new term suggestion: cauline & basal axillary branches

[Peter Stevens]

>Hi Everyone,
>
>We had a discussion on this sometime back but the terms never made 
>it to the plant structure ontology. Here is it again.
>
>new term : cauline axillary branch
>def: an axillary branch that forms  above ground level and on an 
>elongated (cauline) internode


Note that there will nearly always be problems with definitions like 
this that have two independent variables.  What does one do with 
axillary shoots associated with short internodes on above-ground 
branches, e.g. some magnolia, rhododendron, Enkianthus. apple 
relatives?

P.

>
>new term: basal axillary branch
>synonym: tiller, primary tiller, primary basal axillary branch, 
>first order basal axillary branch
>def: An axillary  branch that forms at ground level, generally from 
>a non elongating (basal) internode
>
>new term: second order basal axillary branch
>synonym: secondary tiller, secondary basal axillary branch, 
>secondary order basal axillary branch
>def: An axillary  branch that forms at ground level, generally from 
>a non elongating (basal) internode of the first order basal axillary 
>branch
>
>new term: third order basal axillary branch
>synonym: tertiary tiller, tertiary basal axillary branch, tertiary 
>basal axillary branch
>def: An axillary  branch that forms at ground level, generally from 
>a non elongating (basal) internode of the second order basal 
>axillary branch
>
>Suggested structure in ontology.
>[i] = instance of
>
>--PO:0009006 : shoot
>--[i]--PO:0006343 : axillary shoot (this has a synonym tiller)
>-------[i]--PO:new : cauline axillary branch
>-------[i]--PO:new : basal axillary branch
>-----------[i]--PO:new : second order basal axillary branch
>-----------[i]--PO:new : third order basal axillary branch
>
>
>PO:0006343 : axillary shoot term has a synonym "tiller" that will be 
>moved to PO:new : basal axillary branch.
>
>PO:0006343 : axillary shoot can then have a new synonyms "branch" and "ratoon"
>
>Ratoon:  A shoot sprouting from a plant base, as in the banana, 
>pineapple, sugar cane, bamboo, or in rice after the first harvest 
>where basal portion of plant is still attached to ground and can 
>generate new tillers/axillary shoots.
>
>
>If you would like to see the discussion Toby and I had on this 
>issues please see 
>http://ascus.plbr.cornell.edu/~pankaj/branch/branch.txt
>
>The tillering patterns in rice are called by primary, secondary and 
>tertiary names. Please see the scanned document from an IRRI 
>publication
>http://ascus.plbr.cornell.edu/~pankaj/branch/rice-tillering.jpg
>
>
>-Pankaj