-
maintain thousands of "alien"
genes within the
elite cultivar. Many
backcrosses are
required to
produce a new cultivar,
which can take many years. York...
- and
often will not mate with, or even attack, a
domestic cat.
Savannah backcrosses,
called the BC1 generation, can be as high as 75% serval. Such 75% cats...
-
arose from a
sweet orange x
pomelo backcross.
Spontaneous and
engineered backcrosses between the
sweet orange and
mandarin oranges or
tangerines have produced...
- point.
These cryptic species lacked evidence of
genetic introgression or
backcrosses indicating limited fitness for
hybrids and
effective reproductive isolation...
- however, not by the
above primary hybridisations, but
predominantly by
backcrosses with one of the
parental species they
coexist (live in sympatry) with...
-
Widely used as a park tree
across the
Northern Hemisphere, it
frequently backcrosses with both its parents. The 2044–2045-year-old Plat****
orientalis tree...
-
covers all
intermediate forms between the two
parent species,
including backcrosses.
Horticulturally significant forms of C. ×
media include some with double...
-
potentially helpful genes from one
species to
another when the
hybrid backcrosses with one of its
parent species, a
process called introgression. Hybrids...
-
readily form
fertile F1 hybrids, F2s, and
backcrosses, but in
natural areas of sympatry, F2s and
backcrosses are
absent or rare.
Encelia species are used...
-
evolutionary process through which inter-species
hybridization and
subsequent backcrosses yield a
plant with new
genetic combination of
nuclear and chloroplast...
