Abstract
Two kinds of size change occur in the apical dome of Agropyron repens during development of the shoot. A cyclic increase and decrease in size results from the production of a new stem segment and associated leaf primordium during each plastochron. A progressive increase and then decrease in size, which occur over a period of several plastochrons, is attributable to discrepancies between the size increment during each plastochron and the size of the stem segment formed at the end of the plastochron. The volume doubling time of the dome remains constant at approximately one plastochron. Fluctuations in mean cell generation time correlate with changes in mean cell volume and do not contribute to the size changes of the dome.
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Claims 6
Claim · model-written summary
The cyclic increase and decrease in shoot apex size of Agropyron repens results from production of a new stem segment and leaf primordium each plastochron.
- Taxon
- Agropyron repens
Elymus repenst0 - Outcome
- cyclic increase and decrease in sizee1
- Qualifier
- production of a new stem segment and associated leaf primordium during each plastochrone1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Growth of the Shoot Apex of Agropyron repens (L.) Beauv.”
e1“A cyclic increase and decrease in size results from the production of a new stem segment and associated leaf primordium during each plastochron”
Claim · model-written summary
A progressive increase and then decrease in apex size of Agropyron repens occurs over several plastochrons.
- Taxon
- Agropyron repensElymus repenst0
- Outcome
- progressive increase and then decrease in sizee2
- Qualifier
- over a period of several plastochronse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Growth of the Shoot Apex of Agropyron repens (L.) Beauv.”
e2“A progressive increase and then decrease in size, which occur over a period of several plastochrons”
Claim · model-written summary
The progressive size change of the apex is attributable to discrepancies between the size increment per plastochron and the size of the stem segment formed at its end.
- Taxon
- Agropyron repensElymus repenst0
- Outcome
- progressive increase and then decrease in sizee2
- Qualifier
- discrepancies between the size increment during each plastochron and the size of the stem segment formed at the end of the plastochrone3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Growth of the Shoot Apex of Agropyron repens (L.) Beauv.”
e2“A progressive increase and then decrease in size, which occur over a period of several plastochrons”
e3“is attributable to discrepancies between the size increment during each plastochron and the size of the stem segment formed at the end of the plastochron”
Claim · model-written summary
The volume doubling time of the apical dome of Agropyron repens remains constant at approximately one plastochron.
- Taxon
- Agropyron repensElymus repenst0
- Outcome
- volume doubling time of the domee4
- Value
- approximately one plastochrone4
- Qualifier
- remains constante4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Growth of the Shoot Apex of Agropyron repens (L.) Beauv.”
e4“The volume doubling time of the dome remains constant at approximately one plastochron”
Claim · model-written summary
Fluctuations in mean cell generation time correlate with changes in mean cell volume in Agropyron repens apex cells.
- Taxon
- Agropyron repensElymus repenst0
- Treatment
- Fluctuations in mean cell generation timee5
- Outcome
- changes in mean cell volumee5
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Growth of the Shoot Apex of Agropyron repens (L.) Beauv.”
e5“Fluctuations in mean cell generation time correlate with changes in mean cell volume and do not contribute to the size changes of the dome”
Claim · model-written summary
Fluctuations in mean cell generation time do not contribute to the size changes of the apical dome of Agropyron repens.
- Taxon
- Agropyron repensElymus repenst0
- Treatment
- Fluctuations in mean cell generation timee5
- Outcome
- size changes of the domee5
- Direction
- no_changeinferrede5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Growth of the Shoot Apex of Agropyron repens (L.) Beauv.”
e5“Fluctuations in mean cell generation time correlate with changes in mean cell volume and do not contribute to the size changes of the dome”