Inheritance of fertility restoration was studied in crosses involving ten elite restorer lines of rice viz. BR6839-41-5-1R, BR7013-62-1-1R, BR7011-37-1-2R, BR10R, BR11R, BR12R, BR13R, BR14R, BR15R and BR16R and one male sterile line Jin23A with WA sources of cytoplasmic male sterility. The segregation pattern for pollen fertility of F2 and BC1 populations of crosses involving Jin23A indicated t...

Ogura cytoplasmic male sterility (CMS) is one of the important methods for hybrid seed production in cruciferous crops. The lack a restorer fertility gene (Rfo) Brassica rapa L. restricts development and utilization its germplasm resources. In this research, napus with Rfo was used to restore CMS B. golden heart trait. Through distant cross two four napus, six interspecific combinations receive...

Mitochondria from the S male-sterile cytoplasm (cms-S) of maize contain two plasmid-like DNAs, S-1 and S-2, that appear to be prominently involved with the cytoplasmic male sterility trait. The complete nucleotide sequence of the S-2 DNA molecule was determined by the chain termination method. The linear S-2 DNA molecule contains 5,452 base pairs and is terminated by exact 208-base-pair inverte...

The genetic basis of male and female sterility in hybrids of Drosophila pseudoobscura-Drosophila persimilis was studied using backcross analysis. Previous studies indirectly assessed male fertility by measuring testis size; these studies concluded that male sterility results from an X chromosome-autosome imbalance. By directly scoring for the production of motile sperm, male sterility is shown ...

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...