Abstract
Differences of nitrogen uptake and utilization in different wheat cultivars under different irrigation amount and at different stages were studied with 15N tracing technique.Three irrigation regimes were applied in the present experiment: no irrigation during the whole growth season(represented as W0);irrigated both before sowing and at jointing stages(W1);irrigated 3 times,before sowing,at jointing and anthesis stages(W2).The results were as follows: under the same irrigation condition,total nitrogen accumulation amount,nitrogen accumulation amount derived from fertilizer and soil of cv.T23 were higher than those of cv.S664.Nitrogen accumulation amount derived from fertilizer and soil in vegetative organs at anthesis,in grain and vegetative organs at maturity of cv.T23,were higher than those of cv.S664.The above results indicated that cv.T23 had higher nitrogen absorptive capacity than cv.S664.Nitrogen translocation amount from fertilizer in vegetative organs after anthesis at treatment W2 was lower than that at treatment W1,while nitrogen translocation amount from soil had no significant change.However,nitrogen translocation amount both from fertilizer and soil were remarkably increased at treatment W2 compared with those at treatment W1.There were no significant difference on grain yield,grain protein yield and nitrogen use efficiency in cv.T23 plants between treatments W1 and W2,but grain protein content,irrigation benefit and water use efficiency at treatment W1 were higher.Grain yield and grain protein yield of cv.S664 at treatment W2 were higher than those at treatment W1,while there were no differences of grain protein content,nitrogen use efficiency,irrigation benefit and water use efficiency between treatments W1 and W2.In conclusion,treatment W1 is better irrigation model for cv.T23 while treatment W2 is better for cv.S664 because of high yield and high water/nitrogen use efficiency.
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Claims 12
Claim · model-written summary
T23 accumulated more total nitrogen than S664 under the same irrigation.
- Taxon
- wheat
Triticum aestivumt0 - Material
- cv.T23e0
- Outcome
- total nitrogen accumulation amounte0
- Direction
- highere0
- Comparator
- cv.S664e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“under the same irrigation condition,total nitrogen accumulation amount,nitrogen accumulation amount derived from fertilizer and soil of cv.T23 were higher than those of cv.S664.”
t0“wheat”
Claim · model-written summary
T23 accumulated more fertilizer and soil nitrogen than S664.
- Taxon
- wheatTriticum aestivumt0
- Material
- cv.T23e0
- Outcome
- nitrogen accumulation amount derived from fertilizer and soile0
- Direction
- highere0
- Comparator
- cv.S664e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“nitrogen accumulation amount derived from fertilizer and soil of cv.T23 were higher than those of cv.S664.”
t0“wheat”
Claim · model-written summary
T23 had greater nitrogen accumulation in vegetative organs at anthesis and in grain and vegetative organs at maturity.
- Taxon
- wheatTriticum aestivumt0
- Material
- cv.T23e0
- Outcome
- Nitrogen accumulation amount derived from fertilizer and soile0
- Direction
- highere0
- Comparator
- cv.S664e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nitrogen accumulation amount derived from fertilizer and soil in vegetative organs at anthesis,in grain and vegetative organs at maturity of cv.T23,were higher than those of cv.S664.”
t0“wheat”
Claim · model-written summary
Fertilizer nitrogen translocation after anthesis was lower under W2 than W1.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- W2e0
- Outcome
- Nitrogen translocation amount from fertilizer in vegetative organs after anthesise0
- Direction
- lowere0
- Comparator
- W1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nitrogen translocation amount from fertilizer in vegetative organs after anthesis at treatment W2 was lower than that at treatment W1”
t0“wheat”
Claim · model-written summary
Soil nitrogen translocation showed no significant change.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- nitrogen translocation amount from soile0
- Direction
- no significant changee0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“while nitrogen translocation amount from soil had no significant change.”
t0“wheat”
Claim · model-written summary
The authors also report increased fertilizer and soil nitrogen translocation under W2 versus W1.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- W2e0
- Outcome
- nitrogen translocation amount both from fertilizer and soile0
- Direction
- increasede0
- Comparator
- W1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“nitrogen translocation amount both from fertilizer and soil were remarkably increased at treatment W2 compared with those at treatment W1.”
t0“wheat”
Claim · model-written summary
T23 grain yield, grain protein yield and nitrogen use efficiency did not differ significantly between W1 and W2.
- Taxon
- wheatTriticum aestivumt0
- Material
- cv.T23e0
- Treatment
- W1e0
- Outcome
- grain yield,grain protein yield and nitrogen use efficiencye0
- Direction
- no significant differencee0
- Comparator
- W2e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There were no significant difference on grain yield,grain protein yield and nitrogen use efficiency in cv.T23 plants between treatments W1 and W2”
t0“wheat”
Claim · model-written summary
T23 grain protein content, irrigation benefit and water use efficiency were higher under W1.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- W1e0
- Outcome
- grain protein content,irrigation benefit and water use efficiencye0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“grain protein content,irrigation benefit and water use efficiency at treatment W1 were higher.”
t0“wheat”
Claim · model-written summary
S664 grain and protein yield were higher under W2 than W1.
- Taxon
- wheatTriticum aestivumt0
- Material
- cv.S664e0
- Treatment
- W2e0
- Outcome
- Grain yield and grain protein yielde0
- Direction
- highere0
- Comparator
- W1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Grain yield and grain protein yield of cv.S664 at treatment W2 were higher than those at treatment W1”
t0“wheat”
Claim · model-written summary
S664 grain protein content, nitrogen use efficiency, irrigation benefit and water use efficiency did not differ between W1 and W2.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- W1e0
- Outcome
- grain protein content,nitrogen use efficiency,irrigation benefit and water use efficiencye0
- Direction
- no differencese0
- Comparator
- W2e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there were no differences of grain protein content,nitrogen use efficiency,irrigation benefit and water use efficiency between treatments W1 and W2.”
t0“wheat”
Claim · model-written summary
W1 was the preferred irrigation model for T23.
- Taxon
- wheatTriticum aestivumt0
- Material
- cv.T23e0
- Outcome
- treatment W1 is better irrigation modele0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“treatment W1 is better irrigation model for cv.T23”
t0“wheat”
Claim · model-written summary
W2 was the preferred irrigation model for S664.
- Taxon
- wheatTriticum aestivumt0
- Material
- cv.S664e0
- Outcome
- treatment W2 is bettere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“treatment W2 is better for cv.S664 because of high yield and high water/nitrogen use efficiency.”
t0“wheat”