Paper · 2000

STUDIES ON PHYSIOLOGICAL MECHANISH OF GENOTPIC DIFFERENCES IN NPK-EFFICIENCY AMONG SPRING WHEAT GENOTYPES

P Hotosynthetic

6
claims
12
verbatim quotes
0
citations
2
research areas
—
Not open access

Abstract

Field experiments were conducted to study on the genotypic differences and their relationship of leaf area index (LAI), leaf area duration (LAD) net assimilation rate (NAR) and crop growth rate (CGR) in tolerance to low NPK nutrients among high, medium and low efficiency wheat without fertilization and with fertilization. The result showed that high efficiency genotypes in tolerance to low NPK nutrients have higher LAI, LAD and NAR without fertilization, and have higher RLAI, PNAR, RLAD, RCGR, low efficiency genotypes were conversely. The result of correlation analysis showed that there were significantly positive relationships among RGY, GY CK , RLAD , RNAR and RCGR. As a result, high genotypes in tolarance to low NPK nutrients without fertilization have higher leaf area duration and could get higher yield, low efficiency genotypes have higher LAI, LAD, CGR and could get higher yield only with enough fertilization. Medium efficiency genotypes lay between high and low efficiency genotypes.

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Claims 6

Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

High efficiency wheat genotypes had higher LAI, LAD and NAR without fertilization.

Material
high efficiency genotypese0
Outcome
LAI, LAD and NARe0
Direction
highere0
Qualifier
without fertilizatione0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“high efficiency genotypes in tolerance to low NPK nutrients have higher LAI, LAD and NAR without fertilization”

✓ located verbatim in the source · abstract, characters 347–457 · show in text ↑
t0

“SPRING WHEAT GENOTYPES”

✓ located verbatim in the source · title, characters 83–105 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

High efficiency genotypes had higher RLAI, PNAR, RLAD and RCGR.

Outcome
RLAI, PNAR, RLAD, RCGRe0
Direction
highere0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“have higher RLAI, PNAR, RLAD, RCGR”

✓ located verbatim in the source · abstract, characters 463–497 · show in text ↑
t0

“SPRING WHEAT GENOTYPES”

✓ located verbatim in the source · title, characters 83–105 · show in text ↑
Associationobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

RGY, GY CK, RLAD, RNAR and RCGR were significantly positively related.

Organ / stage
SPRINGt0
Outcome
positive relationships among RGY, GY CK , RLAD , RNAR and RCGRe0
Direction
positivee0
Qualifier
significantlye0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“there were significantly positive relationships among RGY, GY CK , RLAD , RNAR and RCGR”

✓ located verbatim in the source · abstract, characters 588–675 · show in text ↑
t0

“SPRING WHEAT GENOTYPES”

✓ located verbatim in the source · title, characters 83–105 · show in text ↑
Associationauthor interpretationoriginal resultpositivemeasured

Claim · model-written summary

High genotypes achieved higher yield without fertilization with higher leaf area duration.

Material
high genotypese0
Outcome
yielde0
Direction
highere0
Qualifier
without fertilizatione0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“high genotypes in tolarance to low NPK nutrients without fertilization have higher leaf area duration and could get higher yield”

✓ located verbatim in the source · abstract, characters 690–818 · show in text ↑
t0

“SPRING WHEAT GENOTYPES”

✓ located verbatim in the source · title, characters 83–105 · show in text ↑
Associationauthor interpretationoriginal resultpositivemeasured

Claim · model-written summary

Low efficiency genotypes achieved higher yield only with enough fertilization.

Material
low efficiency genotypese0
Treatment
enough fertilizatione0
Outcome
yielde0
Direction
highere0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“low efficiency genotypes have higher LAI, LAD, CGR and could get higher yield only with enough fertilization”

✓ located verbatim in the source · abstract, characters 820–928 · show in text ↑
t0

“SPRING WHEAT GENOTYPES”

✓ located verbatim in the source · title, characters 83–105 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Medium efficiency genotypes lay between high and low efficiency genotypes.

Material
Medium efficiency genotypese0
Outcome
lay between high and low efficiency genotypese0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Medium efficiency genotypes lay between high and low efficiency genotypes.”

✓ located verbatim in the source · abstract, characters 930–1004 · show in text ↑
t0

“SPRING WHEAT GENOTYPES”

✓ located verbatim in the source · title, characters 83–105 · show in text ↑