Growth&Dev Curation ATTN Anu, Katica, Leszek

[Marty Sachs]

Mary,

The problem is trying to relate developmental programs that aren't 
necessarily related.  We've discussed this many times before.  The 
number of leaves a plant has doesn't give an indication of where that 
plant is in terms of floral development.  Gaspe Flint is fully mature 
and has flowered with only 5 leaves.  Tropical varieties won't flower 
until the plant has more than 20 leaves.

The fact that corn-belt hybrids flower with a certain number of 
leaves only reflects their particular background.  Nothing general 
can be said about this.

	-Marty

At 3:24 PM -0500 4/24/06, Mary (Polacco) Schaeffer wrote:
>Anu and I have discussed the vagueness some folks use in describing
>developmental stages as presenting a major curation challenge.  I am asking
>for some insight into making the calls in matching a precise PO term, with a
>vague literature or GenBank description, just to be sure I am not out in
>left field with the intentions of this group. Some example calls are below.
>
>In all cases, each gets also a plant anatomy term. Basically I am trying to
>make a statement that would not be wrong, eg at least 6 leaves (maybe more)
>should be visible in most 3-4 week maize plants. An immature ear might be
>considered to be smaller or bigger that 1/4 inflorescence length, etc.
>
>So is there a better call for the below?
>
>For immature ear
>   PO:0007046   IL.01 1/4 inflorescence length reached
>For Immature tassel
>   same as for immature ear.
>For immature seek or kernel
>    PO:0007001   early stage of fruit ripening
>For 3-4 week leaf primordium
>    PO:0007123 LP.06 six leaves visible
>For juvenile shoot
>    PO:0006339  juvenile leaf
>    
>
>
>Thanks,
>  mary
>    
>