Abstract
Drought stress is a major challenge for sorghum production, particularly during the reproductive stage. This study investigated the effects of drought stress on sorghum genotypes, focusing on their morpho-phenological characteristics and yield parameters. A field experiment was conducted over two rabi seasons (2021-22 and 2022-23) at the University of Agricultural Science, Dharwad, India. Twenty sorghum genotypes were evaluated under both irrigated and rainfed conditions using a split-plot design with two replications. Water stress reduced sorghum plant height, with a mean height of 190.41 cm under irrigated conditions and 176.50 cm under rainfed conditions at 90 days after sowing. Water stress advanced the physiological maturity by 10 days compared to irrigated condition. Yield parameters revealed significant differences, the mean grain yield was 70.23 g/plant for irrigated conditions and 54.54 g/plant for rainfed conditions. Water stress also had an impact on harvest index, with irrigated conditions having a mean harvest index of 30.91% and rainfed conditions having a mean harvest index of 28.13%. Genotypes by overall performance Phule Anuradha, BJV 44, and M-35-1 tolerated water stress, by minimizing yield reduction by drought.
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Claims 5
Claim · model-written summary
Water stress lowered sorghum height from 190.41 cm irrigated to 176.50 cm rainfed at 90 days.
- Organ / stage
- 90 days after sowinge0
- Treatment
- Water stresse0
- Outcome
- plant heighte0
- Direction
- reducede0
- Value
- 176.50 cme0
- Qualifier
- 190.41 cme0
- Comparator
- irrigated conditionse0
SorghumOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water stress reduced sorghum plant height, with a mean height of 190.41 cm under irrigated conditions and 176.50 cm under rainfed conditions at 90 days after sowing.”
Claim · model-written summary
Water stress advanced physiological maturity by 10 days.
- Treatment
- Water stresse0
- Outcome
- physiological maturitye0
- Direction
- advancede0
- Value
- 10 dayse0
- Comparator
- irrigated conditione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water stress advanced the physiological maturity by 10 days compared to irrigated condition.”
e1“Twenty sorghum genotypes”
Claim · model-written summary
Rainfed grain yield averaged 54.54 g/plant versus 70.23 g/plant when irrigated.
- Treatment
- rainfed conditionse0
- Outcome
- mean grain yielde0
- Value
- 54.54 g/plante0
- Qualifier
- 70.23 g/plante0
- Comparator
- irrigated conditionse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the mean grain yield was 70.23 g/plant for irrigated conditions and 54.54 g/plant for rainfed conditions”
e1“Water stress reduced sorghum plant height”
Claim · model-written summary
Rainfed harvest index averaged 28.13% versus 30.91% when irrigated.
- Treatment
- rainfed conditionse0
- Outcome
- mean harvest indexe0
- Value
- 28.13%e0
- Qualifier
- 30.91%e0
- Comparator
- irrigated conditionse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“irrigated conditions having a mean harvest index of 30.91% and rainfed conditions having a mean harvest index of 28.13%”
e1“Twenty sorghum genotypes”
Claim · model-written summary
Phule Anuradha, BJV 44, and M-35-1 tolerated water stress by minimizing yield reduction.
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Phule Anuradha, BJV 44, and M-35-1 tolerated water stress, by minimizing yield reduction by drought.”
e1“Twenty sorghum genotypes”
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