four saudi arabian indigenous sheep populations including najdi, hbsi, arb, and naemi were genotyped for 16 microsatellite markers recommended by the food and agriculture organization (fao). this study aims to provide information on the genetic structure of the breeds analyzed and give indications and proposals for the cross breeding program. all loci were polymorphic in all populations and loc...

According to the ratchet mechanism hypothesis, deleterious mutations should accumulate in clonal genomes of unisexual fish of the genus Poeciliopsis. This study defines one such mutant, a silent carboxylesterase allele (ES-5 degrees) which is found in the heterozygous condition in a particular population of P. monacha-occidentalis. An antiserum to purified Poeciliopsis carboxylesterase cross-re...

The term diallel is a Greek word and implies all possible crosses among a collection of male and female animals. Hayman (1954a, 1954b) defined diallel cross as the set of all possible crosses between several genotypes, which may be individuals, clones, homozygous lines, etc. Diallel cross is most balanced and systematic experiment to examine continuous variation. The genetic information related...

Irradiation for phytosanitary purposes. Is it a myth, or a viable alternative to chemical treatments? Plant mutation breeding at Southern Cross University-irradiation and how it relates to other technologies 1345 Michael Colella, ANSTO The contribution of gamma irradiation to forensic counter-terrorism research activities 1400 Yoichi Furuya, ANU Gamma-ray inactivated influenza A virus vaccine f...

Long-lived migratory animals must balance the cost of current reproduction with their own condition ahead of a challenging migration and future reproduction. In these species, carry-over effects, which occur when events in one season affect the outcome of the subsequent season, may be particularly exacerbated. However, how carry-over effects influence future breeding outcomes and whether (and h...

IDC in soybean has been improved through conventional breeding approaches (Cianzio, 1991; Cianzio and Soybean [Glycine max. (L.) Merr.] breeders have improved resisVoss, 1994; Hintz et al., 1987), IDC-resistant lines may tance to iron-deficiency chlorosis (IDC) using conventional breeding have lower yield potential than IDC-susceptible cultiapproaches; however, many IDC-resistant cultivars have...

pedigree/bulk method (MODPED) (van Ginkel et al., 2002), which successfully produced many of the widely Breeding strategies used by plant breeders are many and varied, adapted wheats now being grown in the developing making it difficult to compare efficiencies of different breeding strateworld. This method was replaced in the late 1990s by gies through field experimentation. The objective of th...

the identification of molecular markers linked to leaf curl virus (clcuv) disease resistance in cotton has the potential to improve both the efficiency and the efficacy of selection in cotton breeding programs. genetic analysis suggested that clcuv resistance is controlled by a single dominant gene. in this study, an interspecific f2 population derived from a cross of gossypium barbadense and g...