Effect of potassium nitrate on germination physiology of magnesium nitrate primed and non-primed rice seeds var. Swarna

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.

Effect of Nutripriming with Boric Acid, Zinc Sulphate Heptahydrate and its Combination on Germination Physiology of Lentil (Lens culinaris L.) cv. HUL 57

“…The critical scrutinization of the results for all the abovementioned parameters showed that the application of zinc sulphate heptahydrate and boric acid both have an optimum concentration where the maximum attainments of the values were observed in present case. Similarly, Mondal and Bose (2022) reported that in plant system has the capacity to act as per the concentration of the chemicals, which are beneficial for their growth, otherwise the level more than that may be either toxic or inhibitory. In another study, Farooq et al (2006) noted that the optimum concentration of zinc sulphate heptahydrate and boric acid either used separately or in combined form during the time of seed priming may improve the homeostasis by maintaining the suitable criteria for the germinating seeds and seedling.…”