Wild olive (O. europaea ssp cuspidata) plants grow in various regions of Iran and are expected to have considerable genetic diversity due to adaptation to the various environmental conditions. We examined the genetic diversity of four populations of wild olive growing in Hormozgan Province located in southern Iran by using 30 RAPDs and 10 ISSR markers. The mean value of polymorphism for RA...

The oriental spiny, climbing species of palms are referred to as ‘rattans’ and often are regarded as ‘green gold’ for their unique characteristics including strength, durability and flexibility. Rattans supply a basic raw material for the cane industry and are well known for their medicinal and traditional uses in basketry and bridge making. There is extensive global demand for both raw and pro...

Yams (Dioscorea spp.) constitute a staple food crop for over 100 million people in the humid and subhumid tropics. They are polyploid and vegetatively propagated. The Guinea yams, Dioscorea rotundata and D. cayenensis, are the most important yams in West and Central Africa where they are indigenous, while D. alata (referred to as water yam) is the most widely distributed species globally. The g...

Engineered nanoscale materials (ENMs) are considered emerging contaminants since they are perceived as a potential threat to the environment and the human health. The reactions of living organisms when exposed to metal nanoparticles (NPs) or NPs of different size are not well known. Very few studies on NPs-plant interactions have been published, so far. For this reason there is also great conce...

Dry mal1er content in potato (Sownum ruberosum L.) ls an Im­ portant factor in processing llIId is ~imatl,d by specific gravlty. We perfonned quantitative tfBit loci (QTL) analysis for this trait in lx potato in three environments, A population of 110 IndJviduals WItS derived from the croSiS of It hybrid ot haploid S. ruberosum (lx) lUld S. ch4coense Bitter, with II S. phureja Juz. & Bull. clon...

Onion anthracnose, caused by Colletotrichum gloeosporioides, is one of the main diseases of onions in the State of Pernambuco. We examined the pathogenicity of 15 C. gloeosporioides strains and analyzed their genetic variability using RAPDs and internal transcribed spacers (ITS) of the rDNA region. Ten of the strains were obtained from substrates and hosts other than onion, including chayote (S...

We examined the fitness characters in parasexual recombinants derived from cocultures of two isolates, NAO-02 (race 133.1) and TH77-1 (race 047.0), of the rice blast fungus, Pyricularia oryzae, in liquid yeast extract medium. The cocultured isolates were transferred to oatmeal agar to produce a conidial inoculum. Then, the conidial suspension was sprayed on the japonica rice cultivar Akiyutaka,...

The evolution of microsatellites was studied within and between the pine species. Sequences showed that microsatellites do not necessarily mutate in a stepwise fashion and that size homoplasy is common due to flanking sequence and repeat area changes within and between the species. Thus, some assumptions of statistical methods based on changes in repeat numbers may not hold. Sequences from cros...

OBJECTIVE To quantify the amount of optic nerve axonal loss associated with the presence of a mild relative afferent pupillary defect (RAPD) in an experimental monkey model. METHODS The right macula of 5 rhesus monkeys (Macaca mulatta) was treated with concentrically enlarging diode laser burns until an RAPD was detected using a transilluminator light and measured with neutral density filters...