Table of Contents
International Scholarly Research Notices
Volume 2014 (2014), Article ID 134931, 8 pages
http://dx.doi.org/10.1155/2014/134931
Research Article

Effect of Seed Priming on Early Development of Sorghum (Sorghum bicolor L. Moench) and Striga hermonthica (Del.) Benth

1Commission for Biotechnology and Genetic Engineering, National Centre for Research, Khartoum, Sudan
2Environment and Natural Resources Research Institute, National Centre for Research, Khartoum, Sudan
3Sudan University of Science and Technology, College of Agricultural Studies, Khartoum, Sudan

Received 18 March 2014; Revised 28 May 2014; Accepted 28 May 2014; Published 23 July 2014

Academic Editor: Zhenli He

Copyright © 2014 Hussien M. Daffalla et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Striga hermonthica is an obligate, root parasite, that limits cereal production in sub-Saharan Africa. Successful control depends on eliminating its seed reserves in soil, thereby preventing parasitism. Two experiments were conducted to evaluate the effects of salinity on germination traits and seedling growth of sorghum (cultivar Wad Ahmed) and S. hermonthica. The experiments were conducted in a factorial arrangement on the basis of completely randomized design (CRD) with 4 replications. In the first experiment, sorghum height, leaf area, and shoot and root dry weights were examined. The results displayed that, with increasing salinity level, leaf area and dry biomass were increased, while the height was decreased. In the second experiment, Striga germination and haustorium initiation percentages were examined. Among all salts, C2H4O2·NH3 inhibited Striga germination (0–15%) during conditioning or (0–25%) at germination compared to the control (75%). However, salt MgSO4·7H2O improved germination during conditioning up to 70%, while during germination CH3COONa·3H2O recorded 65% germination. Regarding haustoria initiation, results showed that C2H4O2·NH3 at all concentrations inhibits haustorium formation by 100%, while CH3COONa·3H2O at 10 µM improved haustorium formation up to 64% but still below the control (70%). Osmotic potential may significantly affect germination and radicle elongation of the parasitic weed.