Abstract
Cassava (Manihot esculenta Crantz) was grown in the field to study the effect of water deficit caused by drought on leaf and plant development, storage root growth and yield. Soil water content in the first 50 cm was monitored weekly. Leaf number per plant, leaf area index (LAI), leaf lobe length, plant and storage root dry matter accumulation were measured every two weeks. Leaf emergence, stem elongation and leaf senescence were also investigated. Water stress during drought was found to reduce leaf emergence rate (LER) and the size of the leaves emerged and expanded during the drought period. It also increased leaf senescence at the base of the canopy when LAI was > 3, leading eventually to a decreased LAI. The reduction in LAI was associated with a lower dry matter production. Storage root production was less sensitive to water stress than shoot growth since the proportion of assimilate translocated in the storage roots increased.
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Claims 7
Claim · model-written summary
Water stress during drought reduced leaf emergence rate.
- Taxon
- cassava
Manihot esculentat0 - Treatment
- Water stress during droughte0
- Outcome
- leaf emergence rate (LER)e0
- Direction
- reducee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cassava (Manihot esculenta Crantz.) plant”
e0“Water stress during drought was found to reduce leaf emergence rate (LER) and the size of the leaves emerged and expanded during the drought period”
Claim · model-written summary
Water stress during drought reduced the size of the leaves emerged and expanded.
- Taxon
- cassavaManihot esculentat0
- Treatment
- Water stress during droughte0
- Outcome
- the size of the leaves emerged and expandede0
- Direction
- reducee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cassava (Manihot esculenta Crantz.) plant”
e0“Water stress during drought was found to reduce leaf emergence rate (LER) and the size of the leaves emerged and expanded during the drought period”
Claim · model-written summary
Water stress increased leaf senescence at the base of the canopy when LAI was above 3.
- Taxon
- cassavaManihot esculentat0
- Organ / stage
- base of the canopye1
- Outcome
- leaf senescence at the base of the canopye1
- Direction
- increasede1
- Qualifier
- when LAI was > 3e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cassava (Manihot esculenta Crantz.) plant”
e1“It also increased leaf senescence at the base of the canopy when LAI was > 3, leading eventually to a decreased LAI”
Claim · model-written summary
Drought-related leaf area index decreased in cassava.
- Taxon
- cassavaManihot esculentat0
- Organ / stage
- canopye1
- Outcome
- LAIe1
- Direction
- decreasede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cassava (Manihot esculenta Crantz.) plant”
e1“It also increased leaf senescence at the base of the canopy when LAI was > 3, leading eventually to a decreased LAI”
Claim · model-written summary
Reduced LAI was associated with lower dry matter production in cassava.
- Taxon
- cassavaManihot esculentat0
- Outcome
- dry matter productione2
- Direction
- lowere2
- Qualifier
- The reduction in LAIe2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cassava (Manihot esculenta Crantz.) plant”
e2“The reduction in LAI was associated with a lower dry matter production”
Claim · model-written summary
Storage root production was less sensitive to water stress than shoot growth.
- Taxon
- cassavaManihot esculentat0
- Treatment
- water stresse3
- Outcome
- Storage root productione3
- Direction
- less sensitivee3
- Comparator
- shoot growthe3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cassava (Manihot esculenta Crantz.) plant”
e3“Storage root production was less sensitive to water stress than shoot growth since the proportion of assimilate translocated in the storage roots increased”
Claim · model-written summary
The proportion of assimilate translocated to storage roots increased under drought.
- Taxon
- cassavaManihot esculentat0
- Outcome
- proportion of assimilate translocated in the storage rootse3
- Direction
- increasede3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cassava (Manihot esculenta Crantz.) plant”
e3“Storage root production was less sensitive to water stress than shoot growth since the proportion of assimilate translocated in the storage roots increased”
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See all 25 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.