Abstract
In a two-year experiment, 11 barley genotypes from ICARDA and one landrace from Iran were tested under optimum and drought stress conditions. Phenological and physiological traits such as relative water content (RWC), osmotic adjustment (OA), stay-green (SG), plant height (PLH), days to heading (DHE), days to maturity (DMA) and seed indexes such as 1000-grain weight (TGW), number of grain per spike (G/S) and grain yield (GY) were evaluated. Variations were observed in DHE, DMA, G/S, TGW, PLH, RWC, OA and length of stay-green period. DHE and DMA were the phenological traits that most influenced yield during water stress conditions. Negative correlation was observed under water stress between yield, DHE, and DMA under drought stress. The average reduction in yield caused by drought stress was 28.05%. Under drought stress condition, TGW, G/S, RWC and SG correlated positively with yield, while under both stress conditions, the correlation of yield and PLH was lower than other correlations. Yield was significantly correlated with osmotic adjustment (P < 0.05). Among the genotypes, L6 possessed the greatest OA capacity, and L3, L8, L9 and L10 the smallest. The genotypes that show higher OA capacities therefore, are those that are most drought tolerant. Genotype L6 performed well under water stress condition as it attained a reasonable plant height, precocity, RWC, OA and SG, gave higher grain yields and seed index as compared with other genotypes. Key words: Barley, drought stress, phenological and physiological traits, yield.
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Claims 15
Claim · model-written summary
Drought stress reduced barley yield by an average of 28.05%.
- Taxon
- barley
.jpg?width=60)
Hordeum vulgaret0 - Treatment
- drought stresse1
- Outcome
- yielde1
- Direction
- reductione1
- Value
- 28.05%e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e1“The average reduction in yield caused by drought stress was 28.05%”
t0“Screening of barley genotypes for drought tolerance by agro-physiological traits in field condition.”
Claim · model-written summary
Days to heading and days to maturity were the phenological traits that most influenced barley yield under water stress.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- water stress conditionse2
- Outcome
- yielde2
- Qualifier
- DHE and DMA were the phenological traits that most influencede2
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“DHE and DMA were the phenological traits that most influenced yield during water stress conditions”
t0“Screening of barley genotypes for drought tolerance by agro-physiological traits in field condition.”
Claim · model-written summary
Yield was negatively correlated with DHE and DMA under drought stress in barley.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- drought stresse3
- Outcome
- yield, DHE, and DMAe3
- Direction
- Negative correlatione3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Negative correlation was observed under water stress between yield, DHE, and DMA under drought stress”
t0“Screening of barley genotypes for drought tolerance by agro-physiological traits in field condition.”
Claim · model-written summary
Under drought stress, TGW, G/S and RWC correlated positively with barley yield.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- Under drought stress conditione4
- Outcome
- yielde4
- Direction
- correlated positivelye4
- Qualifier
- TGW, G/S, RWCe4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“Under drought stress condition, TGW, G/S, RWC and SG correlated positively with yield”
t0“Screening of barley genotypes for drought tolerance by agro-physiological traits in field condition.”
Claim · model-written summary
Under drought stress, stay-green correlated positively with barley yield.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- Under drought stress conditione4
- Outcome
- yielde4
- Direction
- correlated positivelye4
- Qualifier
- SGe4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“Under drought stress condition, TGW, G/S, RWC and SG correlated positively with yield”
t0“Screening of barley genotypes for drought tolerance by agro-physiological traits in field condition.”
Claim · model-written summary
Under both stress conditions, the correlation of yield with PLH and PLH was lower than other correlations in barley.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- both stress conditionse5
- Outcome
- yield and PLHe5
- Direction
- lowere5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“while under both stress conditions, the correlation of yield and PLH was lower than other correlations”
t0“Screening of barley genotypes for drought tolerance by agro-physiological traits in field condition.”
Claim · model-written summary
Yield was significantly correlated with osmotic adjustment in barley.
- Taxon
- barleyHordeum vulgaret0
- Outcome
- Yield was significantly correlated with osmotic adjustmente6
- Value
- P < 0.05e6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“Yield was significantly correlated with osmotic adjustment (P < 0.05)”
t0“Screening of barley genotypes for drought tolerance by agro-physiological traits in field condition.”
Claim · model-written summary
Genotype L6 had the greatest osmotic adjustment capacity among the barley genotypes.
- Taxon
- barleyHordeum vulgaret0
- Material
- L6e7
- Outcome
- OA capacitye7
- Qualifier
- the greateste7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“Among the genotypes, L6 possessed the greatest OA capacity, and L3, L8, L9 and L10 the smallest”
t0“Screening of barley genotypes for drought tolerance by agro-physiological traits in field condition.”
Claim · model-written summary
Genotypes L3, L8, L9 and L10 had the smallest osmotic adjustment capacity among the barley genotypes.
- Taxon
- barleyHordeum vulgaret0
- Material
- L3, L8, L9 and L10e7
- Outcome
- OA capacitye7
- Qualifier
- the smalleste7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“Among the genotypes, L6 possessed the greatest OA capacity, and L3, L8, L9 and L10 the smallest”
t0“Screening of barley genotypes for drought tolerance by agro-physiological traits in field condition.”
Claim · model-written summary
Genotype L6 gave higher grain yields and seed index than other genotypes under water stress.
- Taxon
- barleyHordeum vulgaret0
- Material
- L6e0
- Treatment
- water stress conditione0
- Outcome
- grain yields and seed indexe0
- Direction
- highere0
- Comparator
- other genotypese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Genotype L6 performed well under water stress condition as it attained a reasonable plant height, precocity, RWC, OA and SG, gave higher grain yields and seed index as compared with other genotypes”
t0“Screening of barley genotypes for drought tolerance by agro-physiological traits in field condition.”
Claim · model-written summary
Genotype L6 attained a reasonable plant height, precocity and RWC under water stress.
- Taxon
- barleyHordeum vulgaret0
- Material
- L6e0
- Outcome
- plant height, precocity, RWCe0
- Qualifier
- reasonablee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Genotype L6 performed well under water stress condition as it attained a reasonable plant height, precocity, RWC, OA and SG, gave higher grain yields and seed index as compared with other genotypes”
t0“Screening of barley genotypes for drought tolerance by agro-physiological traits in field condition.”
Claim · model-written summary
Genotype L6 attained a reasonable osmotic adjustment and stay-green under water stress.
- Taxon
- barleyHordeum vulgaret0
- Material
- L6e0
- Outcome
- OA and SGe0
- Qualifier
- reasonablee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Genotype L6 performed well under water stress condition as it attained a reasonable plant height, precocity, RWC, OA and SG, gave higher grain yields and seed index as compared with other genotypes”
t0“Screening of barley genotypes for drought tolerance by agro-physiological traits in field condition.”
Claim · model-written summary
Variations were observed in days to heading, days to maturity and G/S among barley genotypes.
- Taxon
- barleyHordeum vulgaret0
- Outcome
- DHE, DMA, G/Se1
- Qualifier
- Variations were observede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Variations were observed in DHE, DMA, G/S, TGW, PLH, RWC, OA and length of stay-green period”
t0“Screening of barley genotypes for drought tolerance by agro-physiological traits in field condition.”
Claim · model-written summary
Variations were observed in TGW, PLH and RWC among barley genotypes.
- Taxon
- barleyHordeum vulgaret0
- Outcome
- TGW, PLH, RWCe1
- Qualifier
- Variations were observede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Variations were observed in DHE, DMA, G/S, TGW, PLH, RWC, OA and length of stay-green period”
t0“Screening of barley genotypes for drought tolerance by agro-physiological traits in field condition.”
Claim · model-written summary
Variations were observed in osmotic adjustment and length of stay-green period among barley genotypes.
- Taxon
- barleyHordeum vulgaret0
- Outcome
- OA and length of stay-green periode1
- Qualifier
- Variations were observede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Variations were observed in DHE, DMA, G/S, TGW, PLH, RWC, OA and length of stay-green period”
t0“Screening of barley genotypes for drought tolerance by agro-physiological traits in field condition.”
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