Effects of 2, 4-D, GR24 and conditioning period on striga hermonthica, Rashida Mohammed Ahmed Abusin, Hamza Aziber Ousman, Mohammed Mahgoub Hassan, Amani Hamad Eltayeb Hamad, Tilal Sayed Abdelhalim Musa and Abdul-Jabbar Eltayeb Babiker
Rashida Mohammed Ahmed Abusin
University of Bahri
Sudan
Elfatih Abdelaziz Ahmed Mohammed, Agricultural Research Corporation
Sudan
Hamza Aziber Ousman
University of N'Djamena
Chad
Mohammed Mahgoub Hassan
National Centre for Research
Sudan
Amani Hamad Eltayeb Hamad
Sudan University of Science and Technology
Sudan
Tilal Sayed Abdelhalim Musa
Agricultural Research Corporation
Sudan
Abdul-Jabbar Eltayeb Babiker
Sudan University of Science and Technology
Sudan
DOI: 10.47556/B.OUTLOOK2015.13.29
Purpose: This study was set to examine the effects of 2, 4-D on the early developmental stages of the root parasitic weed Striga hermonthica.
Design/Methodology/Approach: S. hermonthica seeds, sprinkled on 8 mm glass fibre discs, in Petri dishes, were treated with 2, 4-D, incubated, treated with GR24, examined for germination radicle extension and response to the haustorium inducer Dimethoxy-p-Benzoquinone (DMBQ).
Findings: Striga seeds conditioned in Distilled Water (DW), and subsequently treated with the synthetic germination stimulant GR24, displayed 53.7–87.4% germination. Seeds conditioned in 2, 4-D prior to treatment with GR24 exhibited 2–64.4% germination. Germilings from seeds conditioned in DW exhibited 8.8–45.4 mm radicle extension. Seeds conditioned in 2, 4-D displayed shorter radicles (0.4–6.2 mm). DMBQ applied to Striga germilings from seeds conditioned in DW effected 73.1% haustorial initiation. Germilings from seeds conditioned in 2, 4-D developed significantly less haustoria.
Originality/value: Germination, radicle extension and haustorium induction were negatively correlated with 2, 4-D concentration.
Keywords: 2, 4-D; Striga; GR24; Germination; Dimethoxy-p-Benzoquinone; DMBQ; Haustorium; Radicle; Sudan
Citation: Abusin, R. M. A., Ousman, H. A., Hassan, M. M., Hamad, A. H. E., Musa, T. S. A., & Babiker, A.-J. E.(2015): Effects of 2, 4-D, GR24 and conditioning period on striga hermonthica, World Sustainable Development Outlook 2015, Vol 13, pp.321-328
