Sains Malaysiana 42(10)(2013): 1501–1504

Allelopathic Effect of Euphorbia guyoniana Aqueous Extract and Their Potential Uses as Natural Herbicides

(Kesan Alelopati Ekstrak Akuos Euphorbia guyoniana dan Potensi Penggunaannya Sebagai Herbisid Asli)

S. Nasrine¹*, S.M. El-Darier² & H.M. El-Taher¹

¹Laboratory for Bioressources Saharan Preservation and Development, University of Kasdi Merbah

Ouargla 30000, Algeria

²Departments of Botany, Faculty of Science, University of Alexandria, Alexandria, Egypt

Received: 10 March 2013/Accepted: 12 May 2013

ABSTRACT

The aim of the present study was to investigate the potential allelopathic effects of  Euphorbia guyoniana (donor species) aqueous extract on germination efficiency of two weeds (Bromus tectorum and Melilotus indica) and one crop species (Triticum aestivum) under laboratory conditions. The germination efficiency, plumule and radicle length of Bromus was completely inhibited at the highest concentration of aqueous extracts of the donor species level (10%). The two recipient species exerted weak measures as affected by the highest concentration level of the donor. This inhibition was markedly obvious in B. tectorum than in M. indica indicating that B. tectorum is more sensitive to the tested donor, while the M. indica is more adapted to the aqueous extract than the B. tectorum.

Keywords: Allelopathy; aqueous extract; Euphorbia guyoniana; germination; weeds

ABSTRAK

Tujuan penyelidikan ini ialah untuk mengkaji potensi kesan alelopati ekstrak akuos Euphorbia guyoniana (spesies penderma) ke atas kecekapan percambahan dua rumpai (Bromus tectorum dan Melilotus indica) dan satu spesies tanaman (Triticum aestivum) dalam keadaan makmal. Kecekapan percambahan, plumul dan panjang radikel Bromus telah terencat sepenuhnya pada kepekatan tertinggi ekstrak akuos bagi tahap spesies penderma (10%). Dua spesies penerima telah memberi kesan lemah seperti yang dikesan oleh tahap kepekatan tertinggi bagi semua penderma. Perencatan ini adalah sangat jelas dalam B. tectorum berbanding dalam M. indica menunjukkan bahawa B. tectorum adalah lebih sensitif kepada semua penderma yang diuji, sementara M. indica adalah lebih teradaptasi kepada ekstrak akuos dibandingkan dengan B. tectorum.

Kata kunci: Alelopati; ekstrak akuos; Euphorbia guyoniana; percambahan; rumpai

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*Corresponding author; email: nesrinemed@yahoo.fr