Abstract
Four varieties of grape namely Flame Seedless, Thompson Seedless, Sharad Seedless and Tas-A-Ganesh were subjected to different levels of moisture stress to study their physiological response. Stress was imposed for 14 days by withholding irrigation. Observations on relative water content, leaf water potential, leaf osmotic potential and gas exchange parameters like photosynthetic rate, transpiration rate, stomatal conductance and water use efficiency (WUE) were recorded. None of the varieties could survive for 14 days without irrigation (100% stress). Flame Seedless and Thompson Seedless at 50% moisture stress maintained higher turgidity as indicated by lesser reduction in relative water content and water potential attributed to better osmotic adjustment. Marginal reduction in photosynthesis and greater reduction in transpiration rate in the variety Flame Seedless may have resulted in higher WUE under moisture stress. Higher photosynthetic rate, lower transpiration rate, higher water relation parameters and high WUE in Flame Seedless under soil moisture stress indicated its better tolerance to drought.
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Claims 7
Claim · model-written summary
No tested grape variety survived 14 days without irrigation.
- Taxon
- grapee1
- Material
- varietiese0
- Treatment
- without irrigation (100% stress)e0
- Outcome
- survive for 14 dayse0
Not reportedComparatorDirection
Verbatim
e0“None of the varieties could survive for 14 days without irrigation (100% stress)”
e1“varieties of grape”
Claim · model-written summary
Flame Seedless and Thompson Seedless retained greater turgidity at 50% moisture stress.
Verbatim
e0“Flame Seedless and Thompson Seedless at 50% moisture stress maintained higher turgidity as indicated by lesser reduction in relative water content and water potential attributed to better osmotic adjustment”
e1“varieties of grape”
Claim · model-written summary
Flame Seedless and Thompson Seedless had less reduction in relative water content under 50% stress.
Verbatim
e0“Flame Seedless and Thompson Seedless at 50% moisture stress maintained higher turgidity as indicated by lesser reduction in relative water content and water potential attributed to better osmotic adjustment”
e1“varieties of grape”
Claim · model-written summary
Flame Seedless showed only marginal photosynthesis reduction under moisture stress.
Verbatim
e0“Marginal reduction in photosynthesis and greater reduction in transpiration rate in the variety Flame Seedless may have resulted in higher WUE under moisture stress”
e1“varieties of grape”
Claim · model-written summary
Flame Seedless showed a greater reduction in transpiration under moisture stress.
Verbatim
e0“Marginal reduction in photosynthesis and greater reduction in transpiration rate in the variety Flame Seedless may have resulted in higher WUE under moisture stress”
e1“varieties of grape”
Claim · model-written summary
Flame Seedless had higher water use efficiency under moisture stress.
Verbatim
e0“Marginal reduction in photosynthesis and greater reduction in transpiration rate in the variety Flame Seedless may have resulted in higher WUE under moisture stress”
e1“varieties of grape”
Claim · model-written summary
Flame Seedless had better drought tolerance under soil moisture stress.
Verbatim
e0“Higher photosynthetic rate, lower transpiration rate, higher water relation parameters and high WUE in Flame Seedless under soil moisture stress indicated its better tolerance to drought”
e1“varieties of grape”
The same questions in other papers
irrigation · survival · VitisPositive and negative results
1 paper in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- negative
Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.