although abo incompatibility between mother and fetus has long been suspected as cause of spontaneous abortion in man, its precise contribution has not been completely resolved. in spite of reports in which the incompatible mating was recognized to be a cause of habitual abortion, and which eventually results in infertility or a reduction in the number of living children compared with the numbe...

Maternally inherited variants, which arose within a laboratory colony of Culex pipiens fatigans, have been studied by rearing cultures from single egg rafts. Segregation, i.e, variation of cytoplasmic incompatibility properties between the male progeny of individual females, was demonstrated. Also, from the daughters of individual females, sub-lines were derived within which all the males showe...

Self-incompatibility is considered to be a growth limiting factor in fruit plants. In species with hermaphrodite flowers, S-locus (S-allele) has been accepted control self-incompatibility, and the genetic of this locus provided by multiple genes (alleles). Pear (Pyrus communis L.) belongs Pomoideae from Rosaceae family found have great potential terms ecological features Turkey. To protect thes...