This experiment was conducted to evaluate the effect of drought stress on the attractivity of Trigonella flowers to worker honey bees, seed set and yield of T. moabitica under semi-arid Mediterranean conditions during the flowering stage. At this stage plants were exposed to one of three water regimes: either well-watered, moderately-watered, and drought stress. Results showed that flowers of well-watered plants attracted more bee flower visitors compared to plants grown under drought stress conditions. Plants grown under drought stress conditions were shorter, had fewer numbers of inflorescences, and fewer flowers per plant compared to well and moderately-watered plants. Furthermore, drought-stressed plants produced lower quantities of viable pollen grains, and lower pod and seed set.
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Al‐Ghzawi et al. (2009) studied this question.
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