فهرست مطالب

Research in Weed Science - Volume:6 Issue: 1, May 2023

Journal of Research in Weed Science
Volume:6 Issue: 1, May 2023

  • تاریخ انتشار: 1402/02/11
  • تعداد عناوین: 3
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  • Marjan Atghaei *, MohammadReza Rezaie, Amin Baghizadeh, Hossein Mirshekarpour Pages 1-9

    The triticale plant was produced by humans in the late 19th century from the combination of wheat and rye. This plant is much richer than wheat in terms of nutritional value and combined percentage of elements. In the last few years, there have been reports of diseases and damages of the triticale plant. Irradiation of mixture gamma and beta rays with a suitable dose increases resistance, improves various traits, and increases the percentage of number of effective germinations, growth, seedling length, etc. in triticale plants. The simulation results with MCNPX code in the period of 1 to 6 days, with iodine 131 source (mixture of gamma-beta rays) and with 200mCi activity, doses of 23, 43, 50, 63, 80, 95, and 110 Gy has been obtained and in the stage of planting samples different and normal, the 63Gy sample performed better than other samples in terms  number of germinations effective and growth index

    Keywords: Triticale, number of effective germinations, Gamma, Beta Radiation, dose
  • Awadallah B. Dafaallah *, Samah Alhadari, Mohamed Zaroug, Nosiba Basher, Nasir Ibrahim Pages 10-22
    Water weeds are notorious for causing various troubles. Gezira Scheme in Sudan is being choked by the increasing proliferation of aquatic weeds. This study aimed to look at the association between aquatic weed abundance and water quality in some canals in Sudan's Gezira Scheme in the year 2018. The study area included 18 sites, i.e. 6 canals classified into 3 parts (beginning, middle, and end). The abundance of aquatic weed species was evaluated visually at each site using a scale of (0-5), and water quality was examined by assessing physical, chemical, and biological properties. Descriptive statistics and variance analysis were used to analyze the data. The findings revealed that community structure was comprised of significant changes in the abundance of aquatic weed species throughout the year, as follows: floating (1.7-2.1), emergent (0.2-0.3), submergent (0.3), and bank aquatic weeds (1.5-2.2). In winter and summer, the most abundant species were Vossia cuspidata (4.0) and Cynodon dactylon (3.0-3.7). Temperature and turbidity were shown to be the most critical elements in restricting the development and abundance of aquatic weeds, along with alkalinity, salinity, and nutrients. The canals are habitat to a diverse range of living organisms, including animals, bacteria, fungi, and algae, which indicates the water's appropriateness for the presence and development of aquatic weeds. All of these insights will be valuable in the management of aquatic weeds in Gezira scheme's canals.
    Keywords: Abundance, Frequency, Gezira, Sudan, Water, Weeds
  • Behshad Valizadeh *, MohammadReza Rezaie, Seyed AmirHosein Feghhi, Yassin Hydarizadeh Pages 23-29

    Bacterial infections have increased due to overuse of antibiotics and this issue has caused problems. One of the methods for destroy of infection is Ultraviolet radiation which can cause various behaviors in Bacteria and may eventually lead to genetic mutation. In this paper we study two types of bacteria such as Bacillus cereus and Bacillus Subtilis resistance before and after Ultraviolet radiation (UV-C). The susceptibility and resilience of bacteria to UV light were examined using four different kinds of antibiotics. Two strains were irradiated with Ultraviolet radiation and they were cultured in Mueller-Hinton Agar (MHA) and they were stored at 370 C and the growth of these two Bacteria was measured before and after irradiation. Irradiation was performed by using UV-C lamp. Antibiotic susceptibility of these two strains was investigated by using disk diffusion. Ultraviolet radiation and adding Antibiogram disks to the MHA culture caused Bacteria resistant to some disks. Bacterial colonies have become larger than before the ultraviolet radiation. According to the data, the number of bacteria declines as radiation exposure duration rises, suggesting that radiation could alter bacterial physiology.

    Keywords: Mueller Hinton Agar, Ultraviolet Radiation, Antibiotic, Antibiogram