HI of OP cultivars native to the U.S. Southwest were about 0.5 in the
couple of studies I've done.
Perhaps HI around 0.5 is not a recent development. Yes, there's much we
could learn from these cultivars if funding were available!
Deborah A. Muenchrath, Ph.D.
Iowa State University
Ames, IA 50011-1010
Phone: (515) 294-5489
e-mail: mnchrath at iastate.edu
>Actually, Thys and I agreed that southern OPVs might have had a relatively low
>HI, although neither of us have data to prove it.
>>These little exchanges have started me to thinking again about the question,
>how soon did HI get to 0.5 (about) in Corn Belt maize and why? Or was it
>there all the time? How about the parents of Corn Belt maize, the northern
>flints and the southern dents? Anderson and Brown showed how different they
>are morphologically (low ear vs. high ear, etc.) but didn't do HI on them.
>>Oh well, another question that won't be answered for lack of funding.
>Donald N. Duvick
>P.O. Box 446, 6837 N.W. Beaver Drive
>Johnston, IA 50131-0446
>Phone/Fax: 515 278 0861
>email: dnd307 at aol.com