Browsing Doctoral Degrees (Plant Breeding) by Title
Now showing items 23-42 of 113
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Breeding of sweetpotato (Ipomoea batatas (L.) Lam) for drought tolerance and high dry matter content in Rwanda.
(2015)Sweetpotato is the third most important root crop next to cassava and potato in Rwanda. Drought stress remains the leading abiotic constraint to sweetpotato production in the Southern and Eastern Provinces of the country. ... -
Breeding of sweetpotato for improvement of root dry matter and β-carotene contents in Ethiopia.
(2015)Sweetpotato [Ipomoea batatas (L.) Lam] is the second major crop among the root and tuber crops in Ethiopia contributing to food and nutrition security. Especially, the orange fleshed sweetpotato (OFSP) is a low-priced ... -
Breeding potato (Solanum tuberosum L.) for high yield and resistance to late blight in Rwanda.
(2014)Potato (Solanum tuberosum L.) is one of the most important food crops in the world, and in developing countries its production has increased over the last decade. Potato has a high content of carbohydrates as a source ... -
Breeding Sorghum [Sorghum bicolor (L.) Moench] for drought tolerance and medium-maturity.
(2017)Abstract available in PDF file. -
Breeding sweetpotato (Ipomoea batatas [L.] Lam.) for drought tolerance in Kenya.
(2013)Sweetpotato (Ipomoea batatas (L.) Lam.) is an important food crop in East Africa including Kenya. The crop incurs high yield losses in production due to biotic (insect pests and diseases) and abiotic (drought, and heat) ... -
Breeding sweetpotato for improved yield and related traits and resistance to sweetpotato virus disease in Eastern Tanzania.
(2015)Sweetpotato production contributes significantly to food security and incomes of subsistence farmers in Tanzania. However, productivity of the crop is constrained by several biotic, abiotic and socio-economic factors. ... -
Breeding tef [Eragrostis tef (Zucc.) trotter] for drought tolerance in Northern Ethiopia.
(2016)Tef is the leading crop in Ethiopia for human food and animal feed. Worldwide tef is becoming a popular health food due to its gluten-free property. Productivity of tef is low in Ethiopia, with a mean of 1.6 t haˉ¹, which ... -
Breeding, evaluation and selection of Cassava for high starch content and yield in Tanzania.
(2009)High starch content is an important component of root quantity and quality for almost all uses of cassava (flour, chips, and industrial raw material). However, there is scanty information on genetic variability for dry ... -
Cassava breeding through complementary conventional and participatory approaches in western Kenya.
(2011)Participation of farmers in plant breeding programmes has been reported to increase breeding efficiency. Farmers’ participation bridges the gap between variety development and dissemination and provides an opportunity ... -
Characterisation of Taro (Colocasia Esculenta (L) Scott) germplasm collections in South Africa : towards breeding an orphan crop.
(2017)Amadumbe (Colocasia esculenta), better known as taro, is a traditional root crop widely cultivated in the coastal areas of South Africa. Taro is showing potential for commercialisation. However, very little is known about ... -
Characterization and genetic analysis of maize germplasm for resistance to northern corn leaf blight disease in Tanzania.
(2012)The majority of farmers in Tanzania have not yet adopted modern maize varieties and still cultivate landraces and open pollinated varieties (OPVs) with low production potential and susceptible to diseases like maize ... -
Characterization of sorghum [Sorghum bicolor (l.) Moench] parental lines and prediction of their hybrid performance under simulated water and population density stress.
(2006)Sorghum breeders have not made much yield improvement in new sorghum varieties in Kenya since Serena in was released in the late 1960s. KARI Mtama-1 which was released in 1993 has no yield advantage over Serena. A yield ... -
Combining ability and heterosis for stem sugar traits and grain yield components in dual-purpose sorghum (Sorghum bicolor L. Moench) germplasm.
(2009)Sorghum is the fifth most important cereal crop in the world and ranks third in Africa, and it is potentially the number one cereal for the semi-arid environments in sub-Saharan Africa. Sorghum varieties have been developed ... -
Combining Chilo partellus Swinhoe and Sitophilus zeamais Motschulsky insect pest resistance in early maturing maize hybrids.
(2016)Abstract available in PDF file. -
A comparative analysis of conventional and marker assisted selection methods in screening for resistance to maize (Zea mays L.) streak virus disease.
(2006)Maize (Zea mays L.) streak virus disease (MSD) is the most important virus disease in Africa but farmers are unaware of its status. A project was initiated to assess the current status of MSD and to breed for its resistance. ... -
Consumer acceptability, adaptability and genetic analysis of orange pro-vitamin A maize hybrids in KwaZulu-Natal province of South Africa.
(2018)Diets of most people in sub-Saharan Africa are composed of mainly cereals that frequently lack most nutrients, such as Vitamin A. Vitamin A deficiency is the leading cause of preventable childhood blindness and increases ... -
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 ... -
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 ...