haploid microspore-derived embryos (mdes) of wheat were obtained by in vitro androgenesis. these  embryos were employed to evaluate the transient expression of gus gene (uida) following particle bombardment. using the bio-rad pds-1000/he system, the physical parameters including rupture disk pressure (900, 1100 and 1350 psi); microprojectile travel distance (6 and 9 cm); gold particles size (0....

During in vitro embryo production, chromosome screening is essential to prevent pregnancy losses caused by embryonic chromosome aberrations. When the chromosome screening is completed before fertilization, gametes are effectively utilized as genetic resources. The aim of this study was to investigate whether chromosome screening of gametes accompanied by fertilization would be feasible using a ...

In vivo (leaves and seed embryos) and in vitro (androgenic embryos) antioxidant scavenging activity of Aesculus hippocastanum and Aesculus flava medical plants was examined. Here we report antioxidant enzyme activities of superoxide dismutase, catalase, guaiacol peroxidase and glutathione peroxidase, reduced glutathione quantity, flavonoids, soluble protein contents, quantities of malondialdehy...

So far there is no information about receiving red beet androgenic embryos by androgenesis. Several factors were tested which affected this process: starch accumulation in microspores, correlation between bud length and microsporogenesis course, induction and regeneration medium composition. Ploidy level of obtained regenerants were evaluated. Treating anthers with α-amylase or watering donor p...

Recurrent hydatidiform mole is defined as episodes of two molar pregnancies in a female. Often, complete moles onlyderive androgenic nuclear genome. We described two cases with repeated molar pregnancies attempted to preventfuture episodes by performing intracytoplasmic sperm injection (ICSI) and preimplantation genetic diagnosis (PGD)to assess genetic disorders. The first pat...

Anther culture technique is one of the commonly used method in order to obtain haploid plants eggplant. It known that androgenic response eggplant variable and most important factors determining success genotype effect. Low or insufficient embryogenic limits use double technology breeding programs. Therefore, responses genotypes a step for this studies. In study, 61 at various stages (F1, F2, F...

Androgenic hormones induce inhibition or regression of the bursa of Fabricius in the chick embryo. The high doses of hormones necessary to this involution raises the question of the processes involved and their putative role in the normal development of the bursa. If androgens play a role it is mediated by receptor sites in target cells. Using an autoradiographic technique, receptor sites for a...

Head cabbage androgenic genotypes of R1 and R2 generations derived from Jaguar F1 donor hybrid were evaluated according to their agroeconomical characters, ability for generative propagation, self-incompatibility, intraline uniformity and stability of morphological characters. Most of R1 and R2 genotypes had desired morphological characters. However, in R1 generation 21 lines showed lack of int...