Ongoing climatic changes have altered growing conditions for plants by limiting water availability and inducing unprecedented temperature increases, eliciting plant functional responses that compromise floral trait expression, reduce pollen production promote early self-pollination. In a controlled greenhouse study, of Collinsia heterophylla, an annual mixed-mated hermaphrodite, were grown unde...

Many rare and endemic species experience increased rates of self-fertilization and mating among close relatives as a consequence of existing in small populations within isolated habitat patches. Variability in self-compatibility among individuals within populations may reflect adaptation to local demography and genetic architecture, inbreeding, or drift. We use experimental hand-pollinations un...

BACKGROUND Co-flowering plant species frequently share pollinators. Pollinator sharing is often detrimental to one or more of these species, leading to competition for pollination. Perhaps because it offers an intriguing juxtaposition of ecological opposites - mutualism and competition - within one relatively tractable system, competition for pollination has captured the interest of ecologists ...

18 The effect of the pollination time and of the pollen origin was studied in three self-compatible 19 and late-blooming almond genotypes in order to evaluate their effect on fruit set and yield. 20 The full self-compatibility of the three genotypes was clearly assessed as fruit sets after self21 pollination were similar to those obtained after cross-pollination with pollen from two 22 differen...

The pollination of Passiflora coccinea by the hummingbird Phaethornis superciliosus was studied in Central Amazon, Brazil. We hypothesized that a greater nectar secretion rate (NSR) increases the pollination success of single flowers through Ph. superciliosus visiting behavior. For control flowers, NSR was an increasing function of flower base diameter (FBD). The total number of Ph. supercilios...

The breeding system and pollination ecology of Paeonia broteroi (Paeoniaceae), a selfcompatible, perennial herb, which produces few flowers (1-8) per season, are described in wo populations in mountains of southern Spain. Experimentally self-pollinated flowers yielded a significantly lower seed set (6-18%) than cross-pollinated flowers (23-29%), but the latter did not differ in seed set from op...

Most of the flowering plants depend on pollinators, in different degrees, for their reproduction. The degree pollinator dependence is especially important exotic because it could determine colonization success new locations. objective this study was to five entomophilous plant species a Pampean grassland located Sierra de Ventana. It determined if differences dependency are related geographic l...

Heat tolerance is important for the sustainable production of many crops, including chile pepper. Tolerance to high temperature complex and involves various component traits, with pollen viability being among most important. in vitro assays heat have been widely used pepper; however, associations between treatment pollination not explored. The objectives this study were validate utility stress ...