Thus far,
self-compatibility and selfpollination has been documented in six Pitcairnia species (Wendt, Canela, de Faria, & Rios, 2001; Wendt, Canela, Klein, & Rios, 2002; Fumero-Caban & Melendez-Ackerman, 2007; Bush & Guilbeau, 2009).
While 40% of the plants tested for autogamy produced at least one fruit and 31 % showed evidence of
self-compatibility, total fruits produced in either set of crosses was low.
Zhuang, "Insertion mutation of pollen SFB gene in
self-compatibility of Japanese apricot cultivars native to China," Acta Horticulturae Sinica, vol.
Hoshikawa et al., "Characterization of fruiting and pollen tube growth of apple autotetraploid cultivars showing
self-compatibility," Journal of the Japanese Society for Horticultural Science, vol.
Self-compatibility may be responsible for a higher production of fruit in natural conditions caused by the process of automatic self-pollination in B.
While hand-pollinations would have been the most straightforward way of testing
self-compatibility, it proved to be too difficult to make these manipulations accurately under field conditions.
However, postzygotic inviability could result from either inbreeding depression or late-acting
self-compatibility or even a combination of the two processes.
Self-compatibility and autonomous self-fertilization.--To determine whether Galax is self-compatible and whether the degree of
self-compatibility differs between cytotypes, we self-pollinated flowers on six plants in single cytotype populations and three diploid and three tetraploid plants in mixed cytotype populations.
Self-compatibility index (SCI) was estimated by dividing the number of fruits or seeds produced in self-pollinated (SP) flowers by the number of fruits or seeds from cross-pollinated (CP) flowers.
THE GENUS Fagopyrum is composed of 18 species (Ohsako et al., 2001) and contains both diploid (2n = 2x = 16) and tetraploid (2n = 4x = 32) forms, with two breeding systems, self-incompatibility and
self-compatibility. The predominant system in Fagopyrum, self-incompatibility, was first discovered by Darwin (1877) and belongs to the sporophytic system (Dahlgren, 1922) expressed in the pin and thrum flower type.
In particular, is
self-compatibility the ancestral or derived condition among tristylous species?
The study's purpose was to determine the pollinators, degree of
self-compatibility, and degree of pollen limitation for E.