نتایج جستجو برای: aerial and root biomass
تعداد نتایج: 16860564 فیلتر نتایج به سال:
Background and purpose: Hypoxia occurs in ischemia and heart attack, and leads to death. It involves production of reactive oxygen species. Antioxidants exhibit antihypoxic properties. Ferula persica has distinctive antioxidant activities. Nothing is known about the protective effect of this plant against hypoxia-induced lethality in mice. Materials and methods: Protective effects of methanol...
Bolinder, M. A., Angers, D. A., Bélanger, G., Michaud, R. et Laverdière, M. R. 2002. Root biomass and shoot to root ratios of perennial forage crops in eastern Canada. Can. J. Plant Sci. 82: 731–737. Shoot to root ratios (S:R) at peak standing crop are commonly used to estimate the annual crop residue C inputs to the soil from the root biomass left in the soil at harvest. However, root biomass ...
Biochar is a carbon rich product which created under low Oxygen conditions. In this study the effect of Biochar in three levels 0, 0.5 and 1 weight percentage on morphological traits like height, SLA, aboveground and underground biomass, length and volume of root and physiological characteristics such as chlorophylls, gas exchange and electrolyte leakage for two Bromus tomentellus and Medicago ...
In order to study the effects of salinity stress on morphological traits, essential oil content and ion accumulation in basil (Ocimum basilicum) plant under hydroponic conditions, a factorial experiment based on completely randomized blocks design with three replications was conducted on three landraces (Jahrom, Banafsh and Isfahan) and five NaCl salinity levels (0, 40, 80, 120 and 160 mM) in c...
gerbera jamesoniiis of commercial significance and fifth most used cut flower in the world today. a pot experiment was performed to see the effect of co-inoculation of arbuscular mycorrhizal fungi (amf) i.e. (glomus mosseae andacaulospora laevis) with phosphate solubilizing bacteria pseudomonas fluorescensin the presence of different doses of superphosphate (low, medium, high) on growth establi...
In order to study the genetic diversity of 75 Iranian rice genotypes (45 Iranian land race, 25 improved cultivars, and 5 exotic cultivars) with respect to their salinity tolerance at seedling stage and to determine tolerance indices, based on biomass, genotypic code and Na+/K+ ratio a factorial experiment in randomized complete block design with three replications was conducted under control an...
isolation and structure elucidation of secondary metabolites from echinophora platyloba dc from iran
background: echinophora platyloba dc (apiaceae) is one of the two endemic species of echinophora genus in iran. it has many folkloric uses and several biological activities but there is no information about its phytoconstituents. objective: in this work some of the secondary metabolites were isolated, purified and identified from n-hexane, ethyl acetate and methanol extracts from the aerial par...
Intensive vegetation management alters seedling growth and development in southcm pine plantations. Adequate light, moisture. and nutrients stimulate seedling stem growth and crown development. Thus rapid stem growth could deplete nutrient and energy resources required for aggressive rcot growth. Early root system expansion within the available rooting zone is critical because structural root g...
The Rhinelander free-air CO(2) enrichment (FACE) experiment is designed to understand ecosystem response to elevated atmospheric carbon dioxide (+CO(2)) and elevated tropospheric ozone (+O(3)). The objectives of this study were: to understand how soil respiration responded to the experimental treatments; to determine whether fine-root biomass was correlated to rates of soil respiration; and to ...
Isolation and Structure Elucidation of Secondary Metabolites from Echinophora platyloba DC from Iran
Background: Echinophora platyloba DC (Apiaceae) is one of the two endemic species of Echinophora genus in Iran. It has many folkloric uses and several biological activities but there is no information about its phytoconstituents. Objective: In this work some of the secondary metabolites were isolated, purified and identified from n-hexane, ethyl acetate and methanol extracts from the aerial pa...
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