A primary study on allelopathy of Artemisia vulgaris

Abstract

Abstract: Allelopathy is the positive or negative effects of chemicals released by one plant on the growth or reproduction of others. Chemicals extracted from plant roots or shoots directly inhibit or stimulate the germination, growth, and development of other plants. Allelochemicals also indirectly affect the other plants through the inhibition of microorganisms. Allelopathy exists widely in nature and plays a vital role in crop production systems and pest (insects, nematodes, pathogens and weeds) management. The allelopathic effects of Artemisia vulgaris on the seed germination and growth of crops Triticum aestivum (wheat), Sorghum vulgare (sorghum), Cucumis sativus (cucumber), Brassica campestris (rape) and Raphanus sativus (radish) were studied, and its effects on MDA content were also studied to determine the allelopathic mechanism. The allelopathy of aqueous extract from A. vulgaris was tested in petri dishes. It strongly inhibited the germination, germination speed and seedling growth of tested crops. Rape and radish were more sensitive than other species. The synthesis effects of rape, radish, cucumber, wheat and sorghum were 100%, 87.26%, 69.88%, 61.11% and 52.77% respectively at a concentration of 0.012 5 g/mL. The MDA contents of cucumber and radish increased markedly after treatment. The results indicated that the allelopathic effect of A. vulgaris could break cell membranes by promoting MDA.

CLC Number:

LI Mei, GAO Xing-xiang, GAO Zong-jun, WANG Qing. A primary study on allelopathy of Artemisia vulgaris[J]. Acta Prataculturae Sinica, 2010, 19(6): 114-119.

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