نتایج جستجو برای: vigor index
تعداد نتایج: 400571 فیلتر نتایج به سال:
Abstract Germination and field emergence are delayed their duration is prolonged due to the declining soil temperature during spring season, which reflected in subsequent stages of crop growth, therefore, this study aimed improve germination. Under a wide range environmental conditions, laboratory factorial experiment was carried out effect seed stimulation with potassium nitrate (distilled wat...
Soil moisture is one of the most important determinants of plant’s seed germination, emergence and finally yield formation in arid and semi-arid zone (e.g. IRAN). In such a situation, the selection of a cultivar resistant to drought is the most important task. In this regard, a research at three levels (Farm, Greenhouse, Laboratorial) was conducted to study 10 genotypes with three improved back...
Considering frequent observation of low vigor (dwarf) and precocious walnut seedlings in some of Iran nurseries, and in order to understand genetic causes of this phenomenon and the effect of parental genotype on the seedling vigor and precocity, two half–sib family tests were conducted using open pollinated seeds of Persian walnut (Juglans regia L.) trees with different vigor and bearing habit...
Experimental data and discussion. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . The modifiability of certain characters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Material and methods. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117 121 121 123 ...
Salinity is one of the most important factors limiting agricultural production. Cotton, as an oil-fiber plant, is one of the most important industrial plants and is sensitive to salinity, especially at germination and seedling stages. Therefore, in this study, 14 allotetraploid varieties of commercial and local cotton were selected. The study was carried out as factorial with a completely rando...
Decision making requires an actor to not only steer behavior towards specific goals, but also determine the optimal vigor of performance. Current research and models have largely focused on the former problem of how actions are directed, while overlooking the latter problem of how they are energized. Here, we designed a self-paced decision-making paradigm that showed that rats' performance vigo...
The introduction of nanoparticles into seed germination and seedling growth of plants might have a significant impact and thus, it can be used for agricultural applications for better growth and yield. The purpose of this study was to compare the effects of silica and silver nanoparticles on seed germination and early growth traits as well as percent and rate of germination, root length, shoot ...
environmental stress, particularly drought stress can play an important role in reducing plant growth especially during the germination stage in arid and semi-arid regions in iran. for cultivation of medicinal plants in arid and semi-arid areas, the assessment of their tolerance is very important. in this research, in order to evaluate the effects of salicylic acid pretreatment on enhancement o...
Embryological Aspects of Hybrid Vigor in Pines: Color Reaction of Vitamin A on Acid Earths: DR. PROFESSOR JOHN T. BUCHHOLZ .............................................. 135 GERDA GERNSHEIM MAYER and DR. HARRY SOBOTKA. Correction on "Chronic Intermittent Obituqary: Anoxia . . . ": PROFESSOR WARD C. HALSTEAD. Nevin M. Fenneman: DR. RAYMOND WALTERS. 142 How Stentor Anchors Itself: PRoFEssSOR E. A...
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