Abstract
Two-year-old apple trees(Malus × domestica Borkh.‘Red Fuji')/Malus hupehensis were used to study the effects of six different soil pH treatments(soil pH 6.83,6.40,5.87,5.29,4.58 and 3.82,respectively)on growth and the characteristics of distribution and utilization of carbon and nitrogen using the track technology of13C and15N double mark.The results showed that the biomass of root,above ground,total dry weight,root-cap ratio,net photosynthesis and15N utilization efficiency decreased with the decrease of soil pH value.The15N and13C distribution pattern were consistent in various organs among the different soil pH treatments:Mainly in the leaves,followed by the annual stems,then the roots,and the biennial stems were the least.Differences in the same organ(especially in roots and leaves)in15N and 13C distribution ratio were found among the different soil pH treatments.With the decrease of soil pH value,the15N and13C distribution ratio in leaves increased,while those values in the roots decreased.
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Claims 6
Claim · model-written summary
Root biomass, aboveground biomass, total dry weight and root-cap ratio declined as soil pH fell.
- Taxon
- Malus × domestica
Malus domesticat0 - Treatment
- soil pH valuee0
- Outcome
- biomass of root,above ground,total dry weight,root-cap ratioe0
- Direction
- decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“biomass of root,above ground,total dry weight,root-cap ratio,net photosynthesis and15N utilization efficiency decreased with the decrease of soil pH value”
t0“Malus × domestica”
Claim · model-written summary
Net photosynthesis and 15N utilization efficiency declined as soil pH fell.
- Taxon
- Malus × domesticaMalus domesticat0
- Treatment
- soil pH valuee0
- Outcome
- net photosynthesis and15N utilization efficiencye0
- Direction
- decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“biomass of root,above ground,total dry weight,root-cap ratio,net photosynthesis and15N utilization efficiency decreased with the decrease of soil pH value”
t0“Malus × domestica”
Claim · model-written summary
Across soil pH treatments, 15N and 13C were distributed chiefly in leaves, then annual stems, roots, and least in biennial stems.
- Taxon
- Malus × domesticaMalus domesticat0
- Organ / stage
- leaves,followed by the annual stems,then the roots,and the biennial stemse0
- Outcome
- The15N and13C distribution patterne0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The15N and13C distribution pattern were consistent in various organs among the different soil pH treatments:Mainly in the leaves,followed by the annual stems,then the roots,and the biennial stems were the least”
t0“Malus × domestica”
Claim · model-written summary
15N and 13C distribution ratios in leaves increased as soil pH declined.
- Taxon
- Malus × domesticaMalus domesticat0
- Organ / stage
- leavese0
- Treatment
- soil pH valuee0
- Outcome
- the15N and13C distribution ratio in leavese0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With the decrease of soil pH value,the15N and13C distribution ratio in leaves increased”
t0“Malus × domestica”
Claim · model-written summary
15N and 13C distribution ratios in roots decreased as soil pH declined.
- Taxon
- Malus × domesticaMalus domesticat0
- Organ / stage
- rootse0
- Treatment
- soil pH valuee1
- Outcome
- the15N and13C distribution ratioe1
- Direction
- decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“while those values in the roots decreased”
e1“With the decrease of soil pH value,the15N and13C distribution ratio in leaves increased”
t0“Malus × domestica”
Claim · model-written summary
The same organs, especially roots and leaves, differed in 15N and 13C distribution ratios among pH treatments.
- Taxon
- Malus × domesticaMalus domesticat0
- Organ / stage
- roots and leavese0
- Outcome
- 15N and 13C distribution ratioe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Differences in the same organ(especially in roots and leaves)in15N and 13C distribution ratio were found among the different soil pH treatments”
t0“Malus × domestica”