Abstract
SUMMARY Mycorrhizal infection and growth of Trifolium subterraneum have been measured, using plants grown in soil/sand mixtures containing natural inoculum, and plants grown in sterilized soil/sand mixtures to which mycorrhizal T. subterraneum roots were added as an artificial inoculum. As control treatments, plants have been grown in sterilized soil/sand mixtures without the addition of roots, or in soil/sand mixtures with the addition of non‐mycorrhizal roots. In one experiment, the two methods of inoculation resulted in similar increases in leaf numbers and in weight. In the second experiment, the growth responses of plants artificially inoculated were less than those of plants with natural inoculum and this was related to delayed mycorrhizal infection. In the third experiment, mycorrhizal infection was again delayed when artificial inoculum was used: this experiment was terminated before increases in weight occurred. The extent and location of mycorrhizal infection from artificial inoculum depended on the location (in the pots) of the added inoculum. The advantages and disadvantages of these two methods of studying mycorrhizal infection are assessed in relation to the different aims of investigations of the mycorrhizal symbiosis.
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Claims 6
Claim · model-written summary
Both inoculation methods similarly increased leaf number and weight in the first experiment.
- Taxon
- Trifolium subterraneum
Trifolium subterraneumt0 - Treatment
- two methods of inoculatione0
- Outcome
- leaf numbers and in weighte0
- Direction
- increasese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In one experiment, the two methods of inoculation resulted in similar increases in leaf numbers and in weight.”
t0“TRIFOLIUM SUBTERRANEUM”
Claim · model-written summary
Artificial inoculation produced smaller growth responses than natural inoculum in the second experiment.
- Taxon
- Trifolium subterraneumTrifolium subterraneumt0
- Treatment
- artificially inoculatede0
- Outcome
- growth responsese0
- Direction
- less thane0
- Comparator
- natural inoculume0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the second experiment, the growth responses of plants artificially inoculated were less than those of plants with natural inoculum and this was related to delayed mycorrhizal infection.”
t0“TRIFOLIUM SUBTERRANEUM”
Claim · model-written summary
Artificial inoculation delayed mycorrhizal infection in the second experiment.
- Taxon
- Trifolium subterraneumTrifolium subterraneumt0
- Treatment
- artificially inoculatede0
- Outcome
- mycorrhizal infectione0
- Direction
- delayede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the second experiment, the growth responses of plants artificially inoculated were less than those of plants with natural inoculum and this was related to delayed mycorrhizal infection.”
t0“TRIFOLIUM SUBTERRANEUM”
Claim · model-written summary
Artificial inoculum again delayed infection in the third experiment.
- Taxon
- Trifolium subterraneumTrifolium subterraneumt0
- Treatment
- artificial inoculume0
- Outcome
- mycorrhizal infectione0
- Direction
- delayede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the third experiment, mycorrhizal infection was again delayed when artificial inoculum was used: this experiment was terminated before increases in weight occurred.”
t0“TRIFOLIUM SUBTERRANEUM”
Claim · model-written summary
The third experiment ended before weight increases occurred.
- Taxon
- Trifolium subterraneumTrifolium subterraneumt0
- Outcome
- increases in weighte0
- Direction
- before increasese0
- Qualifier
- this experiment was terminatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the third experiment, mycorrhizal infection was again delayed when artificial inoculum was used: this experiment was terminated before increases in weight occurred.”
t0“TRIFOLIUM SUBTERRANEUM”
Claim · model-written summary
Artificial inoculum placement determined infection extent and location.
- Taxon
- Trifolium subterraneumTrifolium subterraneumt0
- Treatment
- artificial inoculume0
- Outcome
- extent and location of mycorrhizal infectione0
- Setting
- location (in the pots) of the added inoculume0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The extent and location of mycorrhizal infection from artificial inoculum depended on the location (in the pots) of the added inoculum.”
t0“TRIFOLIUM SUBTERRANEUM”
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