关键词： 石榴, 完全花, 雄花, 泌蜜量, 糖浓度

Abstract: The nectar volumes and concentrations of pomegranate complete flower and male flower are measured during its flourishing florescence.Characteristics of nectar secretion are compared between two types of pomegranate flowers.The results show that (1) the mean nectar volume of single complete flower is 44.66 μL，that of single male flower is 19.43 μL，and the difference between them is extremely significant (t=12.6，P<0.000 1); (2) the mean nectar concentration of complete flower is 22.31%，that of male flower is 19.17%，and the difference between them is also extremely significant (t = 3.2，P=0.001 6); (3) the mean nectar volume of complete flower within 1st day flowering is 31.12 μL，accounting for 70.59% of its total nectar volume，and that of male flower within 1st day flowering is 16.60 μL，accounting for 85.44% of its total nectar volume;(4) although the range of variation of nectar volumes of single complete flower is wider than that of single male flower over the time of pomegranate flourishing florescence，the nectar volumes of single complete flower are always higher that of single male flower compared with data measured at the same time.

Key words: pomegranate；complete flower； male flower, nectar volume； nectar concentration