Abstract
Studies were conducted in green house to select suitable salt tolerant wheat genotypes on the basis of growth performance and carbon isotopes discrimination (CID) technique. Nine newly developed double haploids (DH) wheat genotypes were tested under gravel culture, along with salt tolerant (LU-26s) and high yielding (Sarsabz) checks. The crop was irrigated by non-saline (control) and saline (12dS/m) water and raised up to maturity, growth parameters (i.e. plant height, plant biomass, productive tillers, spike length, number of spiklets/spike, number of grains / spike, grain weight/ spike and grain yield/ 15 plants) were recorded after harvesting. Plant samples (straw) were collected and were analyzed for carbon isotopic ratio (C/ C) from IAEA laboratories Vienna Austria. The data showed that there was significant decrease in all the growth parameters due to salinity. On the basis of performance in different growth parameters it was found that wheat genotypes V3-DH, V9-DH, V10-DH, V13-DH, and LU-26s had good response at 12dSm, thus can be categorized as better performing genotypes. Studies on carbon isotopes discrimination (CID) showed a decreasing trend under salinity. Mean CID values were 20.86 and 17.49‰ under two environments (non saline and saline, respectively), showing an overall 19% decrease under salinity. Generally the wheat genotypes having higher grain yield also had high carbon isotopes discrimination (CID). The relationship between grain yield and CID (∆) was positive (R = 0.695). The genotypes V10-DH, V13-DH with lower decrease in CID (i.e. 1.2 & 11.0%, respectively), also had high grain yield under salinity. Therefore the studies suggest that we can include CID technique as one of the selection criteria for salt tolerance.
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Claims 8
Claim · model-written summary
Salinity significantly decreased all measured growth parameters of the wheat genotypes.
- Taxon
- wheat
Triticum aestivumt0 - Treatment
- saline (12dS/m) watere1
- Outcome
- growth parameterse0
- Direction
- decreasee0
- Comparator
- non-saline (control)e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“wheat”
e0“there was significant decrease in all the growth parameters due to salinity”
e1“irrigated by non-saline (control) and saline (12dS/m) water”
Claim · model-written summary
Carbon isotope discrimination in wheat decreased under salinity, from 20.86 to 17.49‰, an overall 19% decrease.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- salinitye0
- Outcome
- CIDe0
- Direction
- decreasee0
- Value
- 19%e0
- Qualifier
- 20.86 and 17.49‰e0
- Comparator
- non salinee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“wheat”
e0“Mean CID values were 20.86 and 17.49‰ under two environments (non saline and saline, respectively), showing an overall 19% decrease under salinity”
Claim · model-written summary
Wheat genotypes V3-DH, V9-DH, V10-DH, V13-DH and LU-26s responded well in growth parameters at 12 dS/m salinity and were categorised as better performing.
- Taxon
- wheatTriticum aestivumt0
- Material
- V3-DH, V9-DH, V10-DH, V13-DH, and LU-26se0
- Treatment
- 12dSme0
- Outcome
- good responsee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“wheat”
e0“wheat genotypes V3-DH, V9-DH, V10-DH, V13-DH, and LU-26s had good response at 12dSm”
Claim · model-written summary
Wheat genotypes with higher grain yield generally also had high carbon isotope discrimination.
- Taxon
- wheatTriticum aestivumt0
- Material
- wheat genotypes having higher grain yielde0
- Outcome
- carbon isotopes discrimination (CID)e0
- Direction
- highe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“wheat”
e0“Generally the wheat genotypes having higher grain yield also had high carbon isotopes discrimination (CID)”
Claim · model-written summary
Grain yield and CID were positively related in wheat (R = 0.695).
- Taxon
- wheatTriticum aestivumt0
- Outcome
- grain yielde0
- Direction
- positivee0
- Value
- R = 0.695e0
- Comparator
- CID (∆)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“wheat”
e0“The relationship between grain yield and CID (∆) was positive (R = 0.695)”
Claim · model-written summary
Genotype V10-DH had a lower decrease in CID (1.2%) and also high grain yield under salinity.
- Taxon
- wheatTriticum aestivumt0
- Material
- V10-DHe0
- Treatment
- salinitye0
- Outcome
- decrease in CIDe0
- Direction
- lowere0
- Value
- 1.2e0
- Qualifier
- also had high grain yielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“wheat”
e0“The genotypes V10-DH, V13-DH with lower decrease in CID (i.e. 1.2 & 11.0%, respectively), also had high grain yield under salinity”
Claim · model-written summary
Genotype V13-DH had a lower decrease in CID (11.0%) and also high grain yield under salinity.
- Taxon
- wheatTriticum aestivumt0
- Material
- V13-DHe0
- Treatment
- salinitye0
- Outcome
- decrease in CIDe0
- Direction
- lowere0
- Value
- 11.0%e0
- Qualifier
- also had high grain yielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“wheat”
e0“The genotypes V10-DH, V13-DH with lower decrease in CID (i.e. 1.2 & 11.0%, respectively), also had high grain yield under salinity”
Claim · model-written summary
The authors suggest including the CID technique as one selection criterion for salt tolerance in wheat.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- selection criteria for salt tolerancee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“wheat”
e0“we can include CID technique as one of the selection criteria for salt tolerance”
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