Abstract
The study evaluated the response of two Bambara groundnut (Vigna subterranea L. Verdc.) landraces sourced from contrasting environments to periods of water deficit initiated at vegetative stage. The two landraces AHM-753 and Bogor, from Namibia and Indonesia, respectively, were grown in pots and irrigation was withheld 30 days after sowing in stressed group while the control plants were fully watered. The responses were studied by measurements of relative water content (RWC), photosynthetic gas exchange, and SPAD chlorophyll. RWCand gas exchange parameters were found to decrease in stressed plants. Significant (P<0.001) decrease in SPAD chlorophyll concentration was seen only in Bogor landrace. The results showed a possible drought avoidance strategy in Bambara groundnut in response to water deficit. The results pointed a greater tolerance to the imposed drought in the landrace AHM-753 compared to Bogor suggesting that the origin of the landrace and the environment it is adapted to determine its response to water deficit.Keywords:Bambara groundnut;Chlorophyll; Gas exchange; Photosynthesis, Water deficit
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Claims 3
Claim · model-written summary
Water deficit decreased relative water content and gas exchange in stressed Bambara groundnut.
- Taxon
- Bambara groundnut
Vigna subterraneat0 - Treatment
- irrigation was withheld 30 days after sowinge1
- Outcome
- RWCand gas exchange parameterse0
- Direction
- decreasee0
- Comparator
- control plants were fully waterede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“RWCand gas exchange parameters were found to decrease in stressed plants”
e1“irrigation was withheld 30 days after sowing in stressed group while the control plants were fully watered”
t0“Bambara groundnut”
Claim · model-written summary
Water deficit significantly decreased SPAD chlorophyll in Bogor.
- Taxon
- Bambara groundnutVigna subterraneat0
- Material
- Bogore0
- Treatment
- irrigation was withheld 30 days after sowinge1
- Outcome
- SPAD chlorophyll concentratione0
- Direction
- decreasee0
- Comparator
- control plants were fully waterede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Significant (P<0.001) decrease in SPAD chlorophyll concentration was seen only in Bogor landrace”
e1“irrigation was withheld 30 days after sowing in stressed group while the control plants were fully watered”
t0“Bambara groundnut”
Claim · model-written summary
AHM-753 was more tolerant of imposed drought than Bogor.
- Taxon
- Bambara groundnutVigna subterraneat0
- Material
- AHM-753e0
- Outcome
- tolerance to the imposed droughte0
- Direction
- greatere0
- Comparator
- Bogore0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“greater tolerance to the imposed drought in the landrace AHM-753 compared to Bogor”
t0“Bambara groundnut”