Abstract
The performance of twenty wheat genotypes under Polyethylene Glycol (PEG) induced water stress during germination and early seedling growth stages were tested under three levels of water potential i) Control (Tap water), ii) -2 bars and iii) -4 bar at the Crop Physiology and Ecology Laboratory of Hajee Mohammad Danesh Science and Technology University, Dinajpur during September 2014 to October 2014. Rate of germination and vigor index of all wheat genotypes were delayed with the increment of water stress induced by PEG. Shoot and root lengths and seedling dry weight of 10 days old seedlings were found to be reduced due to the increment of water stress. However, the degree of reduction of these parameters with the increment of water stress was not similar for all wheat genotypes. Stress tolerance index (STI) based on seedling dry weight indicated a wide difference in stress tolerance among the wheat genotypes. At moderate water deficit stress, BARI Gom 25, E 34, E 28 and BAW 1170 showed more stress tolerance and the wheat genotypes- Sourav, E 23 and BAW 1140 showed greater stress sensitivity than the other wheat genotypes. At higher water deficit stress, BARI Gom 25, BARI Gom 28, E 28 and BAW 1170 showed more stress tolerance and the wheat genotypes- Satabdi, Sourav, BARI Gom 26, E 23, E 38, E 24, BAW 1163, BAW 1140 and BAW 1151 showed greater stress sensitivity than the others. Considering both moderate and high water deficit stress, BARI Gom 25, E 28 and BAW 1170 were found as tolerant and Sourav, E 23 and BAW 1140 were found as water deficit stress sensitive wheat genotypes. The Agriculturists 2017; 15(1) 81-91
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Claims 10
Claim · model-written summary
Increasing PEG water stress delayed wheat germination rate and vigor index.
- Taxon
- Wheat
Triticum aestivumt0 - Treatment
- water stress induced by PEGe0
- Outcome
- Rate of germination and vigor indexe0
- Direction
- delayede0
- Comparator
- Control (Tap water)e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rate of germination and vigor index of all wheat genotypes were delayed with the increment of water stress induced by PEG.”
e1“Control (Tap water)”
t0“Wheat (Triticum aestivum)”
Claim · model-written summary
Increasing water stress reduced wheat shoot and root lengths and seedling dry weight.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- water stresse0
- Outcome
- Shoot and root lengths and seedling dry weighte0
- Direction
- reducede0
- Qualifier
- 10 days old seedlingse0
- Comparator
- Control (Tap water)e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Shoot and root lengths and seedling dry weight of 10 days old seedlings were found to be reduced due to the increment of water stress.”
e1“Control (Tap water)”
t0“Wheat (Triticum aestivum)”
Claim · model-written summary
The degree of seedling trait reduction differed among wheat genotypes.
- Taxon
- WheatTriticum aestivumt0
- Outcome
- degree of reduction of these parameterse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the degree of reduction of these parameters with the increment of water stress was not similar for all wheat genotypes.”
t0“Wheat (Triticum aestivum)”
Claim · model-written summary
Seedling dry weight stress tolerance index differed widely among wheat genotypes.
- Taxon
- wheatTriticum aestivume0
- Outcome
- wide difference in stress tolerancee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Stress tolerance index (STI) based on seedling dry weight indicated a wide difference in stress tolerance among the wheat genotypes.”
Claim · model-written summary
At moderate deficit, BARI Gom 25, E 34, E 28 and BAW 1170 showed greater tolerance than other wheat genotypes.
- Taxon
- WheatTriticum aestivumt0
- Material
- BARI Gom 25, E 34, E 28 and BAW 1170e0
- Treatment
- moderate water deficit stresse0
- Outcome
- stress tolerancee0
- Direction
- moree0
- Comparator
- the other wheat genotypese1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At moderate water deficit stress, BARI Gom 25, E 34, E 28 and BAW 1170 showed more stress tolerance”
e1“than the other wheat genotypes”
t0“Wheat”
Claim · model-written summary
At moderate deficit, Sourav, E 23 and BAW 1140 showed greater sensitivity than other wheat genotypes.
- Taxon
- WheatTriticum aestivumt0
- Material
- Sourav, E 23 and BAW 1140e0
- Treatment
- moderate water deficit stresse1
- Outcome
- stress sensitivitye0
- Direction
- greatere0
- Comparator
- the other wheat genotypese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sourav, E 23 and BAW 1140 showed greater stress sensitivity than the other wheat genotypes”
e1“At moderate water deficit stress”
t0“Wheat”
Claim · model-written summary
At higher deficit, BARI Gom 25, BARI Gom 28, E 28 and BAW 1170 showed more tolerance.
- Taxon
- WheatTriticum aestivumt0
- Material
- BARI Gom 25, BARI Gom 28, E 28 and BAW 1170e0
- Treatment
- higher water deficit stresse0
- Outcome
- stress tolerancee0
- Direction
- moree0
- Comparator
- the otherse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At higher water deficit stress, BARI Gom 25, BARI Gom 28, E 28 and BAW 1170 showed more stress tolerance”
e1“than the others”
t0“Wheat”
Claim · model-written summary
At higher deficit, nine named wheat genotypes showed greater sensitivity than others.
- Taxon
- WheatTriticum aestivumt0
- Material
- Satabdi, Sourav, BARI Gom 26, E 23, E 38, E 24, BAW 1163, BAW 1140 and BAW 1151e0
- Treatment
- higher water deficit stresse1
- Outcome
- stress sensitivitye0
- Direction
- greatere0
- Comparator
- the otherse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Satabdi, Sourav, BARI Gom 26, E 23, E 38, E 24, BAW 1163, BAW 1140 and BAW 1151 showed greater stress sensitivity than the others”
e1“At higher water deficit stress”
t0“Wheat”
Claim · model-written summary
Across both stress levels, BARI Gom 25, E 28 and BAW 1170 were tolerant.
- Taxon
- WheatTriticum aestivumt0
- Material
- BARI Gom 25, E 28 and BAW 1170e0
- Treatment
- moderate and high water deficit stresse0
- Outcome
- tolerante0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Considering both moderate and high water deficit stress, BARI Gom 25, E 28 and BAW 1170 were found as tolerant”
t0“Wheat”
Claim · model-written summary
Across both stress levels, Sourav, E 23 and BAW 1140 were water deficit sensitive.
- Taxon
- WheatTriticum aestivumt0
- Material
- Sourav, E 23 and BAW 1140e0
- Treatment
- moderate and high water deficit stresse1
- Outcome
- water deficit stress sensitivee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sourav, E 23 and BAW 1140 were found as water deficit stress sensitive wheat genotypes”
e1“Considering both moderate and high water deficit stress”
t0“Wheat”
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