0]), because the absolute siring success of both outcross and geitonogamous pollen on emasculated flowers will be higher without competition from autogamous
seeds were not evaluated as so few were produced.
However, in these species outcrossing may be able to reach levels similar to other autogamous
species like wheat.
crosses (n = 58) produced less than 2% fruit set overall.
The hermaphrodite papaya plant can be either autogamous
This may be explained by the hypothesis that selfing arose in conjunction with past hybridization of separate taxa and chromosome doubling in the hybrid progeny; that is, if this scenario is correct, only the autogamous
breakdown products of the hybrid distylous parents would have been capable of producing offspring.
belonging to the ecotype 'Coqueiro Anao' was used in this study due to its autogamous
reproduction, with low heterogeneity among zygotic embryos.
In these Ipomoea, autogamous
pollen grains may be deposited on the stigma before or shortly after anthesis begins.
This result agreed with those obtained in other autogamous
crops such as wheat (Kim and Ward, 1997), barley (Graner et al.
and pollination modes (trochilophilous, chiropterophilous, entomophilous, autogamous
, unspecific), is particularly well suited for studying the relationship of such species attributes to range size.
A likely consequence of this foraging behavior is a high level of self-pollination (whether autogamous
or geitonogamous, Gomez and Zamora 1996), a common feature noted for other mass-flowering species (Augspurger 1980, Stephenson 1982, Frankie and Haber 1983, Harder and Barrett 1995, Snow et al.
In one of these two populations, we also compare levels of inbreeding depression in families that differ in their autogamous
seed-set in a pollinator-free environment.