Abstract
A study was conducted to screen twenty nine sunflower genotypes for tolerance to drought under field conditions based on morpho - physiological characteristics. Moisture stress treatment was imposed at flower bud initiation stage (irrigation withheld for 20 days from 40 DAS to 60 DAS) where as, control plots were irrigated at 10 days intervals throughout the crop growth period. Results revealed that water stress showed repressing effect on plant height, total leaf area, SPAD chlorphyll meter reading, chlorophyll fluorescence (Fv/Fm), total dry matter weight at harvest, capitulum diameter per plant, capitulum weight per plant, seed yield per plant, drought susceptibility index and harvest index. However, genotypic variation was significant for characters studied. Based on drought susceptibility index and various morpho- physiological traits, eight genotypes viz., TSF-103, RSF-107, TSF-106, ASF-104, DSF-104, SH- 491, RSF-106 and DSF-111 were selected as promising lines under water limited situation. These lines may further be used in stress physiology studies and drought resistance breeding.
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Claims 8
Claim · model-written summary
Water stress depressed sunflower height and leaf area.
- Taxon
- Sunflower
Helianthus annuust0 - Treatment
- water stresse0
- Outcome
- plant height, total leaf areae0
- Direction
- repressinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“water stress showed repressing effect on plant height, total leaf area, SPAD chlorphyll meter reading, chlorophyll fluorescence (Fv/Fm), total dry matter weight at harvest”
t0“Sunflower”
Claim · model-written summary
Water stress depressed SPAD chlorophyll readings and chlorophyll fluorescence.
- Taxon
- SunflowerHelianthus annuust0
- Treatment
- water stresse0
- Outcome
- SPAD chlorphyll meter reading, chlorophyll fluorescence (Fv/Fm)e0
- Direction
- repressinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“water stress showed repressing effect on plant height, total leaf area, SPAD chlorphyll meter reading, chlorophyll fluorescence (Fv/Fm), total dry matter weight at harvest”
t0“Sunflower”
Claim · model-written summary
Water stress depressed total dry matter weight at harvest.
- Taxon
- SunflowerHelianthus annuust0
- Treatment
- water stresse0
- Outcome
- total dry matter weight at harveste0
- Direction
- repressinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“water stress showed repressing effect on plant height, total leaf area, SPAD chlorphyll meter reading, chlorophyll fluorescence (Fv/Fm), total dry matter weight at harvest”
t0“Sunflower”
Claim · model-written summary
Water stress depressed capitulum diameter, capitulum weight and seed yield per plant.
- Taxon
- SunflowerHelianthus annuust0
- Treatment
- water stresse1
- Outcome
- capitulum diameter per plant, capitulum weight per plant, seed yield per plante0
- Direction
- repressinge1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“capitulum diameter per plant, capitulum weight per plant, seed yield per plant, drought susceptibility index and harvest index”
e1“water stress showed repressing effect”
t0“Sunflower”
Claim · model-written summary
Water stress depressed drought susceptibility index and harvest index.
- Taxon
- SunflowerHelianthus annuust0
- Treatment
- water stresse1
- Outcome
- drought susceptibility index and harvest indexe0
- Direction
- repressinge1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“drought susceptibility index and harvest index”
e1“water stress showed repressing effect”
t0“Sunflower”
Claim · model-written summary
Genotypes differed significantly in the characters studied.
- Taxon
- SunflowerHelianthus annuust0
- Outcome
- genotypic variatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“genotypic variation was significant for characters studied”
t0“Sunflower”
Claim · model-written summary
Eight sunflower genotypes were selected as promising under limited water.
- Taxon
- SunflowerHelianthus annuust0
- Material
- TSF-103, RSF-107, TSF-106, ASF-104, DSF-104, SH- 491, RSF-106 and DSF-111e0
- Outcome
- promising lines under water limited situatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“eight genotypes viz., TSF-103, RSF-107, TSF-106, ASF-104, DSF-104, SH- 491, RSF-106 and DSF-111 were selected as promising lines under water limited situation”
t0“Sunflower”
Claim · model-written summary
The selected lines may be used for stress physiology studies and drought resistance breeding.
- Taxon
- SunflowerHelianthus annuust0
- Outcome
- stress physiology studies and drought resistance breedinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These lines may further be used in stress physiology studies and drought resistance breeding.”
t0“Sunflower”
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