Abstract
It has been found that the natural regeneration of Magnolia sargentiana, an ornamental endemic to China, is highly poor, which is worth investigating cause. Embryos in mature M. sargentiana seeds are extremely small. The embryos markedly grew in the process of both cold(4 ℃) and warm stratif ication(15 ℃) regardless of plant growth regulator pretreatment of GA 3 and 6-BA solutions, and germinated at a range of temperatures, 30 ℃/20 ℃ of which was optimal. These data illustrated that morphological dormancy is caused by an underdeveloped embryo that must mature prior to germination. In addition, M. sargentiana seeds could tolerate desiccation to a limited extent. The seed survival rates were 78.3% and 40% at 7.1% and 5.3% of water contents, respectively. When the seeds with 9.4% or 7.1% of water content were conserved at –20 ℃ for 6 months, they completely lost viability. However, if the same seeds were hermetically stored at 0 ℃ and 4 ℃ for 6 months, their viability was almost unchanged. These results fully confirm that M. sargentiana seeds are intermediate.
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Claims 9
Claim · model-written summary
Embryos of Magnolia sargentiana grew markedly under cold and warm stratification, regardless of GA3 and 6-BA pretreatment.
- Taxon
- Magnolia sargentiana
Magnolia sargentianat0 - Treatment
- cold(4 ℃) and warm stratif ication(15 ℃)e1
- Outcome
- embryose1
- Direction
- markedly grewe1
- Qualifier
- regardless of plant growth regulator pretreatment of GA 3 and 6-BA solutionse1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Seed Dormancy and Storage Behavior of Magnolia sargentiana”
e1“The embryos markedly grew in the process of both cold(4 ℃) and warm stratif ication(15 ℃) regardless of plant growth regulator pretreatment of GA 3 and 6-BA solutions”
Claim · model-written summary
Germination of Magnolia sargentiana seeds was optimal at 30 ℃/20 ℃ among the tested temperatures.
- Taxon
- Magnolia sargentianaMagnolia sargentianat0
- Treatment
- a range of temperaturese2
- Outcome
- germinatede2
- Value
- 30 ℃/20 ℃e2
- Qualifier
- of which was optimale2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Seed Dormancy and Storage Behavior of Magnolia sargentiana”
e2“germinated at a range of temperatures, 30 ℃/20 ℃ of which was optimal”
Claim · model-written summary
Morphological dormancy of Magnolia sargentiana is caused by an underdeveloped embryo that must mature before germination.
- Taxon
- Magnolia sargentianaMagnolia sargentianat0
- Organ / stage
- underdeveloped embryoe3
- Outcome
- morphological dormancye3
- Qualifier
- must mature prior to germinatione3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Seed Dormancy and Storage Behavior of Magnolia sargentiana”
e3“morphological dormancy is caused by an underdeveloped embryo that must mature prior to germination”
Claim · model-written summary
Seed survival rate of Magnolia sargentiana was 78.3% at 7.1% water content.
- Taxon
- Magnolia sargentianaMagnolia sargentianat0
- Outcome
- seed survival ratese4
- Value
- 78.3%e4
- Qualifier
- at 7.1%e4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Seed Dormancy and Storage Behavior of Magnolia sargentiana”
e4“The seed survival rates were 78.3% and 40% at 7.1% and 5.3% of water contents, respectively”
Claim · model-written summary
Seed survival rate of Magnolia sargentiana was 40% at 5.3% water content.
- Taxon
- Magnolia sargentianaMagnolia sargentianat0
- Outcome
- seed survival ratese4
- Value
- 40%e4
- Qualifier
- 5.3%e4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Seed Dormancy and Storage Behavior of Magnolia sargentiana”
e4“The seed survival rates were 78.3% and 40% at 7.1% and 5.3% of water contents, respectively”
Claim · model-written summary
Seeds at 9.4% or 7.1% water content conserved at –20 ℃ for 6 months completely lost viability, unlike seeds hermetically stored at 0 ℃ and 4 ℃.
- Taxon
- Magnolia sargentianaMagnolia sargentianat0
- Treatment
- conserved at –20 ℃ for 6 monthse5
- Outcome
- viabilitye5
- Direction
- completely loste5
- Qualifier
- 9.4% or 7.1% of water contente5
- Comparator
- hermetically stored at 0 ℃ and 4 ℃e6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Seed Dormancy and Storage Behavior of Magnolia sargentiana”
e5“When the seeds with 9.4% or 7.1% of water content were conserved at –20 ℃ for 6 months, they completely lost viability”
e6“However, if the same seeds were hermetically stored at 0 ℃ and 4 ℃ for 6 months, their viability was almost unchanged”
Claim · model-written summary
Seeds hermetically stored at 0 ℃ and 4 ℃ for 6 months kept their viability almost unchanged.
- Taxon
- Magnolia sargentianaMagnolia sargentianat0
- Treatment
- hermetically stored at 0 ℃ and 4 ℃ for 6 monthse6
- Outcome
- viabilitye6
- Direction
- almost unchangede6
- Comparator
- conserved at –20 ℃e5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Seed Dormancy and Storage Behavior of Magnolia sargentiana”
e5“When the seeds with 9.4% or 7.1% of water content were conserved at –20 ℃ for 6 months, they completely lost viability”
e6“However, if the same seeds were hermetically stored at 0 ℃ and 4 ℃ for 6 months, their viability was almost unchanged”
Claim · model-written summary
Magnolia sargentiana seeds could tolerate desiccation to a limited extent.
- Taxon
- Magnolia sargentianaMagnolia sargentianat0
- Outcome
- tolerate desiccatione7
- Qualifier
- to a limited extente7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Seed Dormancy and Storage Behavior of Magnolia sargentiana”
e7“M. sargentiana seeds could tolerate desiccation to a limited extent”
Claim · model-written summary
Magnolia sargentiana seeds are intermediate in storage behaviour.
- Taxon
- Magnolia sargentianaMagnolia sargentianat0
- Outcome
- seeds are intermediatee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Seed Dormancy and Storage Behavior of Magnolia sargentiana”
e0“These results fully confirm that M. sargentiana seeds are intermediate”