HIGHLIGHTS Gynogenesis didn’t have significant effect on Caspian salmon immunological indices. weren’t any blood chemical Hematological indices show changes by gynogenesis. Growth characteristics were improved gynogenesis in fish.

Gynogenesis is a process in which the embryo genome originates exclusively from female origin, following embryogenesis stimulation by a male gamete. In contrast, androgenesis is the development of embryos that contain only the male nuclear genetic background. Both phenomena are of great interest in plant breeding as haploidization is an efficient tool to reduce the length of breeding schemes to...

There are many ways to genetically modify fish including inbreeding, gynogenesis, androgenesis, selection, intraspecific crossbreeding, interspecific hybridization, polyploidy, sex reversal and breeding, nuclear transplantation and transgenesis. Cloned populations have been produced via gynogenesis and androgenesis (Dunham 2004 in press), but direct cloning of an individual fish of interest has...

In order to increase the yield of haploid cucumber plants obtained from in vitro culture of unpollinated ovules, anther and microspore, we have studied several factors: the nature and concentration of plant growth regulators, the genotypes, the flower bud lengths, and the stages of microspore development. Among the different growth regulators tested, thidiazuron (TDZ) was the best for gynogenes...

The use of doubled haploids in onion breeding is limited due to the low gynogenesis efficiency of this species. Gynogenesis capacity from Spanish germplasm, including the sweet cultivar Fuentes de Ebro, the highly pungent landrace BGHZ1354 and the two Valenciana type commercial varieties Recas and Rita, was evaluated and optimized in this study. The OH-1 population, characterized by a high gyno...

Unisexual polyploid vertebrates are commonly known to reproduce by gynogenesis, parthenogenesis, or hybridogenesis. One clone of polyploid Carassius gibelio has been revealed to possess multiple modes of unisexual gynogenesis and sexual reproduction, but the cytological and developmental mechanisms have remained unknown. In this study, normal meiosis completion was firstly confirmed by spindle ...

in order to investigate the effect of two spermidine concentrations (0.5 and 1 µ m ) on in vitro gynogenesis of six onion accessions from khorasan province this research was carried out. results showed that the highest and lowest percentage of gynogenesis rate was belonged to m2 and m5 media, respectively. the highest (1.41) and lowest (0.33) percentage of gynogenic embryo were belonged to rosh...

Sporadic diploid gynogenetic fry resulted from fertilization with y-irradiated sperm. Their frequency increased appreciably when thermal shock treatments, beginning during the first hour of development (―0.4 OC lasting 6 hrs 45 min ; 26-30 °C lasting 10 min), were used. When the eggs were fertilized with normal sperm, a good triploidization rate was induced by means of heat shocks (27-30...