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...

We have isolated an allele of fass, an Arabidopsis thaliana mutation that separates plant development and organ differentiation from plant elongation, and studied its hormonal regulation. Micro-surgically isolated fass roots elongate 2.5 times as much as the roots on intact mutant plants. Wild-type heart embryos, when cultured with a strong auxin, naphthaleneacetic acid, phenocopy fass embryos....

A two-stage method for in vitro propagation of six Genista species from shoot tips was developed. Multiple microshoot cultures were obtained by growing the shoot tip explants on Schenk and Hildebrandt medium supplemented with 9.84 microM 6-(gamma,gamma-dimethylallylamino)-purine and 0.99 microM thidiazuron. The best shoot elongation was achieved on Schenk and Hildebrandt medium containing 4.92 ...

Tomatoes are consumed worldwide as fresh vegetables because of their high contents essential nutrients and antioxidant-rich phytochemicals. contain minerals, vitamins, proteins, amino acids (Leucine, Threonine, Valine, Histidine, Lysine, Arginine), monounsaturated fatty (Linoleic Linolenic Acids), Carotenoids (Lycopene ?-Carotenoids) Phytosterols (?-Sitosterol, Campesterol Stigmasterol). GCMS a...

BACKGROUND AND AIMS Cassava (Manihot esculenta) has three adventitious root types: primary and secondary fibrous roots, and storage roots. Different adventitious root types can also regenerate from in vitro cultured segments. The aim of this study was to investigate aspects of in vitro production of storage roots. METHODS Morphological and anatomical analyses were performed to identify and di...

In the domestic cat (FeZis catus) phenol is converted mainly to phenylsulphate with only small amounts of phenylglucuronide [l] . The cat’s ability to form the glucuronides of foreign compounds is low compared with other species [2] and it forms little or no glucuronide with phenol [I], benzoic acid [3], sulphadimethoxine [4] , or 1-naphthylacetic acid [5]. It was of interest therefore to find ...

Under natural photoperiodic conditions protandry in hermaphrodite disc flowers of sunflower (Helianthus annuus L.) is determined by the different elongation rates of the style and filaments. The elongation of the filament and style starts simultaneously after the daily dark period, but the style growth rate is slower. When plants close to anthesis are exposed to continuous white light (WL) a lo...

FASCICLED EAR (Fa}, a dominant ZEA MAYS L. Mutant effecting the form of the inflorescence, was treated with aqueous solutions of a-naphthaleneacetic acid, indoleacetic acid, gibberellic acid, maleic hydrazide and triiodobenzoic acid every three days from the seedling stage until tassel emergence. The mutant responded to a-naphthaleneacetic acid and indoleactic acid in such a manner that certain...