Multiple shoots were achieved through axillary bud explant of Spilanthes acmella on MS medium supplemented with 0.5mg/l BA. In vitro developed axillary buds and tiny shoots isolated from the multiple shoots were encapsulated in different strength of sodium alginate. The present work explains the role of components of culture medium on morphogenic response of encapsulated shoot tips to various t...

Xylem within trees varies in its hydraulic efficiency and safety. Trees at the alpine timberline were expected to exhibit a hydraulic architecture protecting the leader shoot from winter embolism. Hydraulic and related anatomical parameters were compared as well as seasonal courses of winter embolism in leader shoots and twigs of Norway spruce trees growing at 2000 m. Leader shoots had a 1.4-fo...

Activation of aspartate-specific cysteine proteases (caspases) plays a crucial role in programmed cell death (PCD) in animals. Although to date caspases have not been identified in plants, caspase-like activity was described in tobacco during a hypersensitive response to pathogens and in Arabidopsis and tomato cell cultures during chemical-induced PCD. Caspase-like activity was also detected in...

BACKGROUND AND AIMS Plants have complex mechanisms of aerial biomass exposition, which depend on bud composition, the period of the year in which shoot extension occurs, branching pattern, foliage persistence, herbivory and environmental conditions. METHODS The influence of water availability and temperature on shoot growth, the bud composition, the leaf phenology, and the relationship betwee...

Bulbs of tulip (Tulipa gesneriana L. `Gander'), in which the formation of ̄oral organs had been completed, were chilled at 28C for 3±30 weeks and then forced hydroponically at 208C under a 12 h photoperiod with the light at 100 mmol mÿ2 sÿ1. The fresh weight and the perianth length of the cut ̄ower highly correlated with the dry weights of shoots and ̄oral organs at anthesis, respectively. The d...

ArisaemajacquemontiiBlume (Araceae) is reputed for its physiological properties in the folk medicine system and used in Chinese herbal medicine as anti-convulsant. Methanolic extracts of roots and fruits, the chloroform extracts of roots and shoots of ArisaemajacquemontiiBlume were investigated for immunomodulatory,antileishmanialand phytotixic activities. Immunomodulatory activitywas investiga...

To understand the response of potato to salt stress, antioxidant enzyme activities and ion content were analyzed for a sensitive and a tolerant cultivar. Nodal cuttings of the tolerant cultivar, Kennebec, and the sensitive cultivar, Concord, were exposed to media without or with 30, 60, 90 or 120 mmol/L NaCl for 4 weeks. On exposure to NaCl, the length and fresh and dry weight of both shoots an...

Petiole explants were obtained from in vitro grown diploid (2x = 22) Echinacea purpurea plantlets. Shoots were regenerated by culturing the explants on MS basal medium containing 0.3 mg/L benzyladenine (BA), 0.01 mg/L naphthaleneacetic acid (NAA) and four concentrations (30, 60, 120, and 240 mg/L) of colchicine for 30 days, or 120 mg/L of colchicine for various durations (7, 14, 21, and 28 days...

An investigation has been made of the changes in the major phosphorus containing substances in Avena sativa during the first 8 days of dark germination. The endosperm, roots, and shoots were analyzed separately for acid soluble-P, phytic acid-P, inorganic-P, lipid-P, nucleic acid-P, and protein-P. Phytic acid-P comprised 53% of the total seed phosphate, while the sum of lipid-P, nucleic acid-P ...

This study was conducted to evaluate the effect of plant growth regulators on in vitro shoot multiplication, vitrification and rooting of two carnation cultivars (Eskimo Mogr and Innove Orange Bogr). Isolated axillary buds were cultured on MS medium supplemented with different levels of Benzyl amino purine (BAP) or kinetin (Kin) in combination with 0.2 mg/l NAA and shoot multiplication and vitr...