با توجه به اینکه کمبود آب یکی از مهم ترین عوامل محدود کننده تولید محصولات زراعی در مناطق خشک و نیمه خشک می باشد لزوم شناسایی ارقام مقاوم به خشکی و همچنین معیارهای مناسب برای انتخاب این گونه ارقام ضروری است. لذا به منظور بررسی عملکرد، اجزاء عملکرد ژنوتیپ های مختلف ارزن و تعیین متحمل ترین ژنوتیپ براساس شاخص های تحمل به خشکی تحت رژیم های مختلف آبیاری آزمایشی به صورت کرت های خرد شده در قالب طرح بلو...

Determining the morphological characteristics of each plant is an important criterion in generating information for breeding programs. Understanding the vegetation of the region provides planners with a sound vision of the future. Zanjanchr('39')s Tarom Sheet area is a desert state and only allows certain species to grow. In this area, the plants are highly resistant to drought and with unpredi...

this study investigated the impact of explicit instruction of morphemic analysis and synthesis on the vocabulary development of the students. the participants were 90 junior high school students divided into two experimental groups and one control group. morphological awareness techniques (analysis/synthesis) and conventional techniques were used to teach vocabulary in the experimental groups a...

The genus Crataegus L. has a wide distribution in Iran. Induviduals of Crataegus meyeri Pojark. show morphological variations in different regions. In this research, the effects of climatic variations on morphological traits of C. meyeri were studied. Seventy five specimens collected from nine provinces of Iran were measured in two sets of quantitative and qualitative traits. Statistical analys...

this exploratory study aimed to investigate a possible relationship between learners’ beliefs about language learning and one of their personality traits; that is,locus of control (loc). both variables, beliefs and locus of control, are assumed to influence the language learning process. the internal control index (ici) and the beliefs about language learning inventory (balli) were administered...

Gambusia holbrooki Girard, 1859 is considered as one of the non-native and invasive species in the inland waters of Iran. This species occurs in most inland basins and aquatic bodies of Iran and has even been found in brackish waters. Extensive adaptations of this species to its different habitats caused numerous changes in its biological characteristics and morphological traits. The present st...

    Morphological traits genetically correlated with wood production have been targeted as an alternative to the indirect selection of Poplar trees for high biomass production. So in this study two Populus species (P. nigra and P. alba) growing in Kermanshah, Zanjan and Esfahan provinces were selected to investigate the relationship between various leaf morphological traits and growth character...

In order to evaluate ethyl methane sulfonat (EMS) mutagenic substance on some of the phytochemical traits of stevia plants regenerated from calluses, two separate experiments were conducted with three replications. At the first experiment a factorial arrangement based on completely randomized design was used. leaf explants were transferred to MS culture media containing the growth regulator thi...