Abstract
Waterlogging tolerance of chickpeas was found, in earlier work, to decrease sharply at flowering. Three experiments were performed to attempt to explain the mechanisms involved in this response. In the first, a range of treatments was imposed to modify the plant's source/sink relationships, as carbohydrate supply and partitioning were considered possible determinants of waterlogging tolerance. Plants from which buds were removed showed the most rapid recovery after waterlogging. Defoliation immediately before waterlogging reduced the rate of recovery. Application of benzyladenine plus gibberellic acid prior to waterlogging delayed stomatal closure and leaf senescence, inhibited apical growth and stimulated axillary growth.
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