Paper · 2004 · Zhongguo shuidao kexue

Effect of Water Management on Photosynthetic Rate and Water Use Efficiency of Leaves in Paddy Rice

Wei Zhou

5
claims
9
verbatim quotes
8
citations
2
research areas
—
Not open access

Abstract

Photosynthetic rate and water use efficiency of rice leaves at the stages of panicle initiation, flowering and 20 days after flowering were determined under three different water managements with two super hybrid rice combinations of Liangyoupeijiu and Zhongyou 6. Different water managements had an important effect on above ground dry weight, leaf area index, leaf photosynthetic rate, leaf transpiration rate and water use efficiency. The above ground dry weight and water use efficiency were increased under the conditions of aerobic irrigation. Leaf transpiration rate, above ground dry weight and water use efficiency were all decreased under the conditions of low water level. Above ground dry weight, leaf area index, leaf photosynthetic rate, leaf transpiration rate and water use efficiency under the conditions of submerged were less than those under the conditions of aerobic irrigation. Water managements had no significant effect on protein content of rice grain.

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The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.

Claims 5

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Aerobic irrigation increased above ground dry weight and water use efficiency.

Treatment
aerobic irrigatione0
Outcome
above ground dry weight and water use efficiencye0
Direction
increasede0

Not reportedComparator

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

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“The above ground dry weight and water use efficiency were increased under the conditions of aerobic irrigation.”

✓ located verbatim in the source · abstract, characters 438–549 · show in text ↑
t0

“Paddy Rice”

✓ located verbatim in the source · title, characters 88–98 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Low water level decreased leaf transpiration, above ground dry weight and water use efficiency.

Treatment
low water levele0
Outcome
Leaf transpiration rate, above ground dry weight and water use efficiencye0
Direction
decreasede0

Not reportedComparator

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

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“Leaf transpiration rate, above ground dry weight and water use efficiency were all decreased under the conditions of low water level.”

✓ located verbatim in the source · abstract, characters 550–683 · show in text ↑
t0

“Paddy Rice”

✓ located verbatim in the source · title, characters 88–98 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Submerged management produced less above ground dry weight, leaf area index and photosynthetic rate than aerobic irrigation.

Treatment
submergede0
Outcome
Above ground dry weight, leaf area index, leaf photosynthetic ratee0
Direction
less thane0
Comparator
aerobic irrigatione0

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

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“Above ground dry weight, leaf area index, leaf photosynthetic rate, leaf transpiration rate and water use efficiency under the conditions of submerged were less than those under the conditions of aerobic irrigation.”

✓ located verbatim in the source · abstract, characters 684–899 · show in text ↑
t0

“Paddy Rice”

✓ located verbatim in the source · title, characters 88–98 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Submerged management produced less leaf transpiration and water use efficiency than aerobic irrigation.

Treatment
submergede0
Outcome
leaf transpiration rate and water use efficiencye0
Direction
less thane0
Comparator
aerobic irrigatione0

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

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“Above ground dry weight, leaf area index, leaf photosynthetic rate, leaf transpiration rate and water use efficiency under the conditions of submerged were less than those under the conditions of aerobic irrigation.”

✓ located verbatim in the source · abstract, characters 684–899 · show in text ↑
t0

“Paddy Rice”

✓ located verbatim in the source · title, characters 88–98 · show in text ↑
Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Water management had no significant effect on rice grain protein content.

Treatment
Water managementse0
Outcome
protein content of rice graine0
Direction
no significant effecte0

Not reportedComparator

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

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“Water managements had no significant effect on protein content of rice grain.”

✓ located verbatim in the source · abstract, characters 900–977 · show in text ↑

flooding · physiology: gas exchange · Oryza sativa (rice)Positive and negative results

3 papers: 2 positive, 1 negative or no effect

2 in the opposite direction

  1. positive
  2. positive
See all 3 papers →

irrigation · physiology: gas exchange · Oryza sativa (rice)Positive and negative results

18 papers: 11 positive, 7 negative or no effect

6 papers in the same direction as this paper · 11 in the opposite direction

  1. positive
  2. positive
  3. positive

14 papers more in this group

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flooding · physiology: photosynthesis · Oryza sativa (rice)Positive and negative results

26 papers: 8 positive, 18 negative or no effect

17 papers in the same direction as this paper · 8 in the opposite direction

  1. positive
  2. positive
  3. positive

22 papers more in this group

See all 26 papers →

irrigation · physiology: water · Oryza sativa (rice)Positive and negative results

380 papers: 350 positive, 30 negative or no effect

349 papers in the same direction as this paper · 25 in the opposite direction · 5 reporting no difference from an alternative

  1. negative
  2. no effect
  3. no effect

376 papers more in this group

See all 380 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.