Browsing Theses and Dissertations (University of Pretoria) by Supervisor "Geerthsen, Peter J.M."
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Browsing Theses and Dissertations (University of Pretoria) by Supervisor "Geerthsen, Peter J.M."
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Diallel crosses between sources of Black Shank (Phytophthora parasitica var. nicotianae) resistance (University of Pretoria, 2006-06-24)The black shank (Phytophthora parasitica var. nicotianae) fungus is a very destructive tobacco disease which is responsible for great losses to farmers worldwide. This disease is also a problem in South Africa, as the most ...
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(University of Pretoria, 2004)When testing nine different sunflower cultivars in 32 South African environments (location x year), an Additive Main Effects and Multiplicative Interaction analysis (AMMI) identified sizeable genotype by environment (GxE) ...
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