Abstract
We adopted root aqueous extracts from Populus tomentosa of different age( 8 years and 45years) at different concentrations( 0.001,0.020,0.050 and0.100 g·mL-1) to deal with the seed germination and seedling growth of three common agronomic crops( Wheat,Alfalfa,Radish) and Poplar. The results showed that the root aqueous extracts of P. tomentosa of both 8 years and 45 years had negative effects on seeds germination,seedlings and roots growth of Wheat,Alfalfa,Radish and poplar at higher concentration( 0.050 and 0.100 g·mL-1),and the inhibited effects decreased gradually with decreasing concentration of root aqueous extract. Occasionally their effects were not significant at lower concentration and even the root aqueous extracts increased seed germination and seedling growth. However,the root aqueous extract of 45 years had positive effects on the seedling growth of poplar,and had no effects on the seed germination of Wheat. Variables related to seed germination were more susceptible for Alfalfa,Radish than for Wheat and Poplar,while seeding height-related variables more susceptible for Wheat than others,and root height-related variables more susceptible for Poplar. In general,the inhibited effects of root aqueous extracts of 8 years on both seeds germination and seedlings growth of plants tested were more intensive than root aqueous extracts of 45 years. The effects of different age root aqueous extracts on seeds germination and seedlings growth of Wheat and Poplar were significantly different,as well as on seeds germination of Alfalfa.
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Claims 5
Claim · model-written summary
High concentrations of young poplar root extract inhibited wheat, alfalfa, radish and poplar germination and growth.
- Taxon
- Wheat,Alfalfa,Radish and poplare0
- Treatment
- root aqueous extracts of P. tomentosae0
- Outcome
- seeds germination,seedlings and roots growthe0
- Direction
- negative effectse0
Not reportedComparator
Verbatim
e0“root aqueous extracts of P. tomentosa of both 8 years and 45 years had negative effects on seeds germination,seedlings and roots growth of Wheat,Alfalfa,Radish and poplar at higher concentration( 0.050 and 0.100 g·mL-1)”
Claim · model-written summary
Inhibition weakened as extract concentration decreased.
Not reportedTaxon
Verbatim
e0“inhibited effects decreased gradually with decreasing concentration of root aqueous extract”
Claim · model-written summary
Extract from 45-year-old poplar promoted poplar seedling growth.
PopulusNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“root aqueous extract of 45 years had positive effects on the seedling growth of poplar”
Claim · model-written summary
Extract from 45-year-old poplar did not affect wheat germination.
- Taxon
- Wheat
Triticum aestivume0 - Outcome
- seed germinatione0
- Direction
- no effectse0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“had no effects on the seed germination of Wheat”
Claim · model-written summary
Eight-year-old poplar extract inhibited germination and seedling growth more than 45-year-old extract.
- Treatment
- root aqueous extracts of 8 yearse0
- Outcome
- seeds germination and seedlings growthe0
- Direction
- more intensivee0
- Comparator
- root aqueous extracts of 45 yearse0
Not reportedTaxon
Verbatim
e0“inhibited effects of root aqueous extracts of 8 years on both seeds germination and seedlings growth of plants tested were more intensive than root aqueous extracts of 45 years”
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