NATURAL SCIENCES

Journal of fundamental
and
applied researches

Investigation of allelopatic activity of giant hogweedin Murmansk region with water extracts

2013. №4, pp. 27-31

Menshakova Mariya Yu. - Ph.D. (Biology), Assistant Professor, Murmansk State Humanities University, 9 Communa Str., Murmansk, 183038, Russian Federation, dendrobium@yandex.ru

Chrusheva Victoriya V. - student, Murmansk State Humanities University, 9 Communa Str., Murmansk, 183038, Russian Federation, dendrobium@yandex.ru

This article is devoted to investigation of allelopatic activity of giant hogweed in Cola peninsula. Growth inhibition of oats sprouts was revealed in test with water extracts. In concentrations 30 and 40 g/100 ml seeds didn`t germinate. In lower concentrations the most sensitive process was growth of leaves. The most tolerant was roots forming. Water extracts from leaves was more toxic then from stems. In 10 g/100 ml concentration was revealed stimulation with both types of extracts. Given the enormous weight of hogweed, you can imagine is so significant concentration of allelopathic substances in the soil in which it grows hogweed. Results of our investigation show that giant hogweeds in the North have pronounced allelopatic activity. That is way they can be dangerous for native vegetation.

Key words: invasive species,allelopathy,naturalization,area,introduction,germination,ecosystem