النشر العلمي

  • Study of Some Factors affecting Sugar Color at Alguneid Sugar Factory

published in Gezira Journal of Engineering and Applied Sciences

  • Influence of DMBQ, sorghum root extracts and temperature on haustorium initiation of Striga hermonthica (Del.) Benth.

Tow in vitro experiments were conducted in laboratory to study the influence of 2,6-dimethoxy-ρ-benzoquinone at 2.5 - 10.0 mM and sorghum root extract at 3.1 – 100 g/L on haustorium initiation of Striga hermonthica (Del.) Benth. at different level of temperature (20 – 35°C). Treatments were laid in a factorial completely randomized design with four replicates. Striga germilings were examined for haustorium initiation 4 days of germination. Data were collected and subjected to analysis of variance procedure. Separation of means was done using Duncan's Multiple Range Test ((P ≤ 0.05). The results revealed that, 2,6-dimethoxy-ρ-benzoquinone (DMBQ) and sorghum root extract (SRE) at all concentrations tested has potentiality to induce haustoria in four–days-old S. hermonthica germlings. It seems that, the optimum concentration of DMBQ and SRE to induce haustorium initiation was 20 mM and 25 g/L, respectively. Moreover, the optimum temperature for S. hermonthica germlings to produce haustoria was 30○C and at temperature higher than 30○C the germiling may begin to lose this ability.

Keywords: Striga, haustorium, DMBQ, extracts, temperature, sorghum.

published in Neelain Journal of Science and Technology

  • Allelopathic effects of pigweed (Amaranthus viridis L.) on seed germination and seedling growth of some poaceous crops

Laboratory and greenhouse experiments were carried out at the Faculty of Agricultural Sciences, University of Gezira, Sudan in season 2014/15 to study the allelopathic effects of aboveground parts of pigweed (Amaranthus viridis L.) on seed germination and seedling growth of some poaceous crops. Laboratory experiments were conducted to study the allelopathic effects of aqueous extract of aboveground parts of pigweed on seed germination of sorghum (Sorghum bicolor [L.] Moench), millet (Pennisetum glaucum [L.] R. Br.), maize (Zea mays L.) and wheat (Triticum vulgare L.). Six concentrations (0, 20, 40, 60, 80 and 100%) of the aqueous extract of aboveground parts were prepared from the stock solution (50 g / l). Treatments, for each crop, were arranged in completely randomized design with four replicates. The seeds were examined for germination at three days after initial germination. Greenhouse experiments were conducted to study the allelopathic effects of powder of aboveground parts of pigweed on seedling growth of the same crops. The powder of aboveground parts was incorporated into the soil at rate of 0, 1, 2, 3, 4 and 5% on w/w bases in pots. Treatments, for each crop, were arranged in completely randomized design with four replicates. The experiments were terminated at 30 days after sowing and plant height, number of leaves and root length of crop seedlings were measured as well as seedlings fresh and dry weight. Data were collected and subjected to analysis of variance procedure. Means were separated for significance using Duncan`s Multiple Range Test at p £ 0.5. The results showed that the aqueous extract of aboveground parts of pigweed significantly reduced seed germination of the tested poaceous crops and there was direct negative relationship between concentration seed germination. Also, the results showed that incorporating powder of aboveground parts into the soil significantly decreased plant height, number of leaves and root length of crop seedlings as well as seedlings fresh and dry weight. In addition, the reduction in seedling growth was increased as the powder increased in the soil. Based on results supported by different studies, it was concluded that pigweed has allelopathic affects on seed germination and seedling growth of the tested poaceous crops.

Keywords: Allelopathic; Allelochemicals; Pigweed; Amaranthus; Poeaeae; sorghum; millet; maize; wheat

published in University of Bakht Alruda Scientific Journal

  • Effect of intercropping of Sorghum bicolor cv and Sorghum sudanese with local variety Dolichos lablab on the level of hydrocyanic acid. Journal of Animal and Veterinary Advances 5(9): 749-752

El Obied, G. H.; Mahamoud, A.; Dyab, S. K.; Mahamoud, M. A., 2006      :

                                                                                                                                            Abstract

This study was conducted at Shukaba Livestock Research Station (SLRS) to investigate the effect of intercropping of S. sudanese and S. bicolor cv Wad Ahmed with Dolichos lablab on the level of hydrocyanic acid (HCN) in the intercropped plants compared to their corresponding mono cropping plants. It was shown that the level of HCN in S. bicolor cv Wad Ahmed was significantly (P<0.01) higher than in S. sudanese

published in journal of animal and veterinary advances 5(9): 749 - 752

  • Effect of intercropping of Sorghum bicolor cv and Sorghum sudanese with local variety Dolichos lablab on the level of hydrocyanic acid. Journal of Animal and Veterinary Advances 5(9): 749-752

El Obied, G. H.; Mahamoud, A.; Dyab, S. K.; Mahamoud, M. A., 2006      :

                                                                                                                                            Abstract

This study was conducted at Shukaba Livestock Research Station (SLRS) to investigate the effect of intercropping of S. sudanese and S. bicolor cv Wad Ahmed with Dolichos lablab on the level of hydrocyanic acid (HCN) in the intercropped plants compared to their corresponding mono cropping plants. It was shown that the level of HCN in S. bicolor cv Wad Ahmed was significantly (P<0.01) higher than in S. sudanese

published in journal of animal and veterinary advances 5(9): 749 - 752

© 2016 University Of Gezira. All rights reserved | Design by Informatics Administration