5% of the species) suggest a high incidence of self-compatibility
and autonomous self-pollination (reviewed by Matallana et al.
3) Do levels of self-compatibility
differ between diploids and tetraploids and does the species produce seed autonomously?
Among the topics are the molecular evolution and breeding consequences of self-compatibility
and its absence in Prunus fruit trees, marker-assisted breeding for resistance to common bacterial blight in common bean, joint regression analysis and completed joint regression analysis, breeding for reaction, genotype-by-environment interaction and selection of high yielding stable cultivars, and morphological differentiation of sepal and petal in Habenaria radiata (Orchidceae).
Any seeds that resulted from this treatment would be the result of intrafloral self-pollination and would confirm self-compatibility
The inhibition of pollen tubes in an incompatible style can occur one to several hours after pollen germination (Nettancourt, 1977) and the expression of self-incompatibility is so strong that almost all of the pollen tubes failed to reach the base of the style (Adachi, 1990), Self-compatibility
is expressed by homostylic flowers in Fagopyrum, with styles and stamens of the same height.
In particular, is self-compatibility
the ancestral or derived condition among tristylous species?
Even though self-compatibility
is a very specific phenomenon and restricted to a very specific subset of plants, the genes have been recruited from genes that have a very different function," Nasrallah concludes.
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.
Self-incompatibility systems are often "leaky," and partial self-compatibility
is seen in many species that are considered to have self-incompatibility systems (Lloyd and Schoen, 1992; Levin, 1996).
Then, on 12 plants randomly chosen from the 30 representatives of each generation, we measured a suite of reproductive characters including self-compatibility
, cross-compatibility, anther-stigma proximity, corolla tube length, level of automatic self-pollination, seed-set from automatic self-pollination (autogamy), level of anther indehiscence (P.
One in 20 plants tested for selffertility set seed in the greenhouse, presumably due to pseudo self-compatibility
Asexual reproduction, self-compatibility
, and autonomous self-pollination (autogamy, the ability to self-fertilize in the absence of pollinators) enable plants to reproduce when outcrossing is disadvantageous, difficult or impossible (Lloyd and Schoen, 1992).