نتایج جستجو برای: morphological and physiological traits
تعداد نتایج: 16859730 فیلتر نتایج به سال:
تجزیه ژنتیکی برخی صفات مورفولوژیک در گندم از طریق تجزیه میانگین نسلها در شرایط تنش و عدم تنش رطوبتی
Study of heritability, types of genes action and determination of effective breeding strategy to improve physiological and morphological traits especially under drought stress conditions are very important. For such purpose, an experiment was carried out using the generations of the crosses between two pure lines (Kavir × Roshan) under drought stress and non-stress conditions based on randomiz...
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...
Darwin [1], used morphological characters or polygenic traits to describe the hierarchy in complexity among related and distant species although he was unaware of the source of variation. Only later, after the discovery of Mendel’s laws explained that the genetic variations are generated by mutations. Speciation is based on the analysis of the extent of similarity among a wide variety of morpho...
For evaluation of the reaction twenty of spring wheat cultivars under complete irrigation (control) and drought stress condition starting before booting stage, an experiment was conducted in split plot basis of Randomized Complete Block Design with 4 replications in two cropping years (2010-2011 and 2011-2012) in research farm of Agriculture Faculty, University of Tabriz. The results of varianc...
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...
To study the variation of plant traits related to stress tolerance in tolerant and sensitive barley cultivars under salt stress conditions, an experiment was carried out as factorial arrangements in completely randomized design in Payame Noor University of Mahabad, Iran in 2018. Application of salinity stress of 250 mM of sodium chloride started from tillering stage, and leaf samples were taken...
background and objectives: seed vigour is the resultant of a broad range of physiological processes which have genetic background. the study of genetic variation, play an important role in enhancing the ability of breeders in selection and breeding operation. this study aimed to evaluate rice genotypes with the physiological and morphological characteristics related to seed vigour and grouping ...
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