Abstract
This study was conducted to determine the effects of anticipated future level of CO2 on growth and dry matter partitioning of mungbean (Vigna radiata). Plants were grown from seedlings to maturity inside the open top chamber under amhient CO2 (350 +/- 25 microL L(-1)) and elevated CO2 (600 +/- 50 microL L(-1)) at Indian Agricultural Research Institute, New Delhi (India). Plants were harvested at 20, 35 and 50 days after germination. Mungbean plants grown under elevated CO2 concentration resulted in greater photosynthetic rate on a leaflet area basis and no acclimation in photosynthesis was recorded due to high CO2. Plants grown under CO, enrichmcnt were taller and attained greater leaf area along with more dry matter than ambient CO2 grown plants at all growth stages. Response to high CO, depends upon the growth stage of the plant and it was more at early growth stages compared to maturity stages. The high CO2 grown mungbean plants also exhibited increased root growth along with stem and leaves. There was a substantial increase in pod number and seed number/plant under elevated CO2 conditions. The increase in dry matter and growth of root, stem and leaves proved that CO2 enrichment of the atmosphere can stimulate photosynthetic rate which can ultimately lead to an increase in dry matter and growth.
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Claims 6
Claim · model-written summary
Elevated CO2 increased leaflet-area photosynthetic rate.
- Taxon
- Mungbean
.jpg?width=60)
Vigna radiatae0 - Organ / stage
- leaflete0
- Treatment
- elevated CO2e0
- Outcome
- photosynthetic ratee0
- Direction
- greatere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“Mungbean plants grown under elevated CO2 concentration resulted in greater photosynthetic rate on a leaflet area basis”
Claim · model-written summary
Photosynthesis showed no acclimation under high CO2.
- Taxon
- MungbeanVigna radiatae1
- Treatment
- high CO2e0
- Outcome
- no acclimation in photosynthesise0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“no acclimation in photosynthesis was recorded due to high CO2”
e1“Mungbean plants grown under elevated CO2 concentration”
Claim · model-written summary
CO2 enrichment increased plant height, leaf area and dry matter at all growth stages relative to ambient CO2.
- Taxon
- MungbeanVigna radiatae1
- Treatment
- CO, enrichmcnte0
- Outcome
- taller and attained greater leaf area along with more dry mattere0
- Direction
- greatere0
- Qualifier
- at all growth stagese0
- Comparator
- ambient CO2 grown plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plants grown under CO, enrichmcnt were taller and attained greater leaf area along with more dry matter than ambient CO2 grown plants at all growth stages”
e1“Mungbean plants grown under elevated CO2 concentration”
Claim · model-written summary
The response to high CO2 was greater at early growth stages than at maturity.
- Taxon
- MungbeanVigna radiatae1
- Organ / stage
- early growth stagese0
- Outcome
- Response to high CO,e0
- Direction
- moree0
- Comparator
- maturity stagese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Response to high CO, depends upon the growth stage of the plant and it was more at early growth stages compared to maturity stages”
e1“Mungbean plants grown under elevated CO2 concentration”
Claim · model-written summary
High CO2 increased root, stem and leaf growth.
- Taxon
- mungbeanVigna radiatae0
- Treatment
- high CO2e0
- Outcome
- root growth along with stem and leavese0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The high CO2 grown mungbean plants also exhibited increased root growth along with stem and leaves”
Claim · model-written summary
Elevated CO2 substantially increased pod number and seed number per plant.
- Taxon
- MungbeanVigna radiatae1
- Treatment
- elevated CO2 conditionse0
- Outcome
- pod number and seed number/plante0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was a substantial increase in pod number and seed number/plant under elevated CO2 conditions”
e1“Mungbean plants grown under elevated CO2 concentration”
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