Impact of Bee Species and Plant Density on Alfalfa Pollination and Potential for Gene Flow

Figure 1

The impact of bee species on (a) the number of flowers visited per raceme; (b) the number of flowers tripped per raceme; (c) the proportion of open flowers that were visited per raceme; (d) the proportion of visited flowers that were tripped per raceme. The numbers inside each column represent the sample sizes while different letters indicate a statistically significant difference between bee species as determined by the Duncan’s multiple range test.

(a) Bee species and number of flowers visited

(b) Bee species and proportion of open flowers visited

(c) Bee species and number of flowers tripped

(d) Bee species and proportion of visited flowers that were tripped