Induced Polyploid Grapes via in vitro Chromosome Doubling.

Chromosome pairing in polyploid cells.

The homologues in polyploid metaphases of air-dried suspensions of cultured cells are usually seen closely paired as diplochromosomes ("endore duplicated" cells) or unpaired as randomly distributed chromosomes ("poly ploid" cells). More often we find another configuration, a mixture of paired and unpaired chromosomes in the same metaphase, and describe here the conditions under which it appears...

Competitiveness via Doubling

It is not easy to formulate a precise, yet also general and elegant description of this method. In this expositary paper, we illustrate this method by discussing several applications where doubling is used, and these examples should be sufficient to elucidate the underlying idea. (This is not meant to be a comprehensive survey; we suspect that there are many more examples of doubling-based appr...

Chromosome counts in a polyploid series of Saccharomyces.

Direct determination of chromosome number in Saccharomyces is advantageous in the further development of yeast genetics. The enumeration of centromeres by deductions from tetrad analysis sets a minimum chromosome number (Lindegren, 1949; Lindegren and Lindegren, 1951b), but interchromosomal linkage (Shult and Lindegren, 1955) introduces complexities into the deduction of chromosomal numbers fro...

In Vitro Chromosome Breakage Induced by Arabinosyladenine in Human Leukocytes.

P-22: Protective Effect of Grapes SeedHydroalcholic Extract against Fluoxetine-Induced Fertility Toxicity in Male Mice

Background: Fluoxetine, a selective serotonin reuptake inhibitor, has been prescribed for the treatment of depression and has shown also efficacy in the treatment of bulimia nervosa and obsessive-compulsive disorder. Grape seed extract is a natural extract from the seeds of graps. It contains the most beneficial groups of plant flavonoids, proanthocyanidins oligomers. These flavonoids are poten...