IUBio Biosequences .. Software .. Molbio soft .. Network News .. FTP

[Agroforestry] End-of-Day far-red for control of branching

Paul Austin PAustin at hortresearch.co.nz
Thu Nov 3 00:05:39 EST 2005


Hi,

I am interested to know if anyone has had experience using EoD far-red
as a tool to reduce branching in seedling trees.

I have several families of seedling apples growing under a controlled
environment regime - high light, long days, high CO2, high temperature,
root restriction, PGR to reduce internode extension. This regime induces
very high levels of vigour, but has the down-side of inducing every
lateral to branch, and branches to form on those branches, if we let
them! A large waste of biomass and labour.

Any suggestions? Initial experience indicates that "titrating" the EoD
FR to avoid terminal bud set makes this strategy difficult, if not
impossible, and a means of inducing a "shade avoidance" response while
providing high irradiance. Removing the blue end of the spectrum is not
really an option, as this reduces leaf chlorophyll, and photosynthesis.

Bye,

Paul

________________________________________________
Scientist, HortResearch Palmerston North Research Centre
Private Bag 11-030
Palmerston North, NEW ZEALAND
Tel. 6-356-8080 ext 7774   mob. 0275747077




______________________________________________________

The contents of this e-mail are privileged and/or confidential to the
named recipient and are not to be used by any other person and/or
organisation. If you have received this e-mail in error, please notify
the sender and delete all material pertaining to this e-mail.
______________________________________________________
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://www.bio.net/bionet/mm/ag-forst/attachments/20051103/4ec3e867/attachment.html


More information about the Ag-forst mailing list

Send comments to us at biosci-help [At] net.bio.net