H. El Mokadem

Learn More
Haploidisation by in situ parthenogenesis of 4x R. hybrida resulted in the production of some dihaploid roses (2n=2x=14) able to produce viable pollen. A cytological study of microsporogenesis revealed that, although the first meiotic reductional division occurred normally, the second (equational) division was characterised by frequent abnormalities which(More)
We report a familial case of Waardenburg syndrome. A four and a half year old boy had displacement of the canthi, a white forelock, perceptive deafness, and a congenital heart defect. The mother and younger brother had the same syndrome. Usually, cases of Waardenburg syndrome are divided into types I and II according to whether lateral displacement of the(More)
Dihaploid derivatives of 4x Rosa hybrida L. obtained through parthenogenesis induced by irradiated pollen significantly produce 2n eggs,often accompanied by gametes with higher ploidy levels (3x and 4x). The gamete ploidy level distribution depends on the originating genotype. The ploidy level of the male parent affects the maternal /paternal ratio in the(More)
  • 1