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Effects of Insects on Pollination in Angelica gigas Nakai and Angelica acutiloba Kitagawa  

Kim, Dong-Hwi (National Institute of Crop Science, RDA)
Park, Hee-Woon (National Institute of Crop Science, RDA)
Park, Chun-Geun (National Institute of Crop Science, RDA)
Sung, Jung-Sook (National Institute of Crop Science, RDA)
Seong, Nak-Sul (National Institute of Crop Science, RDA)
Publication Information
Korean Journal of Medicinal Crop Science / v.14, no.4, 2006 , pp. 217-220 More about this Journal
Abstract
It is known that the process of variety development and maintenance of original plant is difficult in Angelica gigas and Angelica acutiloba because they are allogamous plants. The contents like this are stand in the way of theirs breeding. This study was conducted to investigate the foraging activity and pollinational efficacy by insects to flowers of A. gigas and A. acutiloba. Foraging activity by pollinators was observed every day from 10:00 to 10:30 during 3 days after September 21. Honey bee and fly were major pollinators. The rate of hymenoptera and diptera to total numbers of insects was the 56.5% and 40.6% in A. gigas, respectively. It was also 46.3% and 51.8% in A. acutiloba, respectively. The other insects were lepidoptera, coleoptera and hemiptera. The numbers of hymenoptera and diptera were more in flowers of A. gigas was 49.2% with bee, 36.0% with fly, 15.3% with human, 0.9% without anything in the nethouse and 76.6% in the open field. That of A. acutiloba was 43.6% with bee, 27.9% with fly, 20.3% with human, 0.6% without anything in the nethouse and 46.9% in the open field. Excepting open field, seed setting rate of with bee in the nethouse was the highest of all the others. However, we concluded that the use of fly was the most effective method for pollination of A. gigas and A. acutiloba considering low cost and convenient handling.
Keywords
Angelica gigas Nakai; Angelica acutiloba Kitagawa; Pollination; Bee; Fly;
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