F(1) hybrid male sterility is thought to result from interactions between loci on the X chromosome and dominant-acting loci on the autosomes. While X-linked loci that contribute to hybrid male sterility have been precisely localized in many animal taxa, their dominant autosomal interactors have been more difficult to localize precisely and/or have been shown to be of relatively smaller effect. ...

Cytoplasmic male sterility (CMS) where no functional pollen is produced has important roles in wheat breeding. The anther is a unique organ for male gametogenesis and its abnormal development can cause male sterility. However, the mechanisms and regulatory networks related to plant male sterility are poorly understood. In this study, we conducted comparative analyses using isobaric tags for rel...

Sterility testing as described in the pharmacopoeia compendia requires a 14-day incubation period to obtain an analytical result. Alternative methods that could be applied to evaluating product sterility are especially interesting due to the possibility of reducing this incubation period and thus the associated costs. The aims of this study were to evaluate the performance of the BacT/ALERT(R) ...

YTOPLASMICALLY conditioned pollen sterility occurs rather frequently in plants. Usually, the character “pollen sterility” is produced when a particular cytoplasm is combined with a recessive gene in homozygous condition in the same plant. The best investigated example is the pollen sterility in corn (reviewed by DUVICK 1965), but similar conditions have been described in a large number of plant...

Functional male sterility in tomato (Solanum lycopersicum L.) positional sterile ps and ps-2 lines provides a good facultative sterility system for F1 hybrid seed production. In order to elucidate the observed variability in the trait stability, expressivity was observed in a comparative multi-year study (2008 – 2012) across seven ps and two ps-2 tomato lines. Tomato lines undergoing the study ...

Hybrid dysfunction, a common feature of reproductive barriers between species, is often caused by negative epistasis between loci ("Dobzhansky-Muller incompatibilities"). The nature and complexity of hybrid incompatibilities remain poorly understood because identifying interacting loci that affect complex phenotypes is difficult. With subspecies in the early stages of speciation, an array of ge...