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Browsing by Author Minati, Mohammed Hussein

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  • Genetic diversity and spread of glyphosate-resistant flaxleaf fleabane

    • Authors: Minati, Mohammed Hussein;  Advisor: -;  Participants: Preston, Christopher; Malone, Jenna (2020)

  • The high percentage of polymorphisms in the samples of the susceptible population (79.8%, 75%) suggests that susceptible populations of flaxleaf fleabane, even within one site, originated from a number of parents. However, the percentage of polymorphism in the resistant populations (51.5%, 66.8%) suggests that resistant populations of flaxleaf fleabane within one site could have originated from fewer parents. In addition, any site containing resistant and susceptible populations of flaxleaf fleabane may have been populated by a large number of parents, evidenced by the relatively high percentage of polymorphisms detected by amplified fragment length polymorphism (AFLP) analysis (86.5%...
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  • Interaction between Fusarium head blight and crown rot disease incidence and cultural practices on wheat in the south of Iraq, Basra province

    • Authors: Minati, Mohammed Hussein;  Advisor: -;  Participants: Mohammed-Ameen, Mohaned Khalaf (2019)

  • The results showed that the mean average of FHB and FCR was 27.2% and 31%, respectively. This displays that very nearly one-third of wheat crop planted in those 14 fields were infected by both diseases but not very severely, except in two fields (D and HM), which were devastating, 54% and 71% and 41% and 52% for FHB and FCR, respectively. The highest level of incidence for both diseases was associated with the earlier and latest planting dates 28 Oct. and 10 Dec., while the lowest was with 1, 10, and 23 Nov. A 200 and 120 kg/ha were the highest and lowest seed rates used in this study. The selected wheat fields differed in their pre-crop rotations (legume, corn, sorghum, okra, and con...
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  • Novel report on six Fusarium species associated with head blight and crown rot of wheat in Basra province, Iraq

    • Authors: Minati, Mohammed Hussein;  Advisor: -;  Participants: Mohammed-Ameen, Mohanad Khalaf (2019)

  • This is the first record of the last 6 Fusarium species from the wheat crop in Iraq as causative pathogens of FHB and FCR. Individual phylogenetic trees of 71 Fusarium isolates reconstructed based on the internal transcribed spacer (ITS) sequences showed that all isolates belonging to each of the 9 Fusarium species form monophyletic groups with identical isolates of the same species. Collective phylogenetic tree of the remaining 17 Fusarium isolates reconstructed based on translation elongation factor 1 alpha (TEF1-α) gene sequences showed that all isolates belonging to each of the 4 Fusarium species forms monophyletic groups with identical isolates of the same species.
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  • Resistance of flaxleaf fleabane (Conyza bonariensis (L.) Cronquist) to glyphosate

    • Authors: Minati, Mohammed Hussein;  Advisor: -;  Participants: Preston, Christopher; Malone, Jenna (2020)

  • To investigate the processes contributing to the evolution and spread of glyphosate-resistant flaxleaf fleabane, the resistant populations tested in dose-response experiments varied in their responses to glyphosate from two to eight times the recommended rate. The different dose responses obtained may indicate different mechanisms of resistance. This can possibly be attributed to an independent evolution of resistance. The results demonstrate that glyphosate resistance is widespread across Australia and has likely evolved multiple times as well as dispersing by seeds.