Cytoplasmic male sterility (CMS) is a widespread phenomenon in higher plants, and several studies have established that this maternally inherited defect is often associated with a mitochondrial mutant. Approximately 10 chimeric genes have been identified as being associated with corresponding CMS systems in the family Brassicaceae, but there is little direct evidence that these genes cause male...

In sorghum [Sorghum bicolor (L.) Moench], development of male-sterile versions (A-lines) the seed parents (B-lines) is a tedious and time-consuming process limiting opportunities for improvement new parents. Assessment value potential parent requires testcross hybrid evaluations, but because male fertility these lines, conventional methods are inadequate to generate required testing. Mechanisms...

RTIFICIAL mixtures of mitochondria from various unrelated inbred lines A of maize exhibit oxidative and phosphorylative activities which correspond to the activities of mitochondria of hybrids of these lines ( SARKISSIAN and SRI~ASTAVA 1967; MCDANIEL and SARKISSIAN 1968). This phenomenon has been called mitochondrial complementation (MCDANIEL and SARKISSIAN 1966). Complementation reflects dissi...

Though cytoplasmic male sterility (CMS) in peppers is associated with the orf507 gene, definitive and direct evidence that it directly causes male sterility is still lacking. In this study, differences in histochemical localization of anther cytochrome c oxidase between the pepper CMS line and maintainer line were observed mainly in the tapetal cells and tapetal membrane. Inducible and specific...

Pigeonpea [Cajanus cajan (L.) Millsp.] is a unique food legume because of its partial (20-30%) outcrossing nature, which provides an opportunity to breed commercial hybrids. To achieve this, it is essential to have a stable male-sterility system. This paper reports the selection of a cytoplasmic-nuclear male-sterility (CMS) system derived from an interspecific cross between a wild relative of p...

In crosses between evolutionarily diverged populations, genomic incompatibilities may result in sterile hybrids, indicating evolution of reproductive isolation. In several plant families, crosses within a population can also lead to male sterile progeny because of conflict between the maternally and biparentally inherited genomes. We examined hybrid fertility between subspecies of the perennial...

Abstract Background Cytoplasmic male sterility (CMS) is a trait associated with non-functional pollen or anthers, caused by the interaction between mitochondrial and nuclear genes. Findings A Tadukan-type CMS line (TAA) restorer (TAR) were obtained successive backcrossing Oryza sativa cultivars Tadukan (a cytoplasmic donor) Taichung 65 recurrent parent). Using Illumina HiSeq, we determined whol...

Some genetic elements spread infectiously in populations by increasing their rate of genetic transmission at the expense of other genes in the genome. These so-called selfish genetic elements comprise a substantial portion of eukaryotic genomes and have long been viewed as a potent evolutionary force. Despite this view, little is known about the evolutionary history of selfish genetic elements ...

One of the prior directions in modern rapeseed breeding is making heterotic hybrids. Seed production most hybrids F1 used are often carried out by two types cytoplasmic male sterility, there Polima and Ogura. At All-Russian Rapeseed Research Institute, fertility restorers on sterile cytoplasm were made estimated for main valuable characteristics biochemical properties. The purpose study was to ...