Browsing Articles: Department of Water and Agricultural Resources Management by Subject "resistance"

Now showing items 1-6 of 6

    • Determination of Post Striga Attachment Resistance in Selected Resistant Sorghum Lines in Kenya 

      Manene, Diana W.; Njoka, Fredrick M. (International Knowledge Press, 2017-05)
      Breeding for Striga resistance in sorghum and other cereals is recognized as the most sustainable control measure, however there is a lack of cereal germplasm that exhibit post attachment to Striga that limits this ...

    • Determination of Stem Rust Ug99 Disease Severity in Selected Wheat Backcrosses in Kenya 

      Tubei, Jackline E.; Ombori, Omwoyo; Njau, Peter N.; Njoka, Fredrick M. (2017-05)
      Stem rust (Puccinia graminis tritici) is a disease of economic importance in wheat (Triticum aestivum L.) worldwide. The objective of this study was to determine the disease severity of the BC1F1 plants in the nursery at ...

    • Introgression of Stem Rust Resistance into Popular Kenyan Wheat Varieties to Improve Production 

      Jackline, Tubei E.; Njoka, Fredrick M.; Ombori, Omwoyo; Njau, Peter N. (2018-02)
      Aim: The objective of this study was to assess the introgression of the stem rust resistance genes into the BC1F1 plants using molecular markers. Place and Duration of Study: Field experiments were carried out in a ...

    • New sources of resistance to spotted stem borer, Chilo partellus in sorghum 

      Muturi, Phyllis W.; Rubaihayo, P.; Mgonja, M.; Kyamanywa, S.; Kibuka, J.; Sharma, H.C. (2012)
      The lepidopteran Chilo partellus Crambid, an introduced pest in East and southern Africa from Asia, is the most economically important stem borer species infesting cereals in Africa. Chilo partellus causes more than 40% ...

    • Novel source of sorghum tolerance to the African stem borer, Busseola fusca 

      Muturi, Phyllis W.; Rubaihayo, P.; Mgonja, M.; Kyamanywa, S.; Sharma, H.C.; Hash, C.T. (Academic Journals, 2012-08)
      Sorghum (Sorghum bicolor) is an important cereal food crop in semi-arid tropics, but its productivity is curtailed mainly by insect pests and diseases. The African stem borer, Busseola fusca Fuller (Lepidopteran: Noctuidae), ...

    • Pathogenicity of Colletotrichumkahawae in Kenya 

      Njoka, Fredrick M.; Owaka, Margaret; Omondi, Chrispine; Kathurima, Elijah (2017-05)
      This study was aimed at determining the virulence diversity of Colletotrichumkahawae, and their correlation with coffee growing regions and interaction with coffee varieties in Kenya. A total of 34 single conidia isolates ...