Abstract
To investigate the relationship of the characteristics of offspring from selected individual urban trees to the fitness of the mother trees, seeds were collected in 1991 and 1992 from Acer platanoides (Norway maple), Aesculus hippocastanum (horsechestnut), and Betula pendula (silver birch) along streets in Oslo center, Norway. Half-sib families of A. platanoides, A. hippocastanum, and B. pendula, numbering 12, 12, and 6, respectively, were grown in the roadside soil or in peat for 2 years (1992 and 1993) with seeds collected the previous year. Seedlings grown in the roadside soil were 64% shorter than those grown in peat. Stunting in roadside soil was greatest in A. platanoides and least in B. pendula. In A. platanoides, a significant correlation between height of the seedlings and vigor of the mother trees was found in 1993 but not in 1992. In A, hippocastanum, a correlation was found in both years. Within A. hippocastanum, best vigor and growth were found in seedlings originating from mother trees with excellent vigor, suggesting a potential for selective tree improvement. B. pendula produced the most homogeneous seedlings. Leaf drop occurred earlier in seedlings grown in roadside soil than in peat.
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Claims 9
Claim · model-written summary
Roadside soil seedlings were 64% shorter than peat-grown seedlings.
- Taxon
- Acer platanoides (Norway maple), Aesculus hippocastanum (horsechestnut), and Betula pendula (silver birch)
Betula pendula
Acer platanoides
Aesculus hippocastanumt0 - Treatment
- roadside soile0
- Outcome
- Seedlingse0
- Direction
- shortere0
- Value
- 64%e0
- Comparator
- peate0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seedlings grown in the roadside soil were 64% shorter than those grown in peat”
t0“Acer platanoides (Norway maple), Aesculus hippocastanum (horsechestnut), and Betula pendula (silver birch)”
Claim · model-written summary
Roadside-soil stunting was greatest in A. platanoides.
- Taxon
- A. platanoidesAcer platanoidese0
- Treatment
- roadside soile0
- Outcome
- Stuntinge0
- Direction
- greateste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Stunting in roadside soil was greatest in A. platanoides and least in B. pendula”
Claim · model-written summary
Roadside-soil stunting was least in B. pendula.
- Taxon
- B. pendulaBetula pendulae0
- Treatment
- roadside soile0
- Outcome
- Stuntinge0
- Direction
- leaste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Stunting in roadside soil was greatest in A. platanoides and least in B. pendula”
Claim · model-written summary
In A. platanoides, seedling height correlated with mother-tree vigor in 1993.
- Taxon
- A. platanoidesAcer platanoidese0
- Material
- mother treese0
- Outcome
- height of the seedlingse0
- Qualifier
- in 1993e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In A. platanoides, a significant correlation between height of the seedlings and vigor of the mother trees was found in 1993 but not in 1992”
Claim · model-written summary
In A. platanoides, the height-vigor correlation was absent in 1992.
- Taxon
- A. platanoidesAcer platanoidese0
- Material
- mother treese0
- Outcome
- height of the seedlingse0
- Qualifier
- not in 1992e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In A. platanoides, a significant correlation between height of the seedlings and vigor of the mother trees was found in 1993 but not in 1992”
Claim · model-written summary
In A. hippocastanum, seedling height correlated with mother-tree vigor in both years.
Not reportedDirection
Verbatim
e0“In A, hippocastanum, a correlation was found in both years”
Claim · model-written summary
Seedlings from A. hippocastanum mother trees with excellent vigor had the best vigor and growth.
- Taxon
- A. hippocastanumAesculus hippocastanume0
- Material
- mother trees with excellent vigore0
- Outcome
- best vigor and growthe0
- Direction
- beste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Within A. hippocastanum, best vigor and growth were found in seedlings originating from mother trees with excellent vigor”
Claim · model-written summary
B. pendula produced the most homogeneous seedlings.
- Taxon
- B. pendulaBetula pendulae0
- Outcome
- homogeneous seedlingse0
- Direction
- moste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“B. pendula produced the most homogeneous seedlings”
Claim · model-written summary
Roadside soil induced earlier seedling leaf drop than peat.
- Taxon
- Acer platanoides (Norway maple), Aesculus hippocastanum (horsechestnut), and Betula pendula (silver birch)Betula pendulaAcer platanoidesAesculus hippocastanumt0
- Treatment
- roadside soile0
- Outcome
- Leaf drope0
- Direction
- earliere0
- Comparator
- peate0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Leaf drop occurred earlier in seedlings grown in roadside soil than in peat”
t0“Acer platanoides (Norway maple), Aesculus hippocastanum (horsechestnut), and Betula pendula (silver birch)”