Abstract
Irrigation plays an important role in increasing crop production in China.However,sulphur(S) is another essential element in plant nutrition.Under some stress conditions,such as low mineral content in soils,soil erosion and high nutrient removal by crops may cause S deficiency in crops.Most of previous studies focused on effects of S on yield and quality for wheat.The aims of this study were to analyze the effects of S and irrigation(W) and their interaction on accumulation of dry matter during wheat growth period,and distributions of carbon(C),nitrogen(N) and S at the maturity,and grain yield and its main components at the harvest.Two medium-gluten wheat cultivars(a multiple spike Yunong 949 and a large spike Lankao Aizao 8) were used in field experiments with different S and W treatments in 2009-2010 wheat growing season.The results show that the dry matter accumulations of the two cultivars under the S60 treatments are significantly higher than those of the S0 treatments at the anthesis and maturity stages with the increasing of irrigation times.Comparing with S0,organ dry matter weights at the maturity are increased under the irrigation combined with S application,and the increased grain weight is higher than those of the other organs,but no significant differences in the dry matter distribution among the organs.The S application could increase the contents of N and S in grain,but the N contents of grain and vegetative organs are decreased with the increase of irrigation times.With the increase of irrigation times,the S application promotes grain-number per spike,1000-grain weight and grain yield,and their maximum values are reached under the S60W2 treatment.Especially,the grain yield of S60W2 is increased by 34.29% compared to the S0W0 treatment,and the yield of Yunong949 is significantly higher than that of Lankao Aizao8.In conclusion,S60W1 or S60W2 in the study could increase dry matter accumulations,the contents of C,N and S,and gain yields of two winter wheat cultivars,but some differences exist in the cultivars.
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Claims 11
Claim · model-written summary
S60 significantly increased dry-matter accumulation over S0 at anthesis and maturity as irrigation increased.
- Taxon
- winter wheat
Triticum aestivumt0 - Organ / stage
- anthesis and maturity stagese0
- Treatment
- S60 treatmentse0
- Outcome
- dry matter accumulationse0
- Direction
- highere0
- Comparator
- S0 treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“dry matter accumulations of the two cultivars under the S60 treatments are significantly higher than those of the S0 treatments at the anthesis and maturity stages with the increasing of irrigation times”
t0“winter wheat”
Claim · model-written summary
Irrigation plus sulfur increased organ dry-matter weights at maturity relative to S0.
- Taxon
- winter wheatTriticum aestivumt0
- Organ / stage
- maturitye0
- Treatment
- irrigation combined with S applicatione0
- Outcome
- organ dry matter weightse0
- Direction
- increasede0
- Comparator
- S0e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Comparing with S0,organ dry matter weights at the maturity are increased under the irrigation combined with S application”
t0“winter wheat”
Claim · model-written summary
Grain dry-weight increase exceeded other organs under irrigation and sulfur.
- Taxon
- winter wheatTriticum aestivumt0
- Treatment
- irrigation combined with S applicatione1
- Outcome
- grain weighte0
- Direction
- highere0
- Comparator
- other organse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the increased grain weight is higher than those of the other organs”
e1“organ dry matter weights at the maturity are increased under the irrigation combined with S application”
t0“winter wheat”
Claim · model-written summary
Dry-matter distribution among organs showed no significant difference.
- Taxon
- winter wheatTriticum aestivumt0
- Organ / stage
- organse0
- Outcome
- dry matter distributione0
- Direction
- no significant differencese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“no significant differences in the dry matter distribution among the organs”
t0“winter wheat”
Claim · model-written summary
Sulfur application increased grain nitrogen and sulfur contents.
- Taxon
- winter wheatTriticum aestivumt0
- Organ / stage
- graine0
- Treatment
- S applicatione0
- Outcome
- contents of N and S in graine0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The S application could increase the contents of N and S in grain”
t0“winter wheat”
Claim · model-written summary
More irrigation decreased grain nitrogen content.
- Taxon
- winter wheatTriticum aestivumt0
- Organ / stage
- graine0
- Treatment
- increase of irrigation timese0
- Outcome
- N contents of graine0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the N contents of grain and vegetative organs are decreased with the increase of irrigation times”
t0“winter wheat”
Claim · model-written summary
More irrigation decreased vegetative-organ nitrogen content.
- Taxon
- winter wheatTriticum aestivumt0
- Organ / stage
- vegetative organse0
- Treatment
- increase of irrigation timese0
- Outcome
- N contents of grain and vegetative organse0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the N contents of grain and vegetative organs are decreased with the increase of irrigation times”
t0“winter wheat”
Claim · model-written summary
Under increasing irrigation, sulfur application promoted grains per spike, thousand-grain weight and yield, maximized at S60W2.
- Taxon
- winter wheatTriticum aestivumt0
- Treatment
- S applicatione0
- Outcome
- grain-number per spike,1000-grain weight and grain yielde0
- Direction
- promotese0
- Qualifier
- S60W2 treatmente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With the increase of irrigation times,the S application promotes grain-number per spike,1000-grain weight and grain yield,and their maximum values are reached under the S60W2 treatment”
t0“winter wheat”
Claim · model-written summary
S60W2 raised grain yield by 34.29% relative to S0W0.
- Taxon
- winter wheatTriticum aestivumt0
- Treatment
- S60W2e0
- Outcome
- grain yielde0
- Direction
- increasede0
- Value
- 34.29%e0
- Comparator
- S0W0 treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the grain yield of S60W2 is increased by 34.29% compared to the S0W0 treatment”
t0“winter wheat”
Claim · model-written summary
Yunong949 yielded significantly more than Lankao Aizao8.
- Taxon
- winter wheatTriticum aestivumt0
- Material
- Yunong949e0
- Outcome
- yielde0
- Direction
- highere0
- Comparator
- Lankao Aizao8e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the yield of Yunong949 is significantly higher than that of Lankao Aizao8”
t0“winter wheat”
Claim · model-written summary
The authors concluded S60W1 or S60W2 increased dry matter and carbon, nitrogen and sulfur contents and grain yields, with cultivar differences.
- Taxon
- winter wheatTriticum aestivumt0
- Outcome
- S60W1 or S60W2e0
- Qualifier
- some differences exist in the cultivarse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“S60W1 or S60W2 in the study could increase dry matter accumulations,the contents of C,N and S,and gain yields of two winter wheat cultivars,but some differences exist in the cultivars”
t0“winter wheat”
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