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The purpose of the present research was to study the properties of natural habitats and growth status of the genus Tamarix in Miankangi, Sistan Province, South-eastern Iran. Selective sampling was used to examine the natural stands structure. Then, the one ha-rectangular sample plots were stablished in the stands and surrounding bare lands as control plots. Quantitative variables of stands viz. collar diameter, total height, canopy surface and density in the plots were recorded. In each plot, the soil sampling was carried out from 0-30 and 31-60 cm depths, and some physicochemical parameters of the soil including soil texture, pH, EC, SP, OC, total N, available P, K, Na, Ca and Mg were measured. Data were analyzed using one-way ANOVA. The Duncan's test was used to compare the means. The soil texture of the region was loamy-silty and clay-sandy-loamy. The soil of Tamarix habitats was saline and alkaline. The results showed that the growth variables were different among the habitats. In addition, the soil clay and silt, pH, potassium and sodium absorption ratio (SAR) were significantly different among the habitats and the control. Correlation between vegetation and soil properties also showed that the diameter of Tamarix trees had positively correlated with the soil SP at also the first depth and with the clay viriable at the second depth. 

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The present descriptive-analytic paper aims to investigate the distribution of the sentential negative marker in yes-no questions in Dashtestani dialect. As well as adhering to the beginning of the tensed main verbs and tensed auxiliary verbs in this dialect, the sentential negative marker is used immediately before the phrasal complements as well as the beginning of the negative yes-no questions. Relying on some theoretical and cross-linguistic pieces of evidence, the study examines the mechanisms beyond the optional behavior of this marker, together with its distribution in the hierarchy of the yes-no questions within the framework of the Minimalist Program. The findings of the study showed that the sentential negative marker is considered a ‘negative prefix’ in the position immediately preceding the tensed main verb as well as auxiliary verbs, and a ‘negative particle’ before the phrasal complements, each of them being generated in a different position. Consequently, in yes-no questions, the negative marker as a negative particle moves to the head of CP, satisfying, in this way, the Negative Criterion and yielding an interrogative interpretation. Lack of such a movement, on the contrary, renders the sentence ungrammatical.
 
 

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Comparative study of critical theories of contemporary Arab and Iranian poets can have a unique part in literary analysis. In general, new poetic critical theories are under the influence of the intellectual origins of contemporary German and French philosophies. Adonis and Shafiei Kadkani are two influential critic poets who have discussed poetic concepts and components in their critical articles and books with specific tact. The present study was a descriptive-analytical investigation into analyzing critical views of these two poets based on American school of comparative approach in the fields of definition of poetry, and language and music of poetry. The results of the study showed that the two critics have common intellectual foundations; therefore, they have some similar critical viewpoints. However, their critical approaches are different in terms of both methodology and intellectual depth. Compared to Shafiei Kadkani, Adonis has a deeper, more organized, and more daring view toward poetic categories and poetic language.

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Van Leeuwen's socio- semiotic network of social actors (2008), is a framework in Critical Discourse Analysis which helps discourse analysts discover how the social features ,settled in the underlying levels of discourses, are represented on the upper levels. This study tries to explore the way social actors are nominated and categorized in “Al” which is a story about the culture of nomadic people in Iran by Mohammad Bahmanbeigi, a famous Iranian novelist and the winner of the UNESCO’s literacy prize. By social actors we mean every single person that plays a role or occupies a specific position in a given society. Particularly, this study attempts to find answers to the following questions:
1. How does the writer use nomination and categorization to express his own viewpoints about the social actors of Nomadic societies of Iran?
2. Can these nominations and categorizations reflect the nomadic people's viewpoints about social actors at the time of nomadic people's illiteracy?
Adopting Van Leeuwen's model of representing social actors, a lot of researcher have tried to explore the social actors of different political and educational discourses but the innovation of this study is that it tries to change the direction of studies from political discourses to literary ones.  Another point is that most of the studies about the representation of social actors have relied mostly on the frequency of the socio- semantic features for their final discussion and results but this study has focused more on qualitative analysis than just counting the frequency of the socio- semiotic features. Although counting frequencies can reveal significant patterns, it is better not to make great claims for numbers. On the contrary, it is important to realize that frequencies often shift with the stages in the writer’s argument and may not be an overall characteristic of the text (vide. Van Leeuwen, 2008: 31).
 The results of this study show that the representation of social actors in “Al” is purposeful and serves to control the viewpoints of the society. The writer, using the advantages of nomination and categorization, expresses his viewpoints covertly and portrays the oppression of women in nomadic societies. On the one hand, the writer categorizes women generically to demonstrate them as the social actors engaged in common complications and on the other hand, he nominates women specifically and individually to picture them as distinguished and independent persons. Men's appraisements are all positive and represent the nomadic people's opinions about males but the appraisements of women, according to the social norms dominating the text, are changing. Using the advantages of deviation, the writer introduces the main character of the story as a deviant actor involved in opposite activities to challenge social norms and beliefs.

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Bio-fertilizers have been introduced as an alternative to chemical fertilizers for plant growth and health. The objective of this pot culture experiment was to evaluate the effects of three Bio-fertilizers in single and mixed form containing arbuscular mycorrhizal fungus (Glomus intraradices), N+V on growth, yield components, and expression of some defense response genes in wheat infected with Fusarium oxysporum. Real time PCR was performed to determine the gene expression levels of β-1,3-glucanase, Oxalate Oxidase, and Chitinase genes. The application of bio-fertilizers significantly increased all studied parameters, except spike length, in infected plants. The highest shoot dry weight was found in Nitroxin+Vermicompost (N+V) treatment and the highest plant height, grain number, 100 grain weight, and biological yield was observed in treatment Mycorrhizal+Vermicompost (M+V). The use of bio-fertilizer resulted in the highest expression level of β-1,3-glucanase gene .The Chitinase gene showed the lowest expression level in all treatments. Our results indicate that vermicompost application could influence the improvement of mycorrhizal colonization and development of external hyphae.

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Egg parasitoids forage for hosts in a dynamic ecosystem. The short longevity of the adult stage forces them to access a host in a short time. The current study examined optimal reproductive attributes of three egg parasitoids: Trissolcus agriope (Kozlov and Le), Trissolcus delucchii Kozlov and Trissolcus niceppe (Kozlov and Le) (Hymenoptera: Scelionidae). The characteristics used were fecundity, immature survival rate, daily reproduction, and sex ratio that emerged from host eggs, Acrosternum arabicum Wagner (Hemipteran: Pentatomidae). Experiments were conducted separately in the first day of emergence, 20, 40, 60 and 80% of the mean longevity of naïve foundresses, influenced by mating status and under host deprivation conditions. The results revealed that the immature survival rate of foundresses of T. agriope on the first day of emergence, and at 20 and 40% of longevity were higher than other progeny produced by the three parasitoids, whether mated or unmated. All foundresses produced maximum progeny in the first oviposition experience, although the oviposition period was continuous. Regardless of mating status, the progeny production of T. agriope and T. niceppe declined in the last two stages (60 and 80% of female longevity). The proportion of male progeny increased with foundress age from 40% of their longevity. The species-specific performance of female parasitoids is discussed with regards to oogenesis, oosorption and survival of male gametes in female spermatheca. The results provided information about suitable female age for mass rearing and mass release programs, whether in inundation method or for determination of inoculation rhythms.