effect of gibberellic acid on marigold (calendula officinalis l.) was evaluated in a pot culture experiment. a factorial experiment based on completely randomized design including 12 treatments and four replications was carried out. main factor was foliar application stages (first, second and third) and sub factor included different concentrations of ga3 (0, 50, 150 and 250 mg l-1). results sho...

Tuberose (Polianthes tuberosa) is one of the most important cut flowers with fragrant buds. To prolong vase life of tuberose, proper preservative solution applying is necessary. For this purpose, two types of chemical and natural treatments were used. Applied treatments were benzyladenine (50, 100, and 150 mg l-1), the extracts of rosemary and Eucalyptus (12, 25 and 50%) and sour orange fruit e...

In order to improve the vase life of alstroemeria cut flowers (Alstroemeria aurantiaca), an experiment was performed based on completely randomized design with 10 treatments including cycloheximide (50, 100 and 200 mg l-1), benzyladenine (50, 100 and 200 mg l-1), coconut juice (5, 10 and 20 %) and control (distilled water) in three replications. In this study, characteristics such as vase life,...

The omission of sucrose from the basal medium stimulated callus formation in bud explants of Citrus sinensis (L.) Osbeck. Moreover, it increased the abscisic acid-induced callus proliferation reported earlier in the presence of 5% sucrose (Altman and Goren, Physiol. Plant. 32: 55, 1974). The inhibition of callus formation by the addition of sucrose was not due to the high osmotic potential of t...

BACKGROUND AND AIMS Ilex khasiana is a rare and critically endangered holly endemic to the Khasi Hills of Meghalaya, India, and confined to a small number of pocket areas. In addition to conventional methods of propagation, endemic and threatened plants such as this could be more effectively multiplied and conserved using in vitro methods. Such techniques have the additional advantage of having...

This study aimed to assess the effects of plant growth regulators (PGRs) on stock production mojave sage ( Salvia pachyphylla ) and ‘Avalanche’ cape daisy Osteospermum hybrid) that received foliar sprays following three PGRs: 200 400 ppm ethephon; 250 500 benzyladenine; 50 100 gibberellic acid 4 7 (GA 4+7 plus benzyladenine. Vegetative [height width index (GI)], number vegetative cuttings, fres...

Many of the herbaceous perennials, especially the newer cultivars of Echinacea, are poorly branching, slow to fill out the pot, and produce few propagules. Configure (6-BA, Fine Americas, Inc.), a new product recently labeled for branching of floricultural crops, was evaluated on a variety of perennials over two seasons. Configure was applied once as a foliar spray at rates of 0, 300, 600, 900 ...

Sucrose phosphate synthase and acid invertase activities in the mature leaves of roses (Rosa hybrida cv Golden Times) were greater in plants grown under a higher night temperature than under a lower temperature regime. In young shoots, the activity of acid invertase was promoted by the lower temperature while that of sucrose synthase was increased at the higher temperature. At both temperatures...