Abstract

Identification of plants distribution honey plants in an area are very important and necessary for the Apiculture and Nectar production and it also plays an important role in the pollination of flowering plants. The aim of this research was determine flowering duration and delay for three plants of Asteraceae family Shanjan Rangeland [Scorzonera phaeopappa (Boiss.), Senecio mollis (Willd.) and Siebera nana (DC.)]. This research was conducted in Shanjan Rangeland with elevation between 1600 to 2050 m with SW aspect in Shabestar district, East Azerbaijan, Iran in spring and summer, 2011. For sampling, we used an accidental sampling methodology (1*1 m quadrate) in this research and selected 10 samples in each 8 stations separately. Difference elevation was 55 m between each station. There are 10.5, 7.25 and 5.5 days delay for each 110 m elevation deference for flowering start of S. phaeopappa, S. mollis and S. nana, respectively.

Key words: Asteraceae, Scorzonera phaeopappa, Senecio mollis, Siebera nana.