نتایج جستجو برای: genetic similarity and population
تعداد نتایج: 16973171 فیلتر نتایج به سال:
Paecilomyces variotii is one of the most important causal agents of dieback disease in pistachio (Pistacia vera) gardens. The disease affects different parts of the tree, such as branch and trunk. Assessment of genetic structure in different populations of this species will lead to more useful management of pistachio dieback disease. In this study, genetic variation within samples of P. varioti...
the purpose of this study was to investigate how english language teachers in mashhad who teach students in the pre-university cycle perceived the impact of the efltee on their teaching. the target population was nearly all pre-university english language teachers in seven districts of mashhad in the scholastic year 2008/2009. a survey questionnaire which consisted of (36) likert type items, wa...
Abstract Determination of genetic diversity level is important in clarifying genetic relationships, characterizing germplasm and the registration of new cultivars. In this study, genetic variation among 56 accessions (G1~G56) of Citrus including several undefined local or native genotypes and some known varieties in Jiroft, Kerman province, Iran was investigated using SSR markers. In total, 12 ...
genetic diversity assessment of some sour and duke cherry genotypes and cultivars using rapd markers
rapd markers were employed to determine the diversity among 29 genotypes and cultivars of sour and duke cherry as well as a mahaleb tree genotype as an outgroup. a number of 100 random primers were examined for pcr reactions on the template dnas extracted from leaves, of which 17 primers produced polymorphic bands. these 17 selected rapd primers produced 233 bands, among which, 214 were polymor...
macrophomina phaseolina is a soilborne pathogen with a worldwide distribution and a host range of over 500 plant species. to study the genetic diversity and host specialization of this fungus in iran, plants with signs and symptoms of charcoal rot were collected from 12 provinces during years 2006 to 2008. following isolation and purification, 52 isolates from 24 host plants were identified thr...
abstract nowadays, industries cannot play a crucial role in national and international competitions. the tourism industry is no exception. tourism industry development as the most important economic sector and income generation is one of the key challenges of economic development in the world. therefore, countries were successful that take advantage of the capabilities of tourism sector using ...
abstract the current study sets out 1) to investigate the strategic needs of iranian efl learners in reading literary and non-literary texts; 2) to shed some light on the differences between reading literary and non-literary texts; and 3) to specify the differences in the interaction of participants with texts while reading two literary subgenres ( i.e., short story and literary essays). to ...
jujube (ziziphus jujuba mill.) is a valuable medicinal plant which is important in iranian traditional medicines. although the regional plants such as jujube play an important role in our economy, but they are forgotten in research and technology. considering the economic and medicinal importance of jujube, the first step in breeding programs is determination of the genetic diversity among the ...
The study of genetic variation and phylogenetic relationships is essential for the efficient selection of superior plant material and conducting introgression breeding programs. In Iran, despite the wide geographical distribution of grasses no report is available on the genetic diversity and relationships of cool season grass populations. In this study amplified fragment length polymorphism (AF...
Genetic diversity estimation of plant materials is one of the important pre-breeding activities in breeding field crops. Twenty-one microsatellite markers used to assess genetic diversity and relationship of 68 sunflower genotypes (Helianthus annuus L.). All of 21 pairs of SSR (Simple Sequence Repeats) markers produced a total number of 49 polymorphic bands. DNA fragments ranged from 9...
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