to study the inheritance of drought tolerance in traits in bread wheat, 7 cultivars of bread wheat with their f1 progeny produced through a half diallel mating design, were planted in a randomized complete block design with 3 replications in normal and drought condition in seed and plant improvement institute karaj, in year 2004. analysis of variance showed significant difference for all the tr...

We rapidly produced and isolated novel yeast hybrids by using two-color flow cytometric cell sorting. We labeled one parent strain with a fluorescent green stain and the other parent with a fluorescent orange stain, and hybrids were selected based on their dual orange and green fluorescence. When this technique was applied to the production of hybrids by traditional mating procedures, more than...

Colonies of Schizosaccharomyces pombe that contain ascospores (e.g., colonies of homothallic strains) turn black after treatment with iodine vapors. Heterothallic strains of S. pombe normally do not show this reaction. In experiments with the latter strains we found mutants which exhibit a positive iodine reaction though they do not contain ascospores. This phenotype is due to mutations in a ne...

Different evolutionary perspectives offer competing views on short-term mating and attachment. Some theories argue that short-term mating results from insecure attachment, particularly the maladaptive attachment features of low self-esteem, interpersonal distrust, social avoidance, and emotional instability. Other theories posit that short-term mating is adaptive, having evolved as an ecologica...

Mating systems involving male territorial defence are usually characterized based on categorical characteristics (Emlen & Oring 1977), for instance the number of mates per male or per female, the presence of resources within territories, the spatial distribution of neighbouring territories, whether male territories include female territories and how many, or the purpose of female visits at terr...

We studied the dominance of the effects of chromosomes carrying unselected mutations on five life-history traits in Drosophila melanogaster. Mutations were accumulated on the second chromosome for 44 generations in the absence of natural selection. Traits studied were female fecundity early and late in adult life, male mating ability, and male and female longevity. Homozygous effects were estim...

Optimization using genetic algorithms (GA) is a well-known strategy in several scientific disciplines. The crossover an essential operator of the algorithm. It has been active area research to develop sustainable forms for this operand. In work, new operand proposed. This depends on giving elicited description chromosome with structure alleles parents. suggested that each allele two attitudes, ...

Variation present in vegetables provides plentiful of opportunity for development breeding lines and hybrids. Germplasm depends on incorporation approaches such as MAGIC population, use wild relatives, genetic transformation transferring resistance gene pyramiding. These are most reliable to improve qualitative well quantitative characters. Since conventional methods time consuming, molecular t...