Defensive traits exhibited by plants vary widely across populations. Heritable phenotypic differentiation is likely to be produced by genetic drift and spatially restricted gene flow between populations. However, spatially variable selection exerted by herbivores may also give rise to differences among populations. To explore to what extent these factors promote the among-population differentia...

Study of genetic relationships is a prerequisite for plant breeding activities as well as for conservation of genetic resources. In the present study, genetic diversity among and within 15 Iranian native Ajowan(Carum copticum L.) populations were determined using inter simple sequence repeat (ISSR) markers. Twelve selected primers produced 153 discernible bands, with 93 (60.78%) being ...

Anthropogenic landscapes influence evolutionary processes such as population genetic differentiation, however, not every type of landscape features exert the same effect on a species, hence it is necessary to estimate their relative effect for species management and conservation. Przewalski's gazelle (Procapra przewalskii), which inhabits a human-altered area on Qinghai-Tibet Plateau, is one of...

Abstract Data on genetic diversity and differentiation, as well kinship between individuals, are important for the conservation of animal plant resources. Often assignment is part law enforcement protected endangered species. The software GDA-NT 2021 a new, freely available user-friendly Windows program that can be used to compute various measures population differentiation. It further allows i...

in this study, srap molecular maker approach was performed to investigate genetic diversity in the salvia genus. a total of 205 dna bands were produced from pcr amplification of 11 salvia species and populations using 25 selective primer combinations, of which 204 polymorphic genetic loci accounted. the total number of amplified fragments ranged from 3 to 15. the genetic similarities of 11 coll...

_______________________________________________________________________________________ Abstract Three commercial and three indigenous goat populations from South Africa were studied for genetic variation using ten microsatellite markers. Heterozygosity values of between 0.62 and 0.69 were obtained for the populations, except for the SA Boer Goat, which had the lowest variation (0.49). Genetic ...

The seagrass Zostera marina is widely distributed in coastal regions throughout much of the northern hemisphere, forms the foundation of an important ecological habitat, and is suffering population declines. Studies in the Atlantic and Pacific oceans indicate that the degree of population genetic differentiation is location dependent. San Francisco Bay, California, USA, is a high-current, high-...

Patterns of isolation-by-distance (IBD) arise when population differentiation increases with increasing geographic distances. Patterns of IBD are usually caused by local spatial dispersal, which explains why differences of allele frequencies between populations accumulate with distance. However, spatial variations of demographic parameters such as migration rate or population density can genera...