Abstract
An analysis of the photosyntic physiological characteristics is conducted between two ecotypes of indigenous Leymus chinensis of the Songnen plain——one ecotype of yellowish green colour, the other of greyish green colour. The result shows that under high concentration of CO 2, the latter tops the former in light quantum utilization efficiency, thus boasting higher photosynthetic capacity than the former. Under dim light, the greyish-green L.chinensis exhibits higher photosynthetic rate than the other, though both register similar photosynthetic rate under intense light. The greyish-green ecotype needs intense light before its stomatal conductance starts to work, for it is blunter to light than the yellowish green type, whose stomatal conductance starts to work under dim light and increases its capacity with the intensifying of light. Under intense light when the CO 2 concentration reaches 700μ molmol -1 , its stomatal concluctance capacity exceeds that of the greyish-green type. The differences of stomatal conductance capacity and light quantum utilization efficiency between the two lead to their varient photosynthelic curves. It is the enzyme activity in the L.chinensis that induces the photosynthetic rate of the plant to decrease in high CO 2 concentration.
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Claims 8
Claim · model-written summary
Under high CO2, the greyish green ecotype had higher light quantum utilization efficiency than the yellowish green ecotype.
Verbatim
t0“Leymus chinensis”
e0“one ecotype of yellowish green colour, the other of greyish green colour”
e1“The result shows that under high concentration of CO 2, the latter tops the former in light quantum utilization efficiency, thus boasting higher photosynthetic capacity than the former”
Claim · model-written summary
Under high CO2, the greyish green ecotype had higher photosynthetic capacity than the yellowish green ecotype.
Verbatim
t0“Leymus chinensis”
e0“one ecotype of yellowish green colour, the other of greyish green colour”
e1“The result shows that under high concentration of CO 2, the latter tops the former in light quantum utilization efficiency, thus boasting higher photosynthetic capacity than the former”
Claim · model-written summary
Under dim light, the greyish-green ecotype had higher photosynthetic rate than the other ecotype.
Verbatim
t0“Leymus chinensis”
e2“Under dim light, the greyish-green L.chinensis exhibits higher photosynthetic rate than the other, though both register similar photosynthetic rate under intense light”
Claim · model-written summary
Under intense light, both ecotypes had similar photosynthetic rates.
Verbatim
t0“Leymus chinensis”
e2“Under dim light, the greyish-green L.chinensis exhibits higher photosynthetic rate than the other, though both register similar photosynthetic rate under intense light”
Claim · model-written summary
The greyish-green ecotype needed intense light before its stomatal conductance started to work.
- Taxon
- Leymus chinensisLeymus chinensist0
- Material
- greyish-greene3
- Outcome
- stomatal conductancee3
- Qualifier
- needs intense lighte3
Verbatim
t0“Leymus chinensis”
e3“The greyish-green ecotype needs intense light before its stomatal conductance starts to work”
Claim · model-written summary
The yellowish green ecotype started stomatal conductance under dim light.
- Taxon
- Leymus chinensisLeymus chinensist0
- Material
- yellowish greene0
- Outcome
- stomatal conductancee4
- Qualifier
- starts to work under dim lighte4
Verbatim
t0“Leymus chinensis”
e0“one ecotype of yellowish green colour, the other of greyish green colour”
e4“whose stomatal conductance starts to work under dim light and increases its capacity with the intensifying of light”
Claim · model-written summary
Under intense light the yellowish green ecotype had higher stomatal conductance capacity than the greyish-green type at high CO2.
Verbatim
t0“Leymus chinensis”
e5“Under intense light when the CO 2 concentration reaches 700”
e6“its stomatal concluctance capacity exceeds that of the greyish-green type”
Claim · model-written summary
Enzyme activity in Leymus chinensis is asserted to induce a decrease in photosynthetic rate under high CO2.
- Taxon
- L.chinensisLeymus chinensise6
- Treatment
- high CO 2 concentratione6
- Outcome
- photosynthetic rate of the plant to decreasee6
- Qualifier
- enzyme activitye6
Verbatim
e6“It is the enzyme activity in the L.chinensis that induces the photosynthetic rate of the plant to decrease in high CO 2 concentration”
The same questions in other papers
light · physiology: photosynthesis · Leymus chinensisPositive and negative results
1 paper in the same direction as this paper · 2 reporting no difference from an alternative
- positive
- positive
- negative
co2 · physiology: photosynthesis · Leymus chinensisResults agree
3 papers in the same direction as this paper
- positive
- positive
- positive
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.