International Journal of Ecology and Environmental Sciences

International Journal of Ecology and Environmental Sciences


International Journal of Ecology and Environmental Sciences
International Journal of Ecology and Environmental Sciences
2020, Vol. 2, Issue 4
Biochemical parameters influenced groundnut (Arachis hypogaea L.) yield under water stress at different flowering phases

P Maheswari, MK Kalarani, A Senthil, S Sowmiyapriya

The study was conducted to evaluate the variations in biochemical parameters and yield among groundnut genotypes under drought condition. Four genotypes viz., CO 7, COGn 4, TMV 7 and TMVGn 13 were used for this investigation with water stress at different flowering phases viz., Pre Flowering Drought - PDF (15-30 DAS), Flowering Drought – FD (35-50 DAS) and Post Flowering Drought - POFD (75-90 DAS) by withholding irrigation and also control maintained with irrigation to field capacity for comparison. Nitrate reductase activity-NR, proline content, peroxidase activity-POX and Superoxide dismutase activity-SOD were observed during stress period and after recovery of stress. Under stress condition, proline, POD, SOD levels were increased, but NR activity got decreased. After rewatering, flowering and post flowering stressed plants are failed to recover NR activity but it was completely recovered in pre flowering drought imposed plants. PFD recorded more kernel yield, than flowering and post flowering stage stress imposed plants.
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How to cite this article:
P Maheswari, MK Kalarani, A Senthil, S Sowmiyapriya. Biochemical parameters influenced groundnut (Arachis hypogaea L.) yield under water stress at different flowering phases. International Journal of Ecology and Environmental Sciences. 2020; 2(4): 133-136.