Abstract
To define the allelopathic effect of cotton straw on wheat,an experiment using the seeds of wheat cultivar Yangmai 13 treated with different concentration of water extract of cotton straw was carried out to study the effects of cotton straw extract on seed germination and seedling growth of wheat.The results showed that when the concentration of extract was below 7.0%,germinating time of wheat seed was delayed while its germination rate was not affected,yet when the concentration was over 7.0%,germination time was delayed and germination rate was decreased.There were differences between the effects of extract of cotton stalk on shoot and root of wheat.For roots,when the extract was below 1.0%,minor effect on root development was observed,when the concentration was over1.0%,the total length,surface area and vigor of root were all decreased,but lipid peroxidation was increased,which caused the decrease in absorption capacity of water and nutrient of root and transport capacity to shoot.For shoots,when the concentration of extract was less than 4.0%,the absorption ofnitrogen,phosphorus,potassium and water was facilitated in wheat seedling shoot,the effects was gradually weakening as the increase of the concentration of extract,till to inhibiting effect.The extract was quite high in total phenolic content,which reached 124.0mg·L-1.Total phenolic acid content was significantly and negatively correlated to germination rate,germination potential,germination index,whole plant fresh weight,root/shoot,root water content,total root length,root surface area and root vigor index,while positively correlated to contents of nitrogen,phosphorus,potassium and malondialdehyde content in roots.The allelopathic effects of the extract were related to the total phenolic content,which could influence the uptake and transport of water or nutrient.
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Claims 11
Claim · model-written summary
Below 7.0% extract, wheat seed germination time was delayed.
- Taxon
- wheat
Triticum aestivume0 - Treatment
- water extract of cotton strawe1
- Outcome
- germinating time of wheat seede0
- Direction
- delayede0
- Qualifier
- below 7.0%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“when the concentration of extract was below 7.0%,germinating time of wheat seed was delayed”
e1“water extract of cotton straw”
Claim · model-written summary
Below 7.0% extract, wheat germination rate was unaffected.
- Taxon
- wheatTriticum aestivume0
- Treatment
- water extract of cotton strawe1
- Outcome
- germination ratee0
- Direction
- not affectede0
- Qualifier
- below 7.0%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“when the concentration of extract was below 7.0%,germinating time of wheat seed was delayed while its germination rate was not affected”
e1“water extract of cotton straw”
Claim · model-written summary
Above 7.0% extract, wheat germination time was delayed.
- Taxon
- wheatTriticum aestivume1
- Material
- Yangmai 13e1
- Treatment
- water extract of cotton strawe1
- Outcome
- germination timee0
- Direction
- delayede0
- Qualifier
- over 7.0%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“when the concentration was over 7.0%,germination time was delayed and germination rate was decreased”
e1“seeds of wheat cultivar Yangmai 13 treated with different concentration of water extract of cotton straw”
Claim · model-written summary
Above 7.0% extract, wheat germination rate decreased.
- Taxon
- wheatTriticum aestivume1
- Treatment
- water extract of cotton strawe1
- Outcome
- germination ratee0
- Direction
- decreasede0
- Qualifier
- over 7.0%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“when the concentration was over 7.0%,germination time was delayed and germination rate was decreased”
e1“seeds of wheat cultivar Yangmai 13 treated with different concentration of water extract of cotton straw”
Claim · model-written summary
Below 1.0% extract, wheat root development showed a minor effect.
- Taxon
- wheatTriticum aestivume1
- Treatment
- extracte0
- Outcome
- minor effect on root developmente0
- Qualifier
- below 1.0%e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“when the extract was below 1.0%,minor effect on root development was observed”
e1“wheat cultivar Yangmai 13”
Claim · model-written summary
Above 1.0% extract, wheat root length, surface area and vigor decreased.
- Taxon
- wheatTriticum aestivume1
- Treatment
- water extract of cotton strawe2
- Outcome
- total length,surface area and vigor of roote0
- Direction
- decreasede0
- Qualifier
- over1.0%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“when the concentration was over1.0%,the total length,surface area and vigor of root were all decreased”
e1“wheat cultivar Yangmai 13”
e2“water extract of cotton straw”
Claim · model-written summary
Above 1.0% extract, wheat root lipid peroxidation increased.
- Taxon
- wheatTriticum aestivume1
- Treatment
- water extract of cotton strawe2
- Outcome
- lipid peroxidatione0
- Direction
- increasede0
- Qualifier
- over1.0%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“when the concentration was over1.0%,the total length,surface area and vigor of root were all decreased,but lipid peroxidation was increased”
e1“wheat cultivar Yangmai 13”
e2“water extract of cotton straw”
Claim · model-written summary
Below 4.0% extract, shoot uptake of nitrogen, phosphorus, potassium and water was facilitated.
- Taxon
- wheatTriticum aestivume0
- Organ / stage
- shoote0
- Treatment
- water extract of cotton strawe1
- Outcome
- absorption ofnitrogen,phosphorus,potassium and watere0
- Direction
- facilitatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“when the concentration of extract was less than 4.0%,the absorption ofnitrogen,phosphorus,potassium and water was facilitated in wheat seedling shoot”
e1“water extract of cotton straw”
Claim · model-written summary
The extract had total phenolic content of 124.0mg·L-1.
- Taxon
- wheatTriticum aestivume1
- Outcome
- total phenolic contente0
- Value
- 124.0mg·L-1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The extract was quite high in total phenolic content,which reached 124.0mg·L-1”
e1“wheat cultivar Yangmai 13”
Claim · model-written summary
Total phenolic acid content was significantly negatively correlated with germination and root growth traits.
- Taxon
- wheatTriticum aestivume1
- Compound
- Total phenolic acide0
- Outcome
- germination rate,germination potential,germination indexe0
- Direction
- negativelye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Total phenolic acid content was significantly and negatively correlated to germination rate,germination potential,germination index,whole plant fresh weight,root/shoot,root water content,total root length,root surface area and root vigor index”
e1“wheat cultivar Yangmai 13”
Claim · model-written summary
Total phenolic acid content was positively correlated with root nutrient and malondialdehyde content.
- Taxon
- wheatTriticum aestivume2
- Compound
- Total phenolic acide1
- Outcome
- contents of nitrogen,phosphorus,potassium and malondialdehyde content in rootse0
- Direction
- positivelye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“positively correlated to contents of nitrogen,phosphorus,potassium and malondialdehyde content in roots”
e1“Total phenolic acid content”
e2“wheat cultivar Yangmai 13”
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