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Field Screening of Lesotho and South African Wheat Cultivars for Russian Wheat Aphid Resistance

Advances in Entomology 2016年第5期4卷 268-278页

作者： Astrid Jankielsohn pitso masupha Lintle Mohase Crop Protection ARC-Small Grain Institute Bethlehem South Africa Department Crop Protection National University of Lesotho Roma Lesotho Department of Plant Physiology University of the Free State Bloemfontein South Africa

Russian wheat aphid (Diuraphis noxia) is an international wheat pest and was first recorded in South Africa in 1978 in the Bethlehem area in the Eastern Free State. Le-sotho lies adjacent to one of the largest wheat producing areas in South Africa, the Eastern Free State, where winter wheat and facultative types are cultivated under dry land conditions. Wheat (Triticum aestivum L.) is an important crop adapted to all agro-ecological zones of Lesotho. Russian wheat aphid may have a significant impact on wheat yield. No monitoring or pest control is being done in Lesotho and at this stage there is very little information on the Russian wheat aphid resistance of wheat culti-vars cultivated in Lesotho. In view of this it is important to monitor the distribution of Russian wheat aphid biotypes in Lesotho and determine the level of Russian wheat aphid resistance in local Lesotho wheat cultivars. Two local Lesotho wheat cultivars, Bolane and Makalaote were screened together with South African cultivars Elands, Matlabas, Senqu, PAN3379, PAN3118 and SST387, in the glasshouse against all four known biotypes that occur in South Africa. All these cultivars were also planted in 5 m plots in the field at two localities Leribe and Roma in the lowlands of Lesotho. These cultivars were screened in the field for Russian wheat aphid resistance. The predomi-nant Russian wheat aphid biotypes in these areas were also determined. The Lesotho cultivar, Bolane had resistance against RWASA2 in the glasshouse, while Makalaote did not have any Russian wheat aphid resistance in either the glasshouse or field screenings. To contribute to food security an increasing wheat yield potential is a high priority. Russian wheat aphid has been included in the list of important international cereal pests. Russian wheat aphid adapts to changing environments and taking their ecology, distribution, virulence patterns, and variability into account is important in minimizing the gap between actual and attainab

关键词： Russian Wheat Aphid Biotypes Wheat Cultivars Lesotho Field Screening Resistance

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Determination and Quantification of Proximate and Mineral Composition for 20 Improved Sorghum Varieties Grown in Machache, Lesotho

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Food and Nutrition Sciences 2024年第8期15卷 744-758页

作者： Malefane Ts’ephe Puleng Letuma Karabelo Khomongata Fisseha Itanna Mamoipone Sebitia Monica Lephole pitso masupha Department of Crop Science Faculty of Agriculture National University of Lesotho Maseru Lesotho Department of Soil Science and Natural Resource Management Faculty of Agriculture National University of Lesotho Maseru Lesotho School of Interdisciplinary Research and Graduate Studies (SIRGS) University of South Africa (UNISA) Pretoria South Africa Department of Agricultural Research (DAR) Ministry of Agriculture Food Security and Nutrition Maseru Lesotho

Twenty varieties of improved sorghum were grown in Machache at the Department of Agricultural Research station, located (29˚22'60"S and 27˚52'0"E) in the central foothills of Lesotho in Maseru district. The varieties were planted in a randomized complete block design. At maturity, they were harvested, dried, threshed, milled and analyzed in the crop science laboratory at the National University of Lesotho. The proximate and mineral contents were analyzed from samples in a completely randomized design with three replicates. The proximate composition parameters measured were crude proteins, crude fiber, crude fat, moisture content, and carbohydrates. The minerals analyzed were, phosphorus, sodium, calcium, magnesium, potassium, copper, zinc, iron, and magnesium. The results showed the nutritional contents ranging from (4.7% - 16.16%), (0.35% - 2.10%), (1.25% - 4.00%), (71.60% - 84.06%), (5.53% - 10.18%), for protein, fat, fiber and carbohydrate, and moisture content, respectively. Mineral content ranged from (1342.96 - 3500.34 mg/kg), (25.97 - 185.25 mg/kg), (50.71 - 511.71 mg/kg), (29.35 - 4542.13 mg/kg), (577.19 - 3041.52 mg/kg), (0.25 - 4.07 mg/kg), (1.96 - 18.61 mg/kg), (67.14 - 122.96 mg/kg), (4.73 - 11.39 mg/kg) for phosphorus, sodium, calcium, magnesium, potassium, copper, zinc, iron, and manganese respectively. The following varieties were found to have the highest and appreciable amounts of nutrients and minerals that are crucial in the country diet;protein content was KARI Mtama 1, zinc, IESX 16 2533-SB-SSI-19, and iron IESX 16 2535-SB-SSI-34.

关键词： Varieties Sorghum Proximate Mineral

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A Review on Cooperative Robotic Arms with Mobile or Drones Bases

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International Journal of Automation and computing 2021年第4期18卷 536-555页

作者： Larona pitso Ramalepa Rodrigo S.Jamisola Jr. Botswana International University of Science and Technology Palapye 10071Botswana

This review paper focuses on cooperative robotic arms with mobile or drone bases performing cooperative tasks. This is because cooperative robots are often used as risk-reduction tools to human life. For example, they are used to explore dangerous places such as minefields and disarm explosives. Drones can be used to perform tasks such as aerial photography, military and defense missions,agricultural surveys, etc. The bases of the cooperative robotic arms can be stationary, mobile(ground), or drones. Cooperative manipulators allow faster performance of assigned tasks because of the available "extra hand". Furthermore, a mobile base increases the reachable ground workspace of cooperative manipulators while a drone base drastically increases this workspace to include the aerial *** papers in this review are chosen to extensively cover a wide variety of cooperative manipulation tasks and industries that use *** cooperative manipulation, avoiding self-collision is one of the most important tasks to be performed. In addition, path planning and formation control can be challenging because of the increased number of components to be coordinated.

关键词： Cooperative arms mobile manipulator aerial manipulator mobile base drone base cooperative tasks

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Fostering Creativity and Entrepreneurial Self-efficacy in Engineering Undergraduates： Curriculum Power and Context in One University of Technology

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Chinese Business Review 2012年第1期11卷 138-143页

作者： Malefane Johannes Lebusa Teboho pitso Vaal University of Technology Vanderbijlpark South Africa

Through the Sequential Mixed Methods Approach, 24 final year power engineering students underwent 12 learnshops on creativity and entrepreneurship with an attempt to foster creativity and entrepreneurial self-efficacy among them. Pre- and post-test on creativity using Torrance＇s Test of Creativity （TTCT） and Entrepreneurial Self-efficacy questionnaires were used to determine the level of both creativity and entrepreneurial self-efficacy The findings of the study show that a significant leap in how teaching and learning takes place is necessary if we are to properly prepare students for the 21st century knowledge economy and that active participation, confidence and ideas generation taking place under teamwork and informal settings are a way forward and to harness the two constructs.

关键词： creativity entrepreneurial self-efficacy entrepreneurship outcome-based education University ofTechnology undergraduate students

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