Allelopathic activity of some parasitic weeds

Plamen Marinov-Serafimov,Mariyan Yanev,Ana Ilieva,Shteliyana Kalinova,Irena Golubinova

doi:10.5937/aaser1743089m

Abstract

Allelopathic activity of Cuscuta epithymum L. (CVCEY), Cuscuta campestris Yuncker (CVCCA), Phelipanche ramosa (L.) Pomel (ORARA), Phelipanche mutelii (Schultz) Reuter (ORARM) and Phelipanche spp. (PHESS) on germination and initial development of test plats of Lactuca sativa L. cultivar 'Great Lakes' was studied under laboratory conditions. It was found that, water exracts of the parasitic weed species in concentrations 0.4, 0.8, 1.6, 3.2, 6.4 and 12.8% w/v have a relatively high inhibitory effect on the seed germination of test plants. The inhibiting rate of parasitic weed species from family Convolvulaceae ranges from 6.24 to 100.0% and for the species of family Orobanchaceae from 42.1 to 100.0%. Parasitic weed species from family Orobanchaceae (Ph. ramosa, Ph. mutelii and Phelipanche spp.) showed a considerably stronger allelopathic effect (GIaverage 17.9), as compared with the applied concentrations of water exracts of species from family Convolvulaceae (C. epithymum and C. campestris) (GIaverage 22.7).

Highlights

A major problem with parasitic weed species is their high biological and ecological plasticity, which facilitates their rapid adaptation and dissemination (Parker, 2009; Kubiszewski and Cleveland, 2012; Parker, 2012).Received 22 December 2016The parasitic weed species is common agricultural weed throughout the world, causing reductions in yield of many crops and if infestation is heavly, causes the death of host (Salgude et al, 2015).The integrated pest management (IPM) is recognized as the preferred strategy for the weed control (Kubiszewski and Cleveland, 2012; Joel et al, 2013)
IPM typically involves a reduction in the reliance on chemical pesticides, including herbicides (Hatcher and Melander, 2003)
The advantages are in its complexity, the more effective destruction of parasitic weed species and lower risk of environmental pollution with herbicides

Summary

Introduction

A major problem with parasitic weed species is their high biological and ecological plasticity, which facilitates their rapid adaptation and dissemination (Parker, 2009; Kubiszewski and Cleveland, 2012; Parker, 2012).Received 22 December 2016The parasitic weed species is common agricultural weed throughout the world, causing reductions in yield of many crops and if infestation is heavly, causes the death of host (Salgude et al, 2015).The integrated pest management (IPM) is recognized as the preferred strategy for the weed control (Kubiszewski and Cleveland, 2012; Joel et al, 2013). A major problem with parasitic weed species is their high biological and ecological plasticity, which facilitates their rapid adaptation and dissemination (Parker, 2009; Kubiszewski and Cleveland, 2012; Parker, 2012). The parasitic weed species is common agricultural weed throughout the world, causing reductions in yield of many crops and if infestation is heavly, causes the death of host (Salgude et al, 2015). The integrated pest management (IPM) is recognized as the preferred strategy for the weed control (Kubiszewski and Cleveland, 2012; Joel et al, 2013). The advantages are in its complexity, the more effective destruction of parasitic weed species and lower risk of environmental pollution with herbicides. Scientific researches on parasitic weed species in recent years are focused mainly on creating resistant varieties and hybrids and on the development of highly effective systems for integrated control (Rubiales, 2012; Joel et al, 2013)

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Conclusion