Browsing Doctoral Degrees (Plant Breeding) by Title
Now showing items 48-67 of 128
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Determining heterotic orientation of South African maize inbred lines towards USA temperate and CIMMYT- tropical testers and genetic analyses under contrasting environments.
(2018)Drought and low soil fertility are major abiotic stresses limiting maize productivity in South Africa. Developing drought and low nitrogen-tolerant varieties is part of a long-term solution to improved maize productivity ... -
Developing pre-breeding tools for the miracle plant [Synsepalum dulcificum (Schumach & Thonn.) Daniell]: implications for genomic selection strategies optimization.
(2022)The miracle plant [Synsepalum dulcificum (Schumach & Thonn) Daniell] is an evergreen orphan shrub species originating in West Africa that produces red berries known as miracle fruits. As a unique natural source of ... -
Development and application of SNP marker for low phytic acid gene (Ipa1-1) with studies on the effect of low phytic acid on seed germination, vigour and yield in maize.
(2010)Maize grain contains high levels of phytic acid which chelates iron, zinc and other micronutrients as it passes through the digestive systems of monogastric consumers reducing their bioavailability. Breeding for low phytic ... -
Development of an advanced generation breeding strategy for Eucalyptus Nitens (Deanne and Maiden) Maiden.
(2013)The objective of this study was to develop and implement an advanced generation breeding programme at the Institute for Commercial Forestry Research (ICFR) to manage and integrate the many and disjunct breeding and ... -
Development of cassava (Manihot esculenta Crantz) cultivars for resistance to cassava mosaic disease in Zambia.
(2011)Despite the increasing number of farmers growing cassava in Zambia, yield per hectare has remained low at 5.8 t ha-1. The major constraints contributing to low yields are pests and diseases of which cassava mosaic disease ... -
Development of high yielding and early maturing potato (Solanum tuberosum L.) genotypes with resistance to Phytophthora infestans in Uganda.
(2017)Abstract available in PDF file. -
Development of high yielding pigeonpea (Cajanus cajan) germplasm with resistance to Fusarium wilt (Fusarium udum) in Malawi.
(2007)Pigeon pea [Cajanus cajan (L.) Millspaugh] is a very important grain legume crop for food, cash and firewood in Malawi. However, its production is affected by Fusarium wilt (Fusarium udum Butler), which causes up to 100% ... -
Development of high yielding potato (Solanum tuberosum L.) : genotypes with resistance to bacterial wilt (Ralstonia solanacearum) for the Kenyan highlands.
(2014)Bacterial wilt caused by Ralstonia solanacearum race 3 (R3bv2A), is an important disease contributing to low potato yields in temperate areas and tropical highlands. In Kenya, the disease is widespread in most potato growing ... -
Development of pigeonpea [Cajanus cajan (L.)] hybrids for the semi-arid Kenya.
(2011)Pigeonpea (Cajanus cajan (L.) Millsp.) is cultivated by many farmers in the semi-arid areas of Kenya as a source of food and cash. However, the yields have remained low, ranging between 500 to 800 kg haˉ¹. Apart from ... -
Diversity analysis and breeding for maize weevil (Sitophilus zeamais Motschulsky) and larger grain borer (Prostephanus truncatus horn) : resistance in productive maize germplasm in Malawi.
(2014)Maize (Zea mays L.) is the main staple food crop in Malawi grown by 97% of small holder farmers. However, the potential maize yields are reduced by postharvest losses of grain in storage due to the larger grain borer ... -
Diversity analysis of South African sorghum genotypes using agronomic traits, SSR markers and protein content and amino acid composition.
(2015)Sorghum is an important food security crop and ranks fifth after wheat, rice, maize, and barley in total area of production globally. In South Africa, sorghum is mainly grown for food and livestock feed both by small-holder ... -
Evaluation of selected free-living diazotrophic bacteria for plant growth promotion and biological control of damping-off fungi.
(2013)Inoculation with free-living diazotrophic bacteria is well documented to enhance vegetative growth and yield increases of various crops coupled with suppression of sublethal pathogens. The use of microbial inoculants has ... -
Farmer perceptions and genetic studies of rosette disease in groundnut (Arachis hypogaea L.) in northern Mozambique.
(2011)Groundnut (Arachis hypogaea L.) is an important food and cash crop in Mozambique and production has been constrained by lack of high-yielding cultivars and disease infection. Objectives of this study were: 1) to identify ... -
Genetic analyses for resistance to soybean rust (Phakopsora pachyrhiz) and yield stability among soybean genotypes in Kenya.
(2012)Soybean (Glycine max (L.) Merr.) occupies an important position in the world economy of the feedstock of high quality protein and vegetable oils. However, its production is threatened by, Asian soybean rust (ASR), caused ... -
Genetic analyses of drought tolerance and resistance to late blight among potato genotypes.
(2015)Potato is one of the valuable crops in Ethiopia serving as a source of food and income for smallholder farmers. About 70% of the country’s arable land is suitable for potato production. Despite the rapid growth of the total ... -
Genetic analysis and characterization of faba bean (vicia faba) for resistance to chocolate spot (Botrytis fabae) disease and yield in the Ethiopian highlands.
(2014)Faba bean (Vicia faba L.) is one of the most important food legumes cultivated in Ethiopia. However, its production has been limited by several factors, among which include chocolate spot (CS) disease caused by the fungus ... -
Genetic analysis and improvement of pearl millet for rust resistance and grain yield in Uganda.
(2014)Pearl millet is a sustainable food security crop for people living in areas with extreme drought and heat conditions. Like in many countries where it is grown, in Uganda the crop grows in semi-arid zones characterised by ... -
Genetic analysis and response to selection for resistance to two stem borers, Busseola fusca and Chilo partellus, in tropical maize germplasm.
(2014)Maize is the principal staple food in sub-Saharan Africa (SSA), but production lags behind population growth. The African stem borer, Busseola fusca, Fuller (Lepidoptera, Noctuidae), and the spotted stem borer, Chilo ... -
Genetic analysis and selection for maize weevil resistance in maize.
(2013)The maize weevil (Sitophilus zeamais Motschulsky) is one of the most destructive storage insect pest of maize (Zea mays L.) in tropical Africa and worldwide, especially when susceptible varieties are grown. Therefore, grain ...