Abstract
Growth and yield responses of castor bean (Ricinus communis L.) to two elevated CO2 levels (550 and 700 ppm) were evaluated up to the maturity of first order spikes in open top chambers (OTCs). The growth characteristics - root and shoot lengths, root volume, root:shoot ratios, leaf area, dry weights of different plant parts, leaf area duration and crop growth rate increased with 550 and 700 ppm of CO2 levels compared with ambient control. The spike length, pod and seed yield of first order spikes increased under enhanced CO2 levels over ambient control. Elevated CO2 levels significantly increased the total biomass and yield of castor bean, however enhanced CO2 levels per se did not changed the content and quality of the castor oil. A positive response of castor bean to increased CO2 concentrations is a good indication for its future existence in potentially changed climatic conditions.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by-nc. Read at the source ↗
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 7
Claim · model-written summary
Elevated CO2 at 550 and 700 ppm increased castor bean root and shoot lengths, root volume, and root:shoot ratios over ambient control.
- Taxon
- castor bean
Ricinus communist0 - Treatment
- 550 and 700 ppm of CO2 levelse0
- Outcome
- root and shoot lengths, root volume, root:shoot ratiose0
- Direction
- increasede0
- Comparator
- ambient controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“castor bean (Ricinus communis L.)”
e0“root and shoot lengths, root volume, root:shoot ratios, leaf area, dry weights of different plant parts, leaf area duration and crop growth rate increased with 550 and 700 ppm of CO2 levels compared with ambient control”
Claim · model-written summary
Elevated CO2 increased castor bean leaf area, plant part dry weights, and leaf area duration.
- Taxon
- castor beanRicinus communist0
- Treatment
- 550 and 700 ppm of CO2 levelse0
- Outcome
- leaf area, dry weights of different plant parts, leaf area duratione0
- Direction
- increasede0
- Comparator
- ambient controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“castor bean (Ricinus communis L.)”
e0“leaf area, dry weights of different plant parts, leaf area duration and crop growth rate increased with 550 and 700 ppm of CO2 levels compared with ambient control”
Claim · model-written summary
Elevated CO2 increased castor bean crop growth rate.
- Taxon
- castor beanRicinus communist0
- Treatment
- 550 and 700 ppm of CO2 levelse0
- Outcome
- crop growth ratee0
- Direction
- increasede0
- Comparator
- ambient controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“castor bean (Ricinus communis L.)”
e0“crop growth rate increased with 550 and 700 ppm of CO2 levels compared with ambient control”
Claim · model-written summary
Elevated CO2 increased first order spike length and pod and seed yield.
- Taxon
- castor beanRicinus communist0
- Treatment
- enhanced CO2 levelse0
- Outcome
- spike length, pod and seed yield of first order spikese0
- Direction
- increasede0
- Comparator
- ambient controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“castor bean (Ricinus communis L.)”
e0“The spike length, pod and seed yield of first order spikes increased under enhanced CO2 levels over ambient control”
Claim · model-written summary
Elevated CO2 significantly increased total biomass of castor bean.
- Taxon
- castor beanRicinus communise0
- Treatment
- Elevated CO2 levelse0
- Outcome
- total biomasse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Elevated CO2 levels significantly increased the total biomass and yield of castor bean”
Claim · model-written summary
Elevated CO2 significantly increased yield of castor bean.
- Taxon
- castor beanRicinus communise0
- Treatment
- Elevated CO2 levelse0
- Outcome
- yield of castor beane0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Elevated CO2 levels significantly increased the total biomass and yield of castor bean”
Claim · model-written summary
Elevated CO2 did not change castor oil content or quality.
- Taxon
- castor beanRicinus communist0
- Treatment
- enhanced CO2 levelse0
- Outcome
- content and quality of the castor oile0
- Direction
- did not changede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“castor bean (Ricinus communis L.)”
e0“enhanced CO2 levels per se did not changed the content and quality of the castor oil”
The same questions in other papers
co2 · growth · Ricinus communis (castor bean)Results agree
1 paper in the same direction as this paper
- positive
co2 · yield · Ricinus communis (castor bean)Results agree
1 paper in the same direction as this paper
- 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.