Abstract
The drought tolerance of wheat seedlings from a recombination inbred line (RIL) population derived from crosses between Weimai 8 and Luohan2 and its parents was evaluated according to the drought tolerance indices of 11 early seedling traits and using principal component analysis and K-means clustering methods to select materials with good germplasm. Results indicated that drought could promote the increase of coleoptile length (CL) and inhibit seedling height (SH), longest root length (RL), seedling fresh weight (SFW), shoots fresh weight (STFW), root fresh weight (RFW), seedling dry weight (SDW), shoots dry weight (STDW), root dry weight (RDW), root-to-shoot fresh weight ratio (RSFWR), and root-to-shoot dry weight ratio (RSDWR). Two hundred forty-five lines from a RIL population and two parents were divided into three clusters. The parent Weimai 8 and 101 lines were attributed to drought-sensitive types; the parent Luohan 2 and 102 lines mediated drought-resistant types, and 42 lines were highly drought-resistant types. Whether or not a relatively strong root system could be formed was the most important condition in evaluating the drought tolerance of wheat at the seedling stage. Key words: Recombination inbred line, evaluation of drought tolerance, seedling growth stage, principal component analysis and cluster analysis.
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Claims 10
Claim · model-written summary
Drought increased coleoptile length in wheat seedlings.
- Taxon
- wheat
Triticum aestivumt0 - Treatment
- droughte0
- Outcome
- coleoptile lengthe0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“drought could promote the increase of coleoptile length (CL)”
t0“wheat”
Claim · model-written summary
Drought inhibited seedling height, longest root length, and seedling fresh weight.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- seedling height (SH), longest root length (RL), seedling fresh weight (SFW)e0
- Direction
- inhibite0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“inhibit seedling height (SH), longest root length (RL), seedling fresh weight (SFW)”
t0“wheat”
Claim · model-written summary
Drought inhibited shoot and root fresh weight and seedling dry weight.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- shoots fresh weight (STFW), root fresh weight (RFW), seedling dry weight (SDW)e0
- Direction
- inhibite0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“inhibit seedling height (SH), longest root length (RL), seedling fresh weight (SFW), shoots fresh weight (STFW), root fresh weight (RFW), seedling dry weight (SDW)”
t0“wheat”
Claim · model-written summary
Drought inhibited shoot and root dry weight and root-to-shoot fresh weight ratio.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- droughte1
- Outcome
- shoots dry weight (STDW), root dry weight (RDW), root-to-shoot fresh weight ratio (RSFWR)e0
- Direction
- decreaseinferrede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“shoots dry weight (STDW), root dry weight (RDW), root-to-shoot fresh weight ratio (RSFWR), and root-to-shoot dry weight ratio (RSDWR)”
t0“wheat”
e1“drought could promote the increase of coleoptile length (CL)”
Claim · model-written summary
Drought inhibited root-to-shoot dry weight ratio.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- droughte1
- Outcome
- root-to-shoot dry weight ratioe0
- Direction
- decreaseinferrede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“root-to-shoot dry weight ratio (RSDWR)”
t0“wheat”
e1“drought could promote the increase of coleoptile length (CL)”
Claim · model-written summary
The population and parents were divided into three drought-tolerance clusters.
- Taxon
- wheatTriticum aestivumt0
- Material
- RIL populatione0
- Outcome
- three clusterse0
- Value
- threee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Two hundred forty-five lines from a RIL population and two parents were divided into three clusters.”
t0“wheat”
Claim · model-written summary
Weimai 8 and 101 lines were drought-sensitive.
- Taxon
- wheatTriticum aestivumt0
- Material
- Weimai 8e0
- Outcome
- drought-sensitive typese0
- Value
- 101 linese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The parent Weimai 8 and 101 lines were attributed to drought-sensitive types”
t0“wheat”
Claim · model-written summary
Luohan 2 and 102 lines were drought-resistant.
- Taxon
- wheatTriticum aestivumt0
- Material
- Luohan 2e0
- Outcome
- drought-resistant typese0
- Value
- 102 linese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the parent Luohan 2 and 102 lines mediated drought-resistant types”
t0“wheat”
Claim · model-written summary
Forty-two lines were highly drought-resistant.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- highly drought-resistant typese0
- Value
- 42 linese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“42 lines were highly drought-resistant types”
t0“wheat”
Claim · model-written summary
A strong root system was identified as the most important condition for assessing seedling drought tolerance.
- Taxon
- wheatTriticum aestivume0
- Organ / stage
- root systeme0
- Outcome
- drought tolerancee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Whether or not a relatively strong root system could be formed was the most important condition in evaluating the drought tolerance of wheat at the seedling stage.”
The same questions in other papers
drought · growth · Triticum aestivum (wheat)Positive and negative results
344 papers in the same direction as this paper · 86 in the opposite direction
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