Flower Color of Hybrids Raised from Interspecific Crosses between Ivy-leaved Geranium (<i>Pelargonium peltatum</i> (L.) L’Hér. ex Ait.) and Related Species

Comparative recombination distances among Zea mays L. inbreds, wide crosses and interspecific hybrids.

Recombination distances and linkage heterogeneity were compared among a wide range of maize inbreds, wide crosses and maize x teosinte hybrids. Twelve maize and four teosinte races were backcrossed to stocks fixed for rare marker alleles on chromosome arm 1L. Recombination fraction estimates were higher for exotic germplasm than for either U.S. maize or maize x teosinte crosses. Serrano, Tuxpeñ...

Budding Compatibility of Almond and Plum on Some Wild Species and Interspecific Hybrids of Almond

Spatial Distribution of Flower Color Induced by Interspecific Sexual Interaction

Understanding the mechanisms shaping the spatiotemporal distribution of species has long been a central concern of ecology and evolutionary biology. Contemporary patterns of plant assemblies suggest that sexual interactions among species, i.e., reproductive interference, lead to the exclusive distributions of closely related species that share pollinators. However, the fitness consequences and ...

Interspecific Hybrids

The regulation of gene expression is essential for organismal form, function, and fitness. Complex organismal development from zygote to adult requires finely tuned expression of genes in space, time, and abundance. Proper expression of genes is also required for most other aspects of physiology and function. Even minor changes in gene expression have the potential to significantly impact pheno...

Interactions in Interspecific Crosses between Members of the Tomato Clade

One premise of the biological species concept (BSC) is that reproductive barriers act to prevent interbreeding between species. While the BSC is not universally applicable, interspecifi c reproductive barriers (IRBs) between species can be detected in many cases. For example, in the tomato clade ( Solanum sect. Lycopersicon ) prezygotic IRBs can prevent hybridization between certain species ( R...