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Effect of some nitrogenous salts on nitrogen transfer and protease activity in germinatingZea mays L. seeds

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Biologia Plantarum


Maize seeds were allowed to germinate in the presence of different nitrogenous salts for 72 h. Changes in the ethanol soluble and insoluble nitrogen were studied in the embryo and in the endosperm. Supply of Ca(NC3)2 enhanced germination and protease activity in the endosperm resulting in greater solubilisation of protein to soluble nitrogen in the seeds. NH4NO3 and (NH4)2SO4 were less effective as compared to Ca(NO3)2. Cycloheximide inhibited germination and protease activity.

Pretreatment also resulted in increase in growth, soluble and insoluble nitrogen, and nitrate reductase activity in the primary leaves. Ca(NO3)2 was more effective than NH4NO3 and (NH4)2SO4.

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Bose, B., Srivastava, H.S. & Mathur, S.N. Effect of some nitrogenous salts on nitrogen transfer and protease activity in germinatingZea mays L. seeds. Biol Plant 24, 89–95 (1982).

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