نتایج جستجو برای: qualitative and quantitative characters
تعداد نتایج: 16889768 فیلتر نتایج به سال:
background & aim: nowadays, tendency to agricultural biotic product sustainable agriculture instead of chemical fertilizers has been going up in all over the world. so, most pharmaceutical industries prefer to use raw material which is produced from organic and stable system. producing organic medicinal plants, such as peppermint, seems important in economical, ecological and bio enviro...
background: arbuscular mycorrhizal fungi (amf) have the potential to optimize the rhizospheric soil characteristics considerably thereby affecting plant growth. objectives: the aim is to investigate the effects of fungi inoculation (glomus intraradices) on morphological, physiological and phytochemical traits of rosemary (rosemarinus officinalis l.) under salt stress. methods: a factorial exper...
BACKGROUND AND AIMS The aims of this investigation were to highlight the qualitative and quantitative diversity apparent between nine diploid Fragaria species and produce interspecific populations segregating for a large number of morphological characters suitable for quantitative trait loci analysis. METHODS A qualitative comparison of eight described diploid Fragaria species was performed a...
A taxonomic revision of the Neotropical palm genus Leopoldinia based on morphological data and morphometric methods was carried out. One hundred and sixteen herbarium specimens were scored for seven qualitative and 24 quantitative variables. Qualitative variables were divided into six characters and one trait. Using the Phylogenetic Species Concept, the six characters were used to recognize thr...
Secale cereale (rye) with its vitally importance can have a marked place in the world cereal production, particularly in North Europe. This study concerns morphology, taxonomy and cytotaxonomy of this species in Iran. Based on the evaluation of 12 qualitative and quantitative morphological characters and using phenetic analysis, it was revealed that, S. cereale occurs in Iran with two subspecie...
Many aspects of morphological phylogenetics are controversial in the theoretical systematics literature and yet are often poorly explained and justified in empirical studies. In this paper, I argue that most morphological characters describe variation that is fundamentally quantitative, regardless of whether they are coded qualitatively or quantitatively by systematists. Given this view, three ...
The seed micromorphological characters of 15 taxa of Iranian Pyrus comprising 22 individuals were examined by Scanning Electron Microscopy (SEM) and Digital Microscopy (DM) for the first time in this survey. For the assessment of probable ecological effects, several individuals of some widespread species were studied. After collecting several samples of each wild taxa of Pyrus from different lo...
water is one of the most important restrictive factors in crop production. therefore, optimum use of water resources in line with sustainable agriculture is mandatory. in this research the effects of different amounts of allowed soil water depletion at various growth stages of root sugar beet and its effect on qualitative and quantitative characters of the crop were studied. the experimental de...
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