Ecology, Environment and Conservation Paper

Vol 28, Issue 3, 2022; Page No.(1507-1515)

EFFECT OF POTASSIUM NITRATE ON GERMINATION PHYSIOLOGYOF MAGNESIUM NITRATE PRIMED AND NON-PRIMED RICESEEDS VAR. SWARNA

S. Mondal and B. Bose

Abstract

Present work deals about the influence of graded solution of Potassium Nitrate (KNO3) on germinationphysiology and seedling vigor index, using Magnesium Nitrate [Mg(NO3)2] (4 mM) primed seeds of ricevariety Swarna to ensure the importance of seed priming technology vis -a-vis tolerable capacity of seed /seedling towards KNO3. During experimentation graded solution of KNO3 was taken into petri dishes,containing Mg(NO3)2 primed and non-primed seeds of rice for the study of various parameters, includedgermination percentage and index, speed and mean time for germination, plumule and radicle lengths,root number, fresh and dry weights of seedlings and -amylase activity. However, time duration of studyranged from 48 h of germination to 8th days of seedling age. Experiment reveals that Mg(NO3)2 primedseeds performed better as compared to non-primed one even with the introduction of various concentrationsof KNO3 solution. Optimum results were obtained with 10 to 15 mM of KNO3. Nowadays the seed primingproves itself one of the most viable technologies for field and vegetable crops. But to maintain thesustainability of the soil one has to think also about the absorbing competence of that particular crop in thefield condition in presence of various fertilizers, specifically nitrogen containing one while using primedseeds. The present experiment actually reflects the growing capability of Mg(NO3)2 primed seeds in presenceof an important nitrogenous salt’s solution, i.e. KNO3.