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Turkish Journal of Botany
Year: 2008  |  Volume: 32  |  Issue: 2  |  Page No.: 165 - 170

Effects of Nitrogen Fertilisation on Nitrate Reductase Activity, Protein, and Oil Yields of Nigella sativa L. as Affected by Foliar GA3 Application

Shoukat Hussain SHAH    

Abstract: The influence of foliar GA3 application (0, 10-4, 10-5, or 10-6 M) on the responses of Nigella sativa L. to various levels of N fertilisation (0, 176, 264, 352, or 442 mg N pot-1) was analysed through 2 pot experiments conducted at the Department of Botany, Aligarh Muslim University, Aligarh, India. The N fed plants showed a significant enhancement of capsule number and seed yield plant-1, and nitrate reductase activity, as well as protein and oil yields plant-1, especially upon application of 352 mg N pot-1. Moreover, the effect of basal N was further potentiated following an additional treatment with various GA3 concentrations. However, in contrast to all other parameters, seed oil content decreased with either treatment. Nonetheless, the combined application of 352 mg N pot-1 and 10-5 M GA3 proved to be maximally stimulative.

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