Abstract
Four day etiolated green-gram plants, of which stems elongated enormously at the cost of leaf growth, were grown under varying light intensity (100, 75, 50, 30 and 20% of daylight), and their growth response to the shading was determined and compared with that of untreated green-gram plants.1. The trends of growth, in dry weight as well as in leaf area, of the dark-treated DN- and DO-series were similar to those of the untreated N- and O-series.But the final values of plant weight or leaf area were markedly small in the dark-treated as compared with those of the untreated.2. The relations of the relative growth rate (RGR), the net assimilation rate (NAR) and the leaf area ratio (LAR) to the varying light intensity showed in the dark treated plants also the trends similar to those of the untreated.3. The NARs in the earlier stages (Aug. 13-27) were much higher in the dark-treated series (especially in the 100, 75 and 50% plot) than those in the untreated series, while the LARs of the former were smaller in all the plots, and consequently the RGRs were scarcely affected by the dark-treatment. In the later stages, however, no difference in these three measures could be observed between the two series.4. In the initial three days (Aug. 11-13) the RGR of the DN-100 plants was low, 0.14mg/mg/day, as compared to 0.23mg/mg/day of the N-100. Such low RGR may bring about the low final plant weight of the DN- and DO-plants.5. The leaf area/leaf weight ratio (F/F) of the DN- and DO-plants increased markedly with decreasing illumination and gave nearly identical results with those of the untreated plants.6. The N- and O-plants maintained the C/F ratio, the ratio of the non-photosynthetic to the photosynthetic system, of 1.0-1.5 throughout the whole experimental period, while the DN- and DO-plants, placed in full daylight after 4 day dark treatment, dropped rapidly C/F ratio of 7-8 at first and then slowly, it approaching to a level of 1.0. The high C/F ratio should be largely responsible for the low RGR observed in the initial few days following the dark-period.
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Claims 14
Claim · model-written summary
Dark-treated green-gram plants had markedly smaller final plant weight and leaf area than untreated plants.
- Taxon
- Green-gram
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Vigna radiata var. radiatat0 - Treatment
- dark-treatede1
- Outcome
- final values of plant weight or leaf areae1
- Direction
- markedly smalle1
- Comparator
- untreatede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
t0“Dark-treated Green-gram”
e1“the final values of plant weight or leaf area were markedly small in the dark-treated as compared with those of the untreated”
Claim · model-written summary
Growth trends in dry weight and leaf area of dark-treated plants were similar to those of untreated plants.
- Taxon
- Green-gramVigna radiata var. radiatat0
- Treatment
- dark-treated DN- and DO-seriese2
- Outcome
- trends of growth, in dry weight as well as in leaf areae2
- Direction
- similare2
- Comparator
- untreated N- and O-seriese2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Dark-treated Green-gram”
e2“The trends of growth, in dry weight as well as in leaf area, of the dark-treated DN- and DO-series were similar to those of the untreated N- and O-series”
Claim · model-written summary
Relations of RGR, NAR and LAR to varying light intensity showed similar trends in dark-treated and untreated plants.
- Taxon
- Green-gramVigna radiata var. radiatat0
- Treatment
- varying light intensitye3
- Outcome
- the relative growth rate (RGR), the net assimilation rate (NAR) and the leaf area ratio (LAR)e3
- Direction
- similare3
- Comparator
- untreatede3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Dark-treated Green-gram”
e3“the relative growth rate (RGR), the net assimilation rate (NAR) and the leaf area ratio (LAR) to the varying light intensity showed in the dark treated plants also the trends similar to those of the untreated”
Claim · model-written summary
In earlier stages, net assimilation rate was much higher in dark-treated series than in untreated series.
- Taxon
- Green-gramVigna radiata var. radiatat0
- Organ / stage
- earlier stages (Aug. 13-27)e4
- Treatment
- dark-treated seriese4
- Outcome
- NARse4
- Direction
- much highere4
- Comparator
- untreated seriese4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Dark-treated Green-gram”
e4“The NARs in the earlier stages (Aug. 13-27) were much higher in the dark-treated series (especially in the 100, 75 and 50% plot) than those in the untreated series”
Claim · model-written summary
Leaf area ratio of dark-treated plants was smaller in all plots in earlier stages.
- Taxon
- Green-gramVigna radiata var. radiatat0
- Treatment
- dark-treatmente5
- Outcome
- LARse5
- Direction
- smallere5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Dark-treated Green-gram”
e5“while the LARs of the former were smaller in all the plots, and consequently the RGRs were scarcely affected by the dark-treatment”
Claim · model-written summary
Relative growth rate was scarcely affected by dark treatment.
- Taxon
- Green-gramVigna radiata var. radiatat0
- Treatment
- dark-treatmente5
- Outcome
- RGRse5
- Direction
- scarcely affectede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Dark-treated Green-gram”
e5“while the LARs of the former were smaller in all the plots, and consequently the RGRs were scarcely affected by the dark-treatment”
Claim · model-written summary
In later stages, no difference in NAR, LAR or RGR was observed between the two series.
- Taxon
- Green-gramVigna radiata var. radiatat0
- Organ / stage
- later stagese6
- Outcome
- these three measurese6
- Direction
- no differencee6
- Comparator
- the two seriese6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Dark-treated Green-gram”
e6“In the later stages, however, no difference in these three measures could be observed between the two series”
Claim · model-written summary
Initial three-day RGR of DN-100 plants was low (0.14 mg/mg/day) compared with 0.23 mg/mg/day for N-100.
- Taxon
- Green-gramVigna radiata var. radiatat0
- Organ / stage
- initial three days (Aug. 11-13)e7
- Treatment
- DN-100 plantse7
- Outcome
- RGRe7
- Direction
- lowe7
- Value
- 0.14mg/mg/daye7
- Qualifier
- 0.23mg/mg/day of the N-100e7
- Comparator
- N-100e7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Dark-treated Green-gram”
e7“In the initial three days (Aug. 11-13) the RGR of the DN-100 plants was low, 0.14mg/mg/day, as compared to 0.23mg/mg/day of the N-100”
Claim · model-written summary
Low RGR may bring about the low final plant weight of DN- and DO-plants.
- Taxon
- Green-gramVigna radiata var. radiatat0
- Outcome
- final plant weighte2
- Qualifier
- Such low RGR may bring aboute2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Dark-treated Green-gram”
e2“Such low RGR may bring about the low final plant weight of the DN- and DO-plants”
Claim · model-written summary
Leaf area/leaf weight ratio of DN- and DO-plants increased markedly with decreasing illumination.
- Taxon
- Green-gramVigna radiata var. radiatat0
- Treatment
- decreasing illuminatione2
- Outcome
- leaf area/leaf weight ratio (F/F)e2
- Direction
- increased markedlye2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Dark-treated Green-gram”
e2“The leaf area/leaf weight ratio (F/F) of the DN- and DO-plants increased markedly with decreasing illumination”
Claim · model-written summary
Leaf area/leaf weight ratio of DN- and DO-plants gave nearly identical results to untreated plants.
- Taxon
- Green-gramVigna radiata var. radiatat0
- Treatment
- DN- and DO-plantse2
- Outcome
- leaf area/leaf weight ratio (F/F)e2
- Direction
- nearly identicale2
- Comparator
- untreated plantse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Dark-treated Green-gram”
e2“The leaf area/leaf weight ratio (F/F) of the DN- and DO-plants increased markedly with decreasing illumination and gave nearly identical results with those of the untreated plants”
Claim · model-written summary
C/F ratio of untreated N- and O-plants was maintained at 1.0-1.5 throughout the experiment.
- Taxon
- Green-gramVigna radiata var. radiatat0
- Outcome
- C/F ratioe2
- Direction
- maintainede2
- Value
- 1.0-1.5e2
- Qualifier
- throughout the whole experimental periode2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Dark-treated Green-gram”
e2“The N- and O-plants maintained the C/F ratio, the ratio of the non-photosynthetic to the photosynthetic system, of 1.0-1.5 throughout the whole experimental period”
Claim · model-written summary
After placement in full daylight, C/F ratio of DN- and DO-plants dropped rapidly from 7-8 and then slowly approached 1.0.
- Taxon
- Green-gramVigna radiata var. radiatat0
- Treatment
- placed in full daylight after 4 day dark treatmente3
- Outcome
- C/F ratioe3
- Direction
- dropped rapidlye3
- Value
- 7-8e3
- Comparator
- N- and O-plantse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Dark-treated Green-gram”
e2“The N- and O-plants maintained the C/F ratio, the ratio of the non-photosynthetic to the photosynthetic system, of 1.0-1.5 throughout the whole experimental period”
e3“the DN- and DO-plants, placed in full daylight after 4 day dark treatment, dropped rapidly C/F ratio of 7-8 at first and then slowly, it approaching to a level of 1.0”
Claim · model-written summary
High C/F ratio should be largely responsible for the low RGR in the initial days after the dark period.
- Taxon
- Green-gramVigna radiata var. radiatat0
- Outcome
- low RGRe2
- Qualifier
- The high C/F ratio should be largely responsiblee2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Dark-treated Green-gram”
e2“The high C/F ratio should be largely responsible for the low RGR observed in the initial few days following the dark-period”
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