Observation of metaphasic chromosomes in dormant barley seeds.

Radiation sensitivity of dormant and germinating barley seeds.

Radiationi Sensitivity of Dormant and Germinating Barley Seeds: C. F. Konzak .197 Methylamine Complexes of Yttrium Chloride: W. W. Wendlandt . 197 Frenquel Corrects Certain Cerebral Electrographic Changes: F. Rinaldi and H. E. Himwich ..................................... Influence of Calcium on Mobility of the Electrophoretic Components of Chicken Blood Serums: A. T. Ericson, R. E. Clegg, R. E...

Comparison of Effects of X-Rays and Thermal Neutrons on Dormant Seeds of Barley, Maize, Mustard, and Safflower.

Search for endophytic diazotrophs in barley seeds

Eight endophytic isolates assigned to Pseudomonas, Azospirillum, and Bacillus genera according to pheno-genotypic features were retrieved from barley seeds under selective pressure for nitrogen-fixers. Genetic relationships among related isolates were investigated through RAPD. Six isolates displayed nitrogen-fixing ability, while all could biosynthesize indolacetic acid in vitro and showed no ...

Effect of age on germination of dormant seeds.

Dormant seeds in permanent soil seed banks change their germination probability with age, but little is known about the causes of this behavior. Since current adaptive models do not consider the age structure of the seed bank, the sole explanation is that changes in germination probability with age are due to passive accidental factors or to decay of seeds. Here we present a theory, which shows...

Cryopreservation of dormant European ash (Fraxinus excelsior) orthodox seeds.

We investigated the sensitivity of dormant Polish-provenance Fraxinus excelsior L. seeds to extreme desiccation and liquid nitrogen (LN, -196 degrees C). Germination and seedling emergence tests revealed that the critical water content (WC) of the desiccated seeds was 0.04-0.06 g H(2)O g(-1) dry mass, g g(-1) (0.04 g g(-1) in the germination test and 0.06 g g(-1) in the seedling emergence test)...