Water relations and nitrogen fixation in potassium fedVigna radiata nodules |
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| Authors: | A S Nandwal B S Kundu A Hooda M S Kuhad |
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| Institution: | (1) Department of Botany and Department of Microbiology, CCS Haryana Agricultural University, Hisar, 125004 Haryana, India;(2) CCS Haryana Agricultural University, Hisar, 125004 Haryana, India |
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| Abstract: | Drought created by withholding the irrigation at 30 and 45 d after sowing significantly decreased relative water content (RWC)
and osmotic potential (ψs) ofVigna radiata (L.) Wilczek cv. MH-83-30 nodules. Potassium fed plants showed higher RWC, whereas ψs was further declined irrespective of soil moisture levels. The nitrogenase activity and leghemoglobin content of nodules
markedly decreased under drought and nodules of potassium fed plants showed better recovery after rehydration. The proline
content significantly increased under drought but declined upon reirrigation. Also, the C, N and K contents of nodules significantly
declined under drought. |
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| Keywords: | carbon drought nitrogen potassium proline rehydration |
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