Chiscon, J. A.
The following traits are characteristic of seedlings containing the given combinations of chlorophyll mutations.
md;pa -- The seedlings resemble but are shorter than md.
The cotyledons and first leaflets have lighter
green midribs.
md;yg\4 -- This seedling is difficult to distinguish. The
cotyledons and leaves are yellower than yg\4.
Mottling is very light.
md;yo -- The cotyledons are yellower thah yo or md.
The mottling effect is lighter.
md;pl -- The cotyledons and first leaflets are a ....
yellow-green than either md or pl. The seedlings
are indistinguishable from pl during the first
few days following germination. The cotyledons
eventually lose much of their green color and the
seedlings become slower in growth.
md;yg\2;yo -- The cotyledons and leaflets are yellow-white. All
the triple mutants obtained died in the seedling
stage.
nd;pl -- The cotyledons are the same shade as yg\3. The
first leaflets resemble nd.
nd;yg\3 -- The cotyledons are the same shade as yg\3. The
first leaflets resemble nd.
pl;yo -- The seedlings are etiolated. The cotyledons are
small and a lighter shade of yellow-green than
either yo or pl. The first leaflets are
yellow-white.
yg2;yo -- The leaflets have yellow-white patches.
yg3;yo -- The cotyledons and first leaflets are more
yellow-green than yg\3 or yo. The leaflets are
curled up at first.
The hypocotyl resembles yo in that it has a
smaller amount of visible anthocyanin.
yg\3;yg\4 -- We have not been able to identify this seedling.
A greater number of yg\3 seedlings are obtained
in segregating flats (see F2 data). It is
possible the double mutants are in this group.
This would be surprising since yg\4 is a more
"severe" mutation than yg\3.