Abstract
Limited water availability is one of the important abiotic factor affecting yield of wheat crop. Exogenous application of osmolytes is an important factor in reducing the stress due to water shortage. Keeping in view the role of proline and L-tryptophan (L-TRP) in stress alleviation, a study was carried out at the agricultural research area of the University College of Agriculture and Environmental Sciences, The Islamia University of Bahawalpur, Pakistan, during winter 2015-2016 to evaluate the impact of foliar applied proline and L-TRP on growth and photosynthetic efficiency of wheat grown under limited moisture supply. Drought stress was applied in three levels (I1 = control, I2 = drought stress at tillering stage and I3 = drought stress at grain filling stage) while, foliar application of proline and L-TRP was done in six levels [T1 = control; T2 = proline (10 mM); T3 = proline (20 mM); T4 = L-TRP (10-4 M); T5 = L-TRP (10-4 M) + proline (10 mM) and T6 = L-TRP (10-4 M) + proline (20 mM)]. The experimental results revealed that growth and photosynthetic efficiency of wheat were decreased due to reduced water supply. However, exogenously applied proline and L-TRP considerably ameliorated the effect of drought stress. Combined application of L-TRP (10-4 M) and proline (20 mM ) showed better results and induced tolerance to drought stress, in comparison with other treatments. Foliar application of proline and L-TRP also enhanced the photosynthetic rate which might be related with the improved photosynthetic pigments. Overall, exogenously applied proline and L-TRP mitigated the adverse effects of moisture deficit on growth and photosynthetic efficiency of wheat crop.
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Claims 8
Claim · model-written summary
Reduced water supply decreased wheat growth.
- Taxon
- wheat
Triticum aestivume0 - Treatment
- reduced water supplye0
- Outcome
- growthe0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“growth and photosynthetic efficiency of wheat were decreased due to reduced water supply”
Claim · model-written summary
Reduced water supply decreased wheat photosynthetic efficiency.
- Taxon
- wheatTriticum aestivume0
- Treatment
- reduced water supplye0
- Outcome
- photosynthetic efficiencye0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“growth and photosynthetic efficiency of wheat were decreased due to reduced water supply”
Claim · model-written summary
Foliar proline ameliorated drought effects on wheat.
- Taxon
- wheatTriticum aestivume1
- Treatment
- prolinee0
- Outcome
- effect of drought stresse0
- Direction
- amelioratede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“exogenously applied proline and L-TRP considerably ameliorated the effect of drought stress”
e1“growth and photosynthetic efficiency of wheat were decreased due to reduced water supply”
Claim · model-written summary
Foliar L-TRP ameliorated drought effects on wheat.
- Taxon
- wheatTriticum aestivume1
- Treatment
- L-TRPe0
- Outcome
- effect of drought stresse0
- Direction
- amelioratede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“exogenously applied proline and L-TRP considerably ameliorated the effect of drought stress”
e1“growth and photosynthetic efficiency of wheat were decreased due to reduced water supply”
Claim · model-written summary
Combined L-TRP and proline at the stated doses performed better than other treatments and induced drought tolerance.
- Taxon
- wheatTriticum aestivume1
- Treatment
- Combined application of L-TRP (10-4 M) and proline (20 mM )e0
- Outcome
- tolerance to drought stresse0
- Direction
- bettere0
- Comparator
- other treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Combined application of L-TRP (10-4 M) and proline (20 mM ) showed better results and induced tolerance to drought stress, in comparison with other treatments”
e1“wheat grown under limited moisture supply”
Claim · model-written summary
Foliar proline enhanced wheat photosynthetic rate.
- Taxon
- wheatTriticum aestivume1
- Treatment
- prolinee0
- Outcome
- photosynthetic ratee0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Foliar application of proline and L-TRP also enhanced the photosynthetic rate”
e1“growth and photosynthetic efficiency of wheat were decreased due to reduced water supply”
Claim · model-written summary
Foliar L-TRP enhanced wheat photosynthetic rate.
- Taxon
- wheatTriticum aestivume1
- Treatment
- L-TRPe0
- Outcome
- photosynthetic ratee0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Foliar application of proline and L-TRP also enhanced the photosynthetic rate”
e1“growth and photosynthetic efficiency of wheat were decreased due to reduced water supply”
Claim · model-written summary
The authors suggest the higher photosynthetic rate may relate to improved photosynthetic pigments.
- Taxon
- wheatTriticum aestivume1
- Outcome
- photosynthetic ratee0
- Qualifier
- improved photosynthetic pigmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“enhanced the photosynthetic rate which might be related with the improved photosynthetic pigments”
e1“growth and photosynthetic efficiency of wheat were decreased due to reduced water supply”
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