Abstract
The effect of water stress on nodulation and nitrogenase activity of guar (Cyamopsis tetragonoloba (L.) Taub.) was studied at both vegetative and flowering stages. Stress did not induce any change in the nodule number but caused a significant reduction in nodule fresh weight. Drought-induced reduction in nitrogenase activity was observed at both the stages. Upon rewatering, rapid recovery in the activity was noticed which seems to be related to the adaptation of this legume to and regions.
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