Abstract
In the present study, we evaluated the ability of yield based and physiological parameters for identification of drought tolerant bread wheat genotypes. The experiment was conducted in a randomized completely block design (RCBD) with three replications under two different rainfed and irrigated conditions. The results of analysis of variance exhibited significant differences between the genotypes for grain yield (GY), cell membrane stability (CMS), proline concentration (PC), relative water content (RWC), chlorophyll fluorescence (CHF), stomatal conductance (SC), relative chlorophyll content (RCC) , excised leaf water retention (ELWR) and relative water loss (RWL) indicating the presence of genetic variation and possible screening of drought tolerant genotypes. Significant correlation was found between multiple selection index (MSI) and stress tolerance index (STI). Screening drought tolerant genotypes by physiological indicators of drought tolerance using mean rank, standard deviation of ranks and biplot analysis, discriminated genotypes (18), (15), (10), (5) and (2) as the most drought tolerant. Therefore they are recommended to be used as parents for genetic analysis, gene mapping and improvement of drought tolerance in common wheat.
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Claims 4
Claim · model-written summary
Genotypes differed significantly in grain yield and eight physiological traits.
- Taxon
- bread wheat
Triticum aestivumt0 - Material
- genotypese0
- Outcome
- grain yield (GY), cell membrane stability (CMS), proline concentration (PC)e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“significant differences between the genotypes for grain yield (GY), cell membrane stability (CMS), proline concentration (PC), relative water content (RWC), chlorophyll fluorescence (CHF), stomatal conductance (SC), relative chlorophyll content (RCC) , excised leaf water retention (ELWR) and relative water loss (RWL)”
t0“bread wheat”
Claim · model-written summary
Multiple selection index correlated significantly with stress tolerance index.
- Taxon
- bread wheatTriticum aestivumt0
- Outcome
- multiple selection index (MSI)e0
- Comparator
- stress tolerance index (STI)e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Significant correlation was found between multiple selection index (MSI) and stress tolerance index (STI)”
t0“bread wheat”
Claim · model-written summary
Physiological screening identified genotypes 18, 15, 10, 5 and 2 as most drought tolerant.
- Taxon
- bread wheatTriticum aestivumt0
- Material
- genotypese0
- Outcome
- most drought tolerante0
- Value
- genotypes (18), (15), (10), (5) and (2)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Screening drought tolerant genotypes by physiological indicators of drought tolerance using mean rank, standard deviation of ranks and biplot analysis, discriminated genotypes (18), (15), (10), (5) and (2) as the most drought tolerant”
t0“bread wheat”
Claim · model-written summary
Authors recommend the identified genotypes as parents for wheat drought tolerance improvement and genetic analysis.
- Taxon
- common wheatTriticum aestivume0
- Outcome
- parents for genetic analysis, gene mapping and improvement of drought tolerancee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“they are recommended to be used as parents for genetic analysis, gene mapping and improvement of drought tolerance in common wheat”