Abstract
Abstract. The objective of this study was to investigate the effects of water stress in sweet potato ( Ipomoea batatas L. [Lam] ‘Georgia Jet’) on biomass production and plant‐water relationships in an enriched CO 2 atmosphere. Plants were grown in pots containing sandy loam soil (Typic Paleudult) at two concentrations of elevated CO 2 and two water regimes in open‐top field chambers. During the first 12 d of water stress, leaf xylem potentials were higher in plants grown in a CO 2 concentration of 438 and 666 μmol mol −1 than in plants grown at 364 μmol mol −1 . The 364 μmol mol −1 CO 2 grown plants had to be rewatered 2 d earlier than the high CO 2 ‐grown plants in response to water stress. For plants grown under water stress, the yield of storage roots and root: shoot ratio were greater at high CO 2 than at 364 μmol mol −1 ; the increase, however, was not linear with increasing CO 2 concentrations. In well‐watered plants, biomass production and storage root yield increased at elevated CO 2 , and these were greater as compared to water‐stressed plants grown at the same CO 2 concentration.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. 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 5
Claim · model-written summary
Leaf xylem potentials during the first 12 days of water stress were higher at 438 and 666 μmol mol −1 CO2 than at 364 μmol mol −1 CO2.
- Taxon
- sweet potato
_Flower.jpg?width=60)
Ipomoea batatast0 - Treatment
- a CO 2 concentration of 438 and 666 μmol mol −1e1
- Outcome
- leaf xylem potentialse1
- Direction
- highere1
- Qualifier
- During the first 12 d of water stresse1
- Comparator
- plants grown at 364 μmol mol −1e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Flower.jpg?width=500)
Verbatim
t0“in sweet potato grown”
e1“During the first 12 d of water stress, leaf xylem potentials were higher in plants grown in a CO 2 concentration of 438 and 666 μmol mol −1 than in plants grown at 364 μmol mol −1”
Claim · model-written summary
Plants at 364 μmol mol −1 CO2 had to be rewatered 2 days earlier than plants at high CO2 under water stress.
- Taxon
- sweet potatoIpomoea batatast0
- Treatment
- 364 μmol mol −1 CO 2e2
- Outcome
- rewaterede2
- Direction
- earliere2
- Value
- 2 de2
- Comparator
- high CO 2e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“in sweet potato grown”
e2“The 364 μmol mol −1 CO 2 grown plants had to be rewatered 2 d earlier than the high CO 2”
Claim · model-written summary
Under water stress, storage root yield and root:shoot ratio were greater at high CO2 than at 364 μmol mol −1, with a non-linear increase.
- Taxon
- sweet potatoIpomoea batatast0
- Treatment
- high CO 2e3
- Outcome
- yield of storage roots and root: shoot ratioe3
- Direction
- greatere3
- Qualifier
- the increase, however, was not linear with increasing CO 2 concentrationse3
- Comparator
- 364 μmol mol −1e3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“in sweet potato grown”
e3“For plants grown under water stress, the yield of storage roots and root: shoot ratio were greater at high CO 2 than at 364 μmol mol −1 ; the increase, however, was not linear with increasing CO 2 concentrations”
Claim · model-written summary
In well-watered plants, biomass production and storage root yield increased at elevated CO2.
- Taxon
- sweet potatoIpomoea batatast0
- Treatment
- elevated CO 2e4
- Outcome
- biomass production and storage root yielde4
- Direction
- increasede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“in sweet potato grown”
e4“biomass production and storage root yield increased at elevated CO 2”
Claim · model-written summary
In well-watered plants, biomass production and storage root yield were greater than in water-stressed plants at the same CO2 concentration.
- Taxon
- sweet potatoIpomoea batatast0
- Treatment
- water stresse3
- Outcome
- biomass production and storage root yielde4
- Direction
- greatere5
- Comparator
- water‐stressed plantse5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“in sweet potato grown”
e3“For plants grown under water stress, the yield of storage roots and root: shoot ratio were greater at high CO 2 than at 364 μmol mol −1 ; the increase, however, was not linear with increasing CO 2 concentrations”
e4“biomass production and storage root yield increased at elevated CO 2”
e5“these were greater as compared to water‐stressed plants grown at the same CO 2 concentration”
The same questions in other papers
drought · yield · Ipomoea batatas (sweet potato)Positive and negative results
3 papers in the same direction as this paper · 9 in the opposite direction
- negative
- negative
- negative
9 papers more in this group
See all 13 papers →co2 · yield · Ipomoea batatas (sweet potato)Results agree
4 papers in the same direction as this paper
- positive
- positive
- positive
1 paper more in this group
See all 5 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.