Phytotozicity of foliar eztract of Canthium dicoccum to vigna radiata, a grain legume
Allelopathic influence of aqueous leaf extract of Canthium dicoccum on certain cell permeability, photosynthetic traits and anti-oxidative metabolisM of Vigna radiata (L) Wilczek cv. KM2 was investigated. The seeds were soaked in 0 (control). 1.0, 2.5 and 5% concentrations of the aqueous leaf extract and the emerging seedlings, irrigated with Cd-extract, were grown in pot culture for 30 days. Compared to control, the photosynthetic pigment levels. Chlorophyll a. b, a+b and carotenoids, total sugars and soluble starch levels were decreased. Soluble proteins accumulated considerably under the influence of Cd-extract. Ratios Fv/Fm and Fo/Fv measured from fluorescence transients were decreased against an increase in half-rise time values. The rate of electrolyte leakage and the malonaldialdehyde (MDA) levels were increased significantly. The activities of oxidative enzymes, Superoxide dismutase (SOD), Poryphenol oxidase (PPO) and Peroxidase (PO)were also stimulated significantly. The toxic foliar chemicals of Canthium dicoccum seem to damage the plasma membrane and inhibit the photochemical quenching by chloroplast and alters the oxidative metabolism of green gram decisively. The derangement of membrane systems seem to regulate the physiological and biochemical mechanism of this plant-plant allelopathic interaction.
Allelopathy ozidative enzymes cellular metabolites fluorescence transients membrane permeability photosynthetic pigments sacred grove trees
M.P. RAMANUJAM M. SATHIYA D. KADAMBAN
Botany Laboratory, Centre for Post Graduate Studies, Lawspet, Puducherry - 605008, India
国际会议
The First International Conference of Asian Allelopathy Society(亚洲化感作用学会第一届国际会议)
广州
英文
188-195
2009-12-18（万方平台首次上网日期，不代表论文的发表时间）