Abstract
Sixteen fenugreek landraces from Iran and two landraces from Egypt and India were evaluated for their biochemical and physiological responses to prolonged drought stress and recovery. The landraces were classified into six and three groups during drought stress and recovery, respectively, by cluster analysis. More tolerant landraces showed higher stomatal conductance and transpiration rate. The high potential recovery of landraces after rewatering can be related to high levels of SOD activity and proline accumulation. Ardabil and Shushtar landraces were the most drought tolerant landraces, while Shiraz exhibited the highest potential for recovery after drought. Varamin and Mashhad landraces were the weakest landraces during drought stress and recovery. Some Iranian landraces showed better responses to drought stress and recovery than exotic landraces. Our results indicated that high sensitivity to drought stress does not necessarily mean low recovery potential in landraces. Besides, wide genotypic variation in biochemical and physiological traits among the landraces indicates the importance of these traits in selecting for tolerance to drought stress, especially in arid and semi-arid environments.
Published Version
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