I am still in the process of collecting maize genetic parameters to use
with the CERES-Maize model in DSSAT 2.1. As pointed in previous messages,
DSSAT 3.5 would be better, but I am an aging graduate student with a
limited budget; I can afford DSSAT 2.1 but not 3.5. Does anyone have a
copy they don't need and are willing to sell cheap?] I can get some data
from Deborah Muenchrath's dissertation on Tohono O'odham maize; however, I
need to convert GDD10 to GDD8. I think I can convert the GDD but I will
have figure out the total number of days. Is there a simple formula or
program to do this?
I have lost my Netscape address book and old emails. If you have
requested any information I have found out, please let me know again so
I'll know who to send the information to.
I have done enough research to be more specific on the native maize
varieties I am looking at. The archaeological literature on prehistoric
maize
indicates that these varieties were similar to the following modern native
varieties (most from northern Mexico):
Chapalote
Reventador
Mais de Ocho/Harinoso de Ocho
Onaveno
Mais Blando
Pima-Papago
Hopi
Fremont Dent (?)
Mexican Pyramidal (?)
So, I'll renew my request with these specific varieties in mind:
Does anyone have or know where I can find or estimate the genetic
parameters for the CERES-maize model for southwestern US aboriginal maize
varieties? Specifically, I need:
Juvenile Phase: growing degree days (base 8 degrees C) from seedling
emergence to end of juvenile phase (P1)
Photoperiod: photoperiod sensitivity coefficient (P2)
Grain-filling Duration: growing degree days (base 8 degrees C) from silking
to physiological maturity (P5)
Kernel Number: potential maximum kernel number per plant (G2)
Kernel Weight: potential kernel growth rate (mg/kernel per day) from
silking to just before physiological maturity under optimal conditions (G3)
Thanks for any help you can provide.
--
Michael Pool
mpool at austin.cc.tx.us
Austin Community College
Anthropology Department
