Abstract
Enhancing the drought tolerance of rice variety is an important technology and strategy to food safety of China.Improvement and innovation of rice drought tolerance index is the key to improve drought tolerance rice variety and breeding technology.In this research,different rice varieties were used to identify physiological traits associated with drought tolerance.The major traits were leaf water pressure potential,leaf midrib coarse,mesophyll thickness and relative water content,the difference between typical rice and the other rice type under drought environment.Difference between two treatments of drought and flooded was studied.Correlation between tested traits and yield drought resistant index,booting stage biomass drought resistant index,harvest stage biomass drought resistant index was analysed.The result showed that leaf water pressure potential,leaf midrib coarse,mesophyll thickness and relative water content could be used as index for drought tolerance identification in rice,though this method could miss some drought tolerant materials.The leaf water pressure potential,mesophyll thickness were correlated with dry matter production and accumulation,and consequently with the final yield.Therefore,the leaf water pressure potential,leaf midrib coarse was recommended as main index,complemented with other index in rice breeding for drought tolerance.
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Claims 4
Claim · model-written summary
Leaf water pressure potential, leaf midrib coarse, mesophyll thickness and relative water content could serve as indices for drought tolerance identification in rice, though they could miss some tolerant materials.
- Taxon
- rice
Oryza sativae1 - Outcome
- index for drought tolerance identificatione1
- Qualifier
- could miss some drought tolerant materialse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The result showed that leaf water pressure potential,leaf midrib coarse,mesophyll thickness and relative water content could be used as index for drought tolerance identification in rice,though this method could miss some drought tolerant materials”
Claim · model-written summary
Leaf water pressure potential and mesophyll thickness were correlated with dry matter production and accumulation.
- Taxon
- riceOryza sativae0
- Organ / stage
- leafe2
- Outcome
- dry matter production and accumulatione2
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Enhancing the drought tolerance of rice variety”
e2“The leaf water pressure potential,mesophyll thickness were correlated with dry matter production and accumulation, and consequently with the final yield”
Claim · model-written summary
Leaf water pressure potential and mesophyll thickness were correlated with the final yield.
- Taxon
- riceOryza sativae0
- Organ / stage
- leafe2
- Outcome
- final yielde2
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Enhancing the drought tolerance of rice variety”
e2“The leaf water pressure potential,mesophyll thickness were correlated with dry matter production and accumulation, and consequently with the final yield”
Claim · model-written summary
Leaf water pressure potential and leaf midrib coarse were recommended as the main drought tolerance indices in rice breeding.
- Taxon
- riceOryza sativae3
- Outcome
- main indexe3
- Qualifier
- complemented with other index in rice breeding for drought tolerancee3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Therefore,the leaf water pressure potential,leaf midrib coarse was recommended as main index,complemented with other index in rice breeding for drought tolerance”