significant differences between cultivars for grain yield, biomass and WUE. In the first season, the highest grain yield and biomass production (192.4 and 431.2 gm-2, respectively) were obtained from Nicknejad cultivar, CCC application and using 80 kg Nha-1, and in the second season, from Azar-2 cultivar (121.5 and 333.5 gm-2, respectively). CCC and nitrogen had significant effects on photosynthesis rate and WUE in both seasons. Interaction of CCC and 80 kg Nha-1 on WUE were significant in both seasons (1.24 and 2.72 gm-2mm-1, respectively). It is suggested that interactive application of CCC and nitrogen fertilizer could have beneficial effects on wheat grain yield under similar agro-climatic conditions.
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Claims 8
Claim · model-written summary
Cultivars differed significantly in grain yield, biomass and WUE.
- Taxon
- Wheat
Triticum aestivumt0 - Material
- cultivarse0
- Outcome
- grain yield, biomass and WUEe0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“significant differences between cultivars for grain yield, biomass and WUE”
t0“Wheat”
Claim · model-written summary
Nicknejad with CCC and 80 kg Nha-1 had the highest first-season grain yield, 192.4 gm-2.
- Taxon
- WheatTriticum aestivumt0
- Material
- Nicknejad cultivare0
- Treatment
- CCC application and using 80 kg Nha-1e0
- Outcome
- grain yielde0
- Direction
- higheste0
- Value
- 192.4e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the first season, the highest grain yield and biomass production (192.4 and 431.2 gm-2, respectively) were obtained from Nicknejad cultivar, CCC application and using 80 kg Nha-1”
t0“Wheat”
Claim · model-written summary
Nicknejad with CCC and 80 kg Nha-1 had the highest first-season biomass, 431.2 gm-2.
- Taxon
- WheatTriticum aestivumt0
- Material
- Nicknejad cultivare0
- Treatment
- CCC application and using 80 kg Nha-1e0
- Outcome
- biomass productione0
- Direction
- higheste0
- Value
- 431.2 gm-2e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the first season, the highest grain yield and biomass production (192.4 and 431.2 gm-2, respectively) were obtained from Nicknejad cultivar, CCC application and using 80 kg Nha-1”
t0“Wheat”
Claim · model-written summary
Azar-2 had the highest second-season grain yield, 121.5 gm-2.
- Taxon
- WheatTriticum aestivumt0
- Material
- Azar-2 cultivare0
- Value
- 121.5e0
Not reportedOutcomeDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in the second season, from Azar-2 cultivar (121.5 and 333.5 gm-2, respectively)”
t0“Wheat”
Claim · model-written summary
Azar-2 had the highest second-season biomass, 333.5 gm-2.
- Taxon
- WheatTriticum aestivumt0
- Material
- Azar-2 cultivare0
- Value
- 333.5 gm-2e0
Not reportedOutcome
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in the second season, from Azar-2 cultivar (121.5 and 333.5 gm-2, respectively)”
t0“Wheat”
Claim · model-written summary
CCC and nitrogen significantly affected photosynthesis rate in both seasons.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- CCC and nitrogene0
- Outcome
- photosynthesis ratee0
- Qualifier
- both seasonse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“CCC and nitrogen had significant effects on photosynthesis rate and WUE in both seasons”
t0“Wheat”
Claim · model-written summary
CCC and nitrogen significantly affected WUE in both seasons.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- CCC and nitrogene0
- Outcome
- WUEe0
- Qualifier
- both seasonse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“CCC and nitrogen had significant effects on photosynthesis rate and WUE in both seasons”
t0“Wheat”
Claim · model-written summary
CCC and 80 kg Nha-1 interacted significantly for WUE in both seasons, with values of 1.24 and 2.72 gm-2mm-1.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- CCC and 80 kg Nha-1e0
- Outcome
- WUEe0
- Value
- 1.24 and 2.72 gm-2mm-1e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Interaction of CCC and 80 kg Nha-1 on WUE were significant in both seasons (1.24 and 2.72 gm-2mm-1, respectively)”
t0“Wheat”
The same questions in other papers
chlormequat chloride · yield · Triticum aestivum (wheat)Results differ
52 papers in the same direction as this paper · 18 in the opposite direction
- positive
- no effect
- no effect
67 papers more in this group
See all 71 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.