Abstract
A pot experiment was conducted in a net house to evaluate the effects of drought stress (a 20-day water withholding treatment from 100-120 days after planting) on the growth and physiology of five sugarcane cultivars. The results showed that water stress at an early stage significantly affected sugarcane growth and physiology. Water stress resulted in reductions in plant height, stalk diameter, and leaf number of sugarcane, in addition to reductions in the photosynthetic pigment content, Fv/Fm, and SPAD (Soil Plant Analysis Development) readings after the 20-day withholding water period (120 DAP), and in stem, root, and leaf fresh weights, and leaf area at 150 DAP. Besides, drought stress led to increases in stomata density and decreases in stomata length. Variation was also found among the cultivars in response to water stress. Significant genotypic differences in stem fresh weight and leaf area under water stress among the cultivars were observed. The highest value of stem fresh weight under stressed conditions was recorded in ROC22 (50.6 g), followed by QĐ159 (46.5g), ROC16 (46.2g), ROC10 (46.1g), and VL06 (44.4g). However, the highest DTI was recorded in ROC16, followed by VL06, ROC10, QĐ93-159, and ROC22, respectively.
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Claims 13
Claim · model-written summary
Drought stress changed sugarcane plant height, stalk diameter, and leaf number.
- Taxon
- Sugarcanet0
- Treatment
- Water stresse1
- Outcome
- plant height, stalk diameter, and leaf numbere1
- Direction
- reductionse1
Not reportedComparator
Verbatim
t0“Sugarcane”
e1“Water stress resulted in reductions in plant height, stalk diameter, and leaf number of sugarcane”
Claim · model-written summary
Drought stress changed sugarcane photosynthetic pigment content, Fv/Fm, and SPAD (Soil Plant Analysis Development) readings.
- Taxon
- Sugarcanet0
- Treatment
- drought stresse2
- Outcome
- photosynthetic pigment content, Fv/Fm, and SPAD (Soil Plant Analysis Development) readingse1
- Direction
- reductionse1
Not reportedComparator
Verbatim
t0“Sugarcane”
e1“reductions in the photosynthetic pigment content, Fv/Fm, and SPAD (Soil Plant Analysis Development) readings after the 20-day withholding water period (120 DAP)”
e2“drought stress led to increases in stomata density and decreases in stomata length.”
Claim · model-written summary
Drought stress changed sugarcane stem, root, and leaf fresh weights.
- Taxon
- Sugarcanet0
- Treatment
- drought stresse2
- Outcome
- stem, root, and leaf fresh weightse1
- Direction
- decreaseinferrede1
Not reportedComparator
Verbatim
t0“Sugarcane”
e1“in stem, root, and leaf fresh weights, and leaf area at 150 DAP”
e2“drought stress led to increases in stomata density and decreases in stomata length.”
Claim · model-written summary
Drought stress changed sugarcane leaf area.
Not reportedComparator
Verbatim
t0“Sugarcane”
e1“in stem, root, and leaf fresh weights, and leaf area at 150 DAP”
e2“drought stress led to increases in stomata density and decreases in stomata length.”
Claim · model-written summary
Drought stress changed sugarcane stomata density.
Not reportedComparator
Verbatim
t0“Sugarcane”
e1“drought stress led to increases in stomata density”
Claim · model-written summary
Drought stress changed sugarcane stomata length.
Not reportedComparator
Verbatim
t0“Sugarcane”
e1“decreases in stomata length”
e2“drought stress led to increases in stomata density and decreases in stomata length.”
Claim · model-written summary
Sugarcane cultivars differed significantly in stem fresh weight and leaf area under water stress.
Not reportedDirection
Verbatim
t0“Sugarcane”
e0“Significant genotypic differences in stem fresh weight and leaf area under water stress among the cultivars were observed.”
Claim · model-written summary
ROC22 had stem fresh weight 50.6 g under stress.
Verbatim
t0“Sugarcane”
e0“The highest value of stem fresh weight under stressed conditions was recorded in ROC22 (50.6 g), followed by QĐ159 (46.5g), ROC16 (46.2g), ROC10 (46.1g), and VL06 (44.4g).”
Claim · model-written summary
QĐ159 had stem fresh weight 46.5g under stress.
Verbatim
t0“Sugarcane”
e0“The highest value of stem fresh weight under stressed conditions was recorded in ROC22 (50.6 g), followed by QĐ159 (46.5g), ROC16 (46.2g), ROC10 (46.1g), and VL06 (44.4g).”
Claim · model-written summary
ROC16 had stem fresh weight 46.2g under stress.
Verbatim
t0“Sugarcane”
e0“The highest value of stem fresh weight under stressed conditions was recorded in ROC22 (50.6 g), followed by QĐ159 (46.5g), ROC16 (46.2g), ROC10 (46.1g), and VL06 (44.4g).”
Claim · model-written summary
ROC10 had stem fresh weight 46.1g under stress.
Verbatim
t0“Sugarcane”
e0“The highest value of stem fresh weight under stressed conditions was recorded in ROC22 (50.6 g), followed by QĐ159 (46.5g), ROC16 (46.2g), ROC10 (46.1g), and VL06 (44.4g).”
Claim · model-written summary
VL06 had stem fresh weight 44.4g under stress.
Verbatim
t0“Sugarcane”
e0“The highest value of stem fresh weight under stressed conditions was recorded in ROC22 (50.6 g), followed by QĐ159 (46.5g), ROC16 (46.2g), ROC10 (46.1g), and VL06 (44.4g).”
Claim · model-written summary
ROC16 had the highest DTI among the tested cultivars.
Verbatim
t0“Sugarcane”
e0“the highest DTI was recorded in ROC16, followed by VL06, ROC10, QĐ93-159, and ROC22, respectively.”
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