Abstract
Growth, canopy and seed yield of mungbean were evaluated under water stress conditions at the Kyushu University Experimental Farm during the summer of 1992. Waterlogging, optimum moisture (control) and drought conditions constituted the treatments. The treatments were initiated before the onset of flowering. The results indicated that both the water stress (waterlogging and drought stress) treatments had significant adverse affect on the morpho-physiological characters of mungbean. Plants under waterlogging conditions were affected more in most of the characters studied. Lower leaf area production, low CGR and low NAR contributed to the low TDW of the waterlogged plants compared to the other two treatments.At final harvest, the difference between the two stress treatments was about 10%. The distribution pattern of the dry matter was more or less similar in all the treatments except for roots. Among the treatments, drought stressed roots had the highest dry matter and the waterlogged roots had the lowest. The roots of the waterlogged plants became fibrous. There were distinct variations in the canopy structures under different treatment conditions. Most of the foliage for plants under control and waterlogged conditions were distributed in between upper and middle strata of the canopy, while for drought stress it was from middle to lower strata. There was increase in stem dry weight with decrease in height from the top regardless of the treatments.Th maximum value for light extinction coefficient (0.82) was in the waterlogged plants. Significantly high seed yield (7.06 g per plant) was obtained in control treatment followed by drought stress (4.21 g) and waterlogging (2.30 g). Seeds per plant and pods per plant contributed more to the seed yield per plant than the other yield contributing components. It is evident from this study that mungbeangrowth, canopy and seed yield are more susceptible to waterlogging than drought stress.
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Claims 18
Claim · model-written summary
Waterlogging significantly harmed mungbean morphophysiological characters
- Taxon
- mungbean
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Vigna radiatae0 - Treatment
- waterlogginge0
- Outcome
- morpho-physiological characterse0
- Direction
- adversee0
- Comparator
- optimum moisture (control)e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“both the water stress (waterlogging and drought stress) treatments had significant adverse affect on the morpho-physiological characters of mungbean”
e1“optimum moisture (control)”
Claim · model-written summary
Drought significantly harmed mungbean morphophysiological characters
- Taxon
- mungbeanVigna radiatae0
- Treatment
- drought stresse0
- Outcome
- morpho-physiological characterse0
- Direction
- adversee0
- Comparator
- optimum moisture (control)e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“both the water stress (waterlogging and drought stress) treatments had significant adverse affect on the morpho-physiological characters of mungbean”
e1“optimum moisture (control)”
Claim · model-written summary
Waterlogging affected most measured characters more than drought
- Taxon
- MungbeanVigna radiatat0
- Treatment
- waterlogging conditionse0
- Outcome
- most of the characters studiede0
- Direction
- moree0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plants under waterlogging conditions were affected more in most of the characters studied”
t0“Mungbean”
Claim · model-written summary
Waterlogged plants had lower leaf area production, CGR, NAR and TDW than other treatments
- Taxon
- MungbeanVigna radiatat0
- Treatment
- waterloggede0
- Outcome
- leaf area production, low CGR and low NARe0
- Direction
- Lowere0
- Comparator
- other two treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lower leaf area production, low CGR and low NAR contributed to the low TDW of the waterlogged plants compared to the other two treatments”
t0“Mungbean”
Claim · model-written summary
At final harvest, the two stress treatments differed by about 10%
- Taxon
- MungbeanVigna radiatat0
- Outcome
- difference between the two stress treatmentse0
- Value
- about 10%e0
- Comparator
- two stress treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At final harvest, the difference between the two stress treatments was about 10%”
t0“Mungbean”
Claim · model-written summary
Dry matter distribution was similar among treatments except for roots
- Taxon
- MungbeanVigna radiatat0
- Organ / stage
- rootse0
- Outcome
- distribution pattern of the dry mattere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The distribution pattern of the dry matter was more or less similar in all the treatments except for roots”
t0“Mungbean”
Claim · model-written summary
Drought-stressed roots had the highest dry matter
- Taxon
- MungbeanVigna radiatat0
- Organ / stage
- rootse0
- Treatment
- drought stressede0
- Outcome
- dry mattere0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“drought stressed roots had the highest dry matter”
t0“Mungbean”
Claim · model-written summary
Waterlogged roots had the lowest dry matter
- Taxon
- MungbeanVigna radiatat0
- Organ / stage
- rootse0
- Treatment
- waterloggede0
- Outcome
- dry mattere1
- Direction
- loweste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the waterlogged roots had the lowest”
e1“drought stressed roots had the highest dry matter”
t0“Mungbean”
Claim · model-written summary
Roots of waterlogged mungbean became fibrous
- Taxon
- MungbeanVigna radiatat0
- Organ / stage
- rootse0
- Outcome
- became fibrouse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The roots of the waterlogged plants became fibrous”
t0“Mungbean”
Claim · model-written summary
Canopy structures varied distinctly by treatment
- Taxon
- MungbeanVigna radiatat0
- Outcome
- distinct variations in the canopy structurese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There were distinct variations in the canopy structures under different treatment conditions”
t0“Mungbean”
Claim · model-written summary
Control and waterlogged foliage was concentrated in upper and middle canopy strata
- Taxon
- MungbeanVigna radiatat0
- Outcome
- foliage for plants under control and waterlogged conditions were distributed in between upper and middle strata of the canopye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Most of the foliage for plants under control and waterlogged conditions were distributed in between upper and middle strata of the canopy”
t0“Mungbean”
Claim · model-written summary
Drought-stressed foliage was concentrated in middle and lower strata
- Taxon
- MungbeanVigna radiatat0
- Treatment
- drought stresse0
- Outcome
- middle to lower stratae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“for drought stress it was from middle to lower strata”
e1“Most of the foliage for plants under control and waterlogged conditions were distributed in between upper and middle strata of the canopy”
t0“Mungbean”
Claim · model-written summary
Stem dry weight rose with distance from the canopy top across treatments
- Taxon
- MungbeanVigna radiatat0
- Outcome
- stem dry weighte0
- Direction
- increasee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was increase in stem dry weight with decrease in height from the top regardless of the treatments”
t0“Mungbean”
Claim · model-written summary
Waterlogged plants had the maximum light extinction coefficient of 0.82
- Taxon
- MungbeanVigna radiatat0
- Treatment
- waterloggede0
- Outcome
- light extinction coefficiente0
- Direction
- maximume0
- Value
- 0.82e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“maximum value for light extinction coefficient (0.82) was in the waterlogged plants”
t0“Mungbean”
Claim · model-written summary
Control plants yielded 7.06 g seed per plant, significantly more than stressed plants
- Taxon
- MungbeanVigna radiatat0
- Treatment
- control treatmente0
- Outcome
- seed yielde0
- Direction
- highe0
- Value
- 7.06 g per plante0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Significantly high seed yield (7.06 g per plant) was obtained in control treatment followed by drought stress (4.21 g) and waterlogging (2.30 g)”
t0“Mungbean”
Claim · model-written summary
Drought-stressed plants yielded 4.21 g seed per plant
- Taxon
- MungbeanVigna radiatat0
- Treatment
- drought stresse0
- Outcome
- seed yielde0
- Direction
- lowerinferrede0
- Value
- 4.21 ge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seed yield (7.06 g per plant) was obtained in control treatment followed by drought stress (4.21 g) and waterlogging (2.30 g)”
t0“Mungbean”
Claim · model-written summary
Waterlogged plants yielded 2.30 g seed per plant
- Taxon
- MungbeanVigna radiatat0
- Treatment
- waterlogginge0
- Outcome
- seed yielde0
- Direction
- lowerinferrede0
- Value
- 2.30 ge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seed yield (7.06 g per plant) was obtained in control treatment followed by drought stress (4.21 g) and waterlogging (2.30 g)”
t0“Mungbean”
Claim · model-written summary
Seeds per plant and pods per plant contributed more to seed yield than other components
- Taxon
- MungbeanVigna radiatat0
- Outcome
- seed yield per plante0
- Direction
- moree0
- Comparator
- other yield contributing componentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seeds per plant and pods per plant contributed more to the seed yield per plant than the other yield contributing components”
t0“Mungbean”