By Ren Sen Zeng, Azim U. Mallik, Shiming Luo
This is the 1st accomplished and up to date reference at the technology, mechanism, technique, and alertness of allelopathy. the target of this functional reference is to record at the newest advances by means of inviting major scientists to give a contribution in particular fields. the amount is geared up lower than 3 significant subsections: historical past of allelopathy, Allelochemicals, allelopathic mechanisms, and bioassays, and alertness of allelopathy in agriculture and forestry.
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Extra info for Allelopathy in Sustainable Agriculture and Forestry
Mallik Department of Biology, Lakehead University, Thunder Bay, Ontario, Canada. ca Abstract. The phenomenon of plants influencing neighbouring plants through the release of chemicals in the environment has been known as early as c. 370 BC. Greeks and Romans have used this knowledge in agriculture since c. 64 AD. However, it was not until 1937 when Hans Molisch gave it a formal name, allelopathy. The definition of allelopathy ranges from simple to all-inclusive and complex, creating controversy as to its limits and bounds.
In general the most important challenge for allelopathy researchers has been to demonstrate the effects of allelopathy separating it from other associated processes under field or experimental conditions. This ‘burden of proof’ placed upon the experimentalists makes them think critically before arriving at conclusions and in general this principle served modern science well. However, because of the interacting nature of allelopathy which readily crosses the boundary of many disciplines, it is often difficult to demonstrate allelopathy.
Scilliroside, a high toxicity bufadienolide glycoside is the main active principle. Other glycosides and aglycones have also been isolated from the bulb. Scilliroside content of bulbs is highest in late summer after a dormancy period and does not appear to change with age. The scilliroside content of seed-derived varieties differs substantially, indicating a genetic factor affecting toxicant levels in the individual seedling plants (Verbiscar, Patel, Banigan and Schatz 1986). Ethanolic extracts of squill bulbs have shown activity against stored product pests such as Tribolium castaneum (Coleoptera: Tenebrionidae) such anti-insect effects were attributed to bufadienolides of squill (Pascual-Villalobos 2002).
Allelopathy in Sustainable Agriculture and Forestry by Ren Sen Zeng, Azim U. Mallik, Shiming Luo