نتایج جستجو برای: roots dry and fresh weight

تعداد نتایج: 16876168  

Root-knot nematodes cause physiological and anatomical disorders in plants. The present study contains the results of an investigation of the effect of Meloidogyne incognita race2 on the growth of roots and aerial organs of tomato under greenhouse conditions. The experiment in a completely randomized design split split plot on two susceptible (Falat Y) and tolerante (Gina VF) tomatoes variety w...

رضاپور محجوب, شیلا , قربانلی, و مه لقا , نیاکان, مریم ,

Nowadays, cultivation of medicinal plants in the greenhouse and use of appropriate strategies to improve the response to environmental stresses on one hand, and growth of medicinal compounds on the other hand, has been under consideration. In this research, effect of exogenous putrescine on resistance of Datura stramonium plant to salinity stress was evaluated through studying growth parameters...

خیاط, مهدی , سجادی‌نیا, عبدالرضا , کریمی, حمید رضا ,

Abstract In order to study of the effect of substrates on vegetative and ecophysiological characteristics of coleus plant, coleus cuttings containing two leaves were planted in perlite, cocopeat, peatmoss, compost, 50% perlite + 50% cocopeat, 50% perlite + 50% peatmoss, 50% perlite + 50% compost, 5% cocopeat+50% peatmoss, 50% cocopeat + 50% compost and 50% peatmoss + 50% compost with four repl...

احسان‌زاده, پرویز , مرادی, لایق ,

  To investigate the effect of cadmium (Cd) on some physiological parameters of safflower genotypes a 3-replicate factorial randomized complete blocks experiment was conducted under hydroponics culture in greenhouse facilities of the Isfahan University of Technology in 2012. Four levels of Cd (control (0), 1.5, 3.0 and 4.5 mg/L) were tested on six safflower genotypes (Arak2811, Kouseh, Nebraska...

Journal: :Plant physiology 1988
A M Pahlavanian W K Silk

In the range 16 to 29 degrees C, increases in temperature caused large (two-to threefold) increases in growth velocity, growth strain rate, and biomass deposition rate in primary roots of maize, Zea mays L. Temperature had small effects on root diameter, fresh weight density, and dry weight density, and negligible effects on length of the growth zone and growth strain at particular positions.

جودکی, مریم, شریعتمداری, حسین , شیروانی, مهران ,

Due to wasteful use of low-quality irrigation water, many agricultural lands in arid and semi-arid regions of Iran are confronted with salinity phenomenon. Salinity decreases growth and yield of plants, therefore, ways to combat deleterious effects of soil salinity on plant growth should be sought. One of these strategies is physiological prevention of salt accumulation in plants and increasing...

Journal: Journal of Nuts 2017

Several species of Phytophthora cause crown and root rot diseases of herbaceous and woody plants. Crown and root rot of pistachio trees cause significant damages in infected orchards. The effect of foliar application with Elite (fosetyl-Al) in 2 and 2.5 g/l was evaluated in greenhouse experiments. The frequency of mortality, fresh and dry weight of roots and shoots, height, intensity of crown r...

In recent years, in the world and in Iran as well, attention to Lisianthus flowers has been such that its production has increased significantly. With the increase in the production of Lisianthus cut flowers, attention to nutrition and application of treatments to improve the growth and storability of this flower is felt more than ever. For this purpose, the effect of karrikin, salicylic acid a...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه گیلان - دانشکده فنی 1393

asymmetric membranes are widely used in many industrial membrane separation processes. the major advantage of membrane filtration over the conventional process is its ability to remove a wider spectrum of particles without using any chemicals. hollow fiber configuration offer many advantages over flat-sheet or tubular membranes. the spinning process of hollow fiber may look simple, yet it is te...

Journal: :علوم گیاهان زراعی ایران 0
حمیدرضا عیسوند استادیار دانشکده کشاورزی دانشگاه لرستان محسن آذرنیا دانشجوی کارشناسی ارشد دانشکده کشاورزی دانشگاه لرستان فرهاد نظریان فیروزآبادی استادیار دانشکده کشاورزی دانشگاه لرستان رضا شرفی دانشجوی کارشناسی دانشکده کشاورزی دانشگاه لرستان

this research evaluated the effects of gibberellin (ga3) and abscisic acid (aba) on emergence capability, rate of emergence, vigor index and some physiological characters of chickpea seedling (cicer arietinum l.) in a field experiment (as split) under dry and irrigated conditions. seeds were primed with 0, 50, 100 and 150 ppm of each phytohormones. examined chickpea cultivar was azad. the resul...

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