Abstract
The tuberous roots of Aconitum carmichaeli are largely used in traditional Chinese medicine and widely grown in Jiangyou,Sichuan,China. During the growth process,this medicinal plant releases a large amount of allelochemicals into soil,which retard the growth and development of near and late crops. Therefore,a pure culture experiment was thus carried out by seed soaking to study the allelopathic effects of extracts from tuberous roots of A. carmichaeli( ETR) on the seed germination and young seedling growth of Lolium perenne,Trifolium repens,and Medicago sativa,the late pasture grasses after cultivation of A. carmichaeli. The results showed that three pasture grasses varied significantly in seed germination and young seedling growth in response to ETR concentrations. Seed germination of M. sativa was stimulated by low ERT concentration( 0. 01 g·L- 1),while all of pasture grass seeds germinated poorly in solution with 1. 00 g·L- 1. Seed soaking with 1. 00 g·L- 1also inhibited significantly the growth of pasture young seedlings,with M. sativa showing the highest seedling height reduction of 42. 05% in seeding height,followed by T. repens( 40. 21%) and L. perenne with about 11%. Cultivation of L. perenne could thus be beneficial to increase whole land productivity in A. carmichaeli-pasture grass cropping systems. In addition,hydrolysis of protein,starch,and inositol phosphates was blocked and free amino acids,soluble sugars and phosphorus were decreased in seeds by seed soaking with ETR,which could be one of the reason for the inhibition of seed germination. There was a significant reduction in root vigor,nitrate reductase,and chlorophyll after the seed treatment with ETR,indicating the suppression of nutrient uptake,nitrate assimilation,and photosynthesis by allelopathic chemicals in ETR,which could lead to the slow growth rate of pasture grass seedlings.
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Claims 11
Claim · model-written summary
Low ETR concentration (0.01 g/L) stimulated seed germination of Medicago sativa.
- Taxon
- M. sativa
Medicago sativae1 - Treatment
- low ERT concentratione1
- Outcome
- Seed germinatione1
- Direction
- stimulatede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Seed germination of M. sativa was stimulated by low ERT concentration( 0. 01 g·L- 1)”
Claim · model-written summary
At 1.00 g/L ETR, pasture grass seeds germinated poorly.
Not reportedComparator
Verbatim
e2“all of pasture grass seeds germinated poorly in solution with 1. 00 g·L- 1”
Claim · model-written summary
Seed soaking with 1.00 g/L ETR significantly reduced Medicago sativa seedling height by 42.05%, the highest reduction of the three grasses.
- Taxon
- M. sativaMedicago sativae3
- Treatment
- Seed soaking with 1. 00 g·L- 1e3
- Outcome
- seedling heighte3
- Direction
- reductione3
- Value
- 42. 05%e3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Seed soaking with 1. 00 g·L- 1also inhibited significantly the growth of pasture young seedlings,with M. sativa showing the highest seedling height reduction of 42. 05% in seeding height”
Claim · model-written summary
Seed soaking with 1.00 g/L ETR reduced Trifolium repens seedling height by 40.21%.
- Taxon
- T. repens
Trifolium repense4 - Treatment
- Seed soaking with 1. 00 g·L- 1e3
- Outcome
- seedling heighte3
- Direction
- reductione3
- Value
- 40. 21%e4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Seed soaking with 1. 00 g·L- 1also inhibited significantly the growth of pasture young seedlings,with M. sativa showing the highest seedling height reduction of 42. 05% in seeding height”
e4“followed by T. repens( 40. 21%) and L. perenne with about 11%”
Claim · model-written summary
Seed soaking with 1.00 g/L ETR reduced Lolium perenne seedling height by about 11%.
- Taxon
- L. perenne
Lolium perennee4 - Treatment
- Seed soaking with 1. 00 g·L- 1e3
- Outcome
- seedling heighte3
- Direction
- reductione3
- Value
- about 11%e4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Seed soaking with 1. 00 g·L- 1also inhibited significantly the growth of pasture young seedlings,with M. sativa showing the highest seedling height reduction of 42. 05% in seeding height”
e4“followed by T. repens( 40. 21%) and L. perenne with about 11%”
Claim · model-written summary
Cultivating L. perenne could increase whole land productivity in A. carmichaeli-pasture grass cropping systems.
- Taxon
- L. perenneLolium perennee5
- Outcome
- whole land productivitye5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“Cultivation of L. perenne could thus be beneficial to increase whole land productivity in A. carmichaeli-pasture grass cropping systems”
Claim · model-written summary
Seed soaking with ETR blocked hydrolysis of protein, starch and inositol phosphates in seeds.
- Taxon
- pasture grassese0
- Treatment
- seed soaking with ETRe6
- Outcome
- hydrolysis of protein,starch,and inositol phosphatese6
- Direction
- blockede6
Not reportedComparator
Verbatim
e0“allelopathic effects of extracts from tuberous roots of A. carmichaeli( ETR) on the seed germination and young seedling growth of Lolium perenne,Trifolium repens,and Medicago sativa,the late pasture grasses”
e6“hydrolysis of protein,starch,and inositol phosphates was blocked and free amino acids,soluble sugars and phosphorus were decreased in seeds by seed soaking with ETR”
Claim · model-written summary
Seed soaking with ETR decreased free amino acids, soluble sugars and phosphorus in seeds.
- Taxon
- pasture grassese0
- Treatment
- seed soaking with ETRe6
- Outcome
- free amino acids,soluble sugars and phosphoruse6
- Direction
- decreasede6
Not reportedComparator
Verbatim
e0“allelopathic effects of extracts from tuberous roots of A. carmichaeli( ETR) on the seed germination and young seedling growth of Lolium perenne,Trifolium repens,and Medicago sativa,the late pasture grasses”
e6“hydrolysis of protein,starch,and inositol phosphates was blocked and free amino acids,soluble sugars and phosphorus were decreased in seeds by seed soaking with ETR”
Claim · model-written summary
Seed treatment with ETR significantly reduced root vigor, nitrate reductase and chlorophyll.
- Taxon
- pasture grassese0
- Treatment
- seed treatment with ETRe7
- Outcome
- root vigor,nitrate reductase,and chlorophylle7
- Direction
- reductione7
Not reportedComparator
Verbatim
e0“allelopathic effects of extracts from tuberous roots of A. carmichaeli( ETR) on the seed germination and young seedling growth of Lolium perenne,Trifolium repens,and Medicago sativa,the late pasture grasses”
e7“There was a significant reduction in root vigor,nitrate reductase,and chlorophyll after the seed treatment with ETR”
Claim · model-written summary
Suppressed nutrient uptake, nitrate assimilation and photosynthesis by allelochemicals may explain slow seedling growth.
Verbatim
e0“indicating the suppression of nutrient uptake,nitrate assimilation,and photosynthesis by allelopathic chemicals in ETR,which could lead to the slow growth rate of pasture grass seedlings”
Claim · model-written summary
Three pasture grasses varied significantly in seed germination and young seedling growth in response to ETR concentrations.
- Taxon
- pasture grassese0
- Treatment
- ETR concentrationse0
- Outcome
- seed germination and young seedling growthe0
Not reportedComparatorDirection
Verbatim
e0“three pasture grasses varied significantly in seed germination and young seedling growth in response to ETR concentrations”
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See all 34 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.