STUDIES ON PHYSIOTOXICITY OF PAPER MILL EFFLUENTS ON ORYZA SATIVA L. VAR. IR 36
RN MISHRA *
Department of Botany, Govt. Science College, Chatrapur 761 020, Orissa, India
GN PANIGRAHY *
Department of Botany, Khallikote College, Berhampur 760 001, Orissa, India
KS PATRA *
Department of Botany, Khallikote College, Berhampur 760 001, Orissa, India
*Author to whom correspondence should be addressed.
Abstract
Physiotoxicity of paper mill effluents on Oryza sativa L. var. IR 36 was studied. The effluent significantly inhibited germination, root and shoot growth and also affected chlorophyll content, sugar, protein, aminoacids and nucleic acids in different degrees. The level of biochemical characteristics and the effluent treatment was negatively correlated and was highly significant (P ≤ 0.001). None of the effluent concentration tried favoured the crop growth.
Keywords: Efiluent, Physiotoxicity, seedlings