It is not certain, however, what degree of self-fertilization
occurs in nature.
However, offspring produced through self-fertilization
inherit the DNA of their single parent, thus any parasites adapted to infect the parent also should be capable of infecting the offspring.
Because in the wind treatment, autonomous self-fertilization
and, in the diurnal and nocturnal treatments, both wind and autonomous self-fertilization
were not prevented, we calculated net production of achenes for each vector of pollen (diurnal visitors, nocturnal visitors, wind, and autonomous self-fertilization
) in the following way (Table 1): net production of achenes due to wind ([A.
In the hermaphroditic scallop Argopecten purpuratus, no differences in survival or growth were found between families produced by self-fertilization
and pair mating at either the larval or juvenile stages (Winkler & Estevez 2003).
The variation in self-fertilization
rate was attributed to the amount of eggs being liberated at the time of collection.
Similar results have previously been obtained by comparing pair-crosses between the two stocks with their self-fertilization
in this species (Zheng et al.
In the June 13 Nature, the scientists conclude that the handedness in flower orientation does indeed reduce self-fertilization
Finally, there is the question whether the reproduction of the two triploid Corbicula species involves self-fertilization
, cross-fertilization, or parthenogenesis.
Scientists had observed that polyploidy can permit self-fertilization
Sakai cautions that she was not able to perform all the standard experiments that nail down pollination details, such as excluding insects from blossoms to check for self-fertilization
Scientists studying the genes that help some kinds of mustard plants avoid self-fertilization
have new evidence that at least one of those genes helps form the shape of the much-studied Arabidopsis, also of the mustard family.
Botanists have struggled to piece together how some plants avoid self-fertilization
-- and the loss of genetic diversity that goes hand-in-hand with it -- ever since Charles Darwin noticed that some plants can fertilize themselves while others cannot.