Reproductive characterization of interspecific hybrids
among Capsicum species
http://www.sbmp.org.br/cbab/siscbab/uploads/bd532918-fc44-ea29.pdf
C. annuum and C. baccatum are considered species
belonging to different gene complexes in view of the
crossability.
However, fertile hybrids were obtained
between the species C. annuum var. annuum (sweet or
hot pepper) and C. baccatum var pendulum with pollen
viability exceeding 90 % (Table 4).
On the other hand, the viability of the reciprocal combinations was low, around
35 %, and combinations between C. baccatum var. baccatum
x C. annuum var. annuum resulted in hybrids with very
low fertility as well (Table 5), with an average 35 % of
viable pollen grains. C. annuum and C. baccatum belong
to different gene complexes, and the results reported here
were not expected.
An interesting observation was the high
pollen viability when C. annuum was used as female
parent, since the pollen viability of such combinations
was high. According to Shifriss (1997), hybrids between
C. annuum and C. baccatum have varying degrees of male
sterility, according to the
. . .
In conclusion, some combinations are possible and
fertile, enabling the gene transference between species,
whereas the fertility degree of other combinations can differ,
indicating partial or complete male sterility, assessed here
based on the pollen viability.
The conclusion was also
drawn that infertility is a postfertilization barrier since the
establishment of hybrid combinations is possible, but
breeders will have to apply strategies as described by Yoon
et al. (2006), to continue the breeding program of Capsicum.
among Capsicum species
http://www.sbmp.org.br/cbab/siscbab/uploads/bd532918-fc44-ea29.pdf
C. annuum and C. baccatum are considered species
belonging to different gene complexes in view of the
crossability.
However, fertile hybrids were obtained
between the species C. annuum var. annuum (sweet or
hot pepper) and C. baccatum var pendulum with pollen
viability exceeding 90 % (Table 4).
On the other hand, the viability of the reciprocal combinations was low, around
35 %, and combinations between C. baccatum var. baccatum
x C. annuum var. annuum resulted in hybrids with very
low fertility as well (Table 5), with an average 35 % of
viable pollen grains. C. annuum and C. baccatum belong
to different gene complexes, and the results reported here
were not expected.
An interesting observation was the high
pollen viability when C. annuum was used as female
parent, since the pollen viability of such combinations
was high. According to Shifriss (1997), hybrids between
C. annuum and C. baccatum have varying degrees of male
sterility, according to the
. . .
In conclusion, some combinations are possible and
fertile, enabling the gene transference between species,
whereas the fertility degree of other combinations can differ,
indicating partial or complete male sterility, assessed here
based on the pollen viability.
The conclusion was also
drawn that infertility is a postfertilization barrier since the
establishment of hybrid combinations is possible, but
breeders will have to apply strategies as described by Yoon
et al. (2006), to continue the breeding program of Capsicum.
