Physiological behaviour of few Cultivars of Paddy (Oryza sativa L.) during Seed Germination and early Growth, subjecting to distillery Effluent Stress

摘要

An attempt was made to understand physiological behavior of few cultivars of paddy (Oryza sativa L.) subjecting to distillery effluent stress. Physio-chemical data of effluent reveals that it is rich in both organic and inorganic load. Subjecting five cultivars of paddy viz., Jaya, Jyothi, Mandya Vijay and MTU-1001, to different dilution of effluent (viz. 6%, 12%, 25%, 50% and 100%) preliminary germination was conducted. Percent germination, root length and shoot length was almost similar in control and 6% dilution of distillery effluent, with further increase in concentration, gradual inhibitory effect was noticed, whereas complete inhibition was observed at 100%. Physiological parameters such as total carbohydrate, total starch content was high, whereas reducing sugar was low in germinated seedlings treated at higher concentration of effluent. Total protein decreased at higher concentration in all cultivars of paddy. It was high at 6% and decreased gradually with increase in dilution concentration of effluent, when compared to control. These results reveal that degradation and mobilization of seed serves is impaired by cat ions and anions in the effluent by disturbing the activities of enzymes essential for it. Overall data of physiological parameter reveals that Jaya cultivar is sensitive among five cultivars of paddy, when subjected to distillery effluent stress.