Cactus color and shape variations
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| Cristated Astrophytum coahuilense |
Cristate plants
Cistated forms occur in different species from the vegetal kingdom,
being frequent in cactus. They generally take place when there is
a change in the growing form on the plant apex. This point of growth
is divided and subdivided, transforming itself into a line which,
when continuing growing only in lateral way, distorts the symmetry
that the plant would normally have, becoming this one a flat body,
often with undulations. Several theories exist on the cause of this
phenomenon, but none of them are absolutely satisfactory. Cristations
can appear as much in new born plants as in older specimens. These
plants can produce flowers, but in some cases they doesn't. The
flowers can be of different size from the normal one and is not
strange to observe differences in shape compared to those of normal
specimens.
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| Astrophytum myriostigma
cristated flower |
In many occasions, cristated plants of species which produce sprouts
or ramifications, send normal, non cristated buds. Seeds coming
from cristated plants can reproduce this deformation in a certain
percentage, but this is always reduced.
monstuous plants
In the case of this morphologic alteration, the plants that have
it are not absolutely symmetrical, but on the contrary the growth
is motley and arrive not to distinguish the ribs nor tubercles in
the body of the plant. Possibly this is due to a recessive genus,
since the appearance of the monstrous shapes in plants coming from
seed, is related to the proportions of genetic inheritance determined
by the laws of Mendel. The well-known Cereus peruvianus var. monstruosus
is an example of this alteration.
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| monstruous Ariocarpus furfuraceus |
Variegated plants
Variegadas plants are those in which a greater or smaller part of
its body does not have the characteristic green color due to the
lack of chlorophyll, predominating other pigments. The color of
variegated zones in a plant is generally yellow although they can
be pigmented of rose, red, brown and other colors. One of the most
characteristic variegated cactus is Gymnocalycium mihanovichii var.
Hibotan, which appeared in Japan in 1941 coming from seed and by
successive selections of sprouts with greater surface covered with
red coming from that first plant, the Japanese cultivator Watanabe
was able to obtain a totally red plant. By means of similar processes
several variegated forms of different colors from the same variety
have been selected.
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| Variegated Ariocarpus trigonus |
Between these colors they stand out the yellow, the pink one, the
chestnut tree. Given the chlorophyll deficiency in totally variegated
plants they must be grafted to survive.
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