dog rose (rosa canina l.) is one of the most important ornamental and medicinal plants which are used as a rootstock for ornamental roses such as rosa hybrid and rosa floribunda. in vitro propagation of rose has a very important role in rapid multiplication of species with desirable traits and in production of healthy and disease-free plants. micropropagation of rosa canina l. was revised, usin...

Plant growth regulators (PGRs) are a common and widely used practice in cotton production for controlling plant growth, increasing yield, and improving management efficiency. Most of the PGRs used have an effect on plant growth, both vegetative and reproductive, and dry matter partitioning. However, there have been no reports of effects of PGRs on radiation use efficiency (RUE). It is logical t...

Vegetative growth of plants can be influenced by internal factors including hormones (Plant Growth Regulators). The purpose the study is to determine response soybean ( Glycine max L.Merril) after application some plant regulators (PGRs). research method used was Completely Randomized Design (CRD). There were four levels extract concentration that applied namely P0: Control, P1: onion extract, ...

Worldwide, plant growth regulators (PGRs) account for only 3% to 4% of the total sales of plant protection agents. This limited market potential, the rising costs of development and registration, and the demand for high profitability have created major constraints to the introduction of new PGRs. Conversely, PGRs have become an integral part of agricultural and horticultural practices and one m...

in this study the effects of plant growth regulators including; ga3 (0 and 50 mg/l) and ethephon (0 and 500 mg/l) were studied on the quality properties of two grape cultivars (perlette and yaghuti). at the harvest time, some physicochemical characteristics such as fruit cluster weight, fruit diameter, length, volume and l/d ratio, flesh firmness, fresh weight, ta, ph, tss and fruit color were ...

The cotton plant is a perennial with an indeterminate growth habit, and reputed to have the most complex growth habit of all major row crops. Furthermore, it is very responsive to management and changes in the environments and responds to any perturbations in its environment with a dynamic growth response that is often unpredictable. Cotton producers and researchers have, therefore, used plant ...

Over the last few years, we have been experimenting with the idea of applying ethylene-releasing plant growth regulators (PGRs) to the rootzone as a substrate drench. This is a rather radical idea for floriculture production overall and flowerbulb forcing in particular. In this newsletter, we’ll review ethylene as a growth regulator, discuss the commercialy available ethylenereleasing PGRs and ...

Chemical plant growth regulators (PGRs) are used in the production of ornamental potted and bedding plants. Growth control is needed for maximizing production per unit area, reducing transportation costs and to obtain a desired visual quality. However, the use of PGRs is associated with toxicity risks to humans and the environment. In many countries the availability of PGRs is restricted as few...

Chromium is one of the most toxic heavy metals which reduces the growth of plants at relatively low concentrations, whereas IAA, kinetin, GA3 and 24-epibrassinolide (24-epiBr) are well known plant growth regulators (PGRs) which enhance the growth of plants. The present study was undertaken to determine the effect of binary combinations of Cr(VI) and PGRs on Spirodela polyrrhiza (L.) Schleiden, ...