A Database for Triticeae and Avena
III.5. The use of infrared photography in characterizing chlorophyll
Michael McMullen. Department of Agronomy, Colorado State University,
Fort Collins, Colorado 80521, U.S.A.
The chlorina character of four Trebi mutant lines, Trebi VI, X, XII
and XIII was found to be maternally inherited. It was not possible to distinguish
between these lines using an allelism test, but a difference was expressed
in the F2 generation between plants resulting from the interaction of a
specific homozygous recessive nuclear chlorina gene and the various types
of maternal chlorina cytoplasm. Color infrared photography was used to
distinguish between these lines. Healthy chlorophyll appears deep red using
color infrared photography and abnormal chlorophyll appears a lighter shade
of red to white.
Since a difference between normal and abnormal chlorophyll will be shown
with infrared photography, it was assumed that a difference between the
maternal chlorina Trebi mutants might also be expressed. Using Kodak Ektachrome
infrared film and a No. 12 filter, a difference between the maternally
inherited chlorina mutants was observed in the resulting slides.
This method may be useful in characterizing other chlorophyll mutants,
BGN 2 toc
BGN Main Index