Articles by Author: Hussein A Shimelis

Search results for Hussein A Shimelis

We found 13 results for you
  1. Principal agronomic and seed oil traits in the industrial oil crop vernonia (<em>Centrapalus pauciflorus</em> var. <em>ethiopica</em>)

    Principal agronomic and seed oil traits in the industrial oil crop vernonia (<em>Centrapalus pauciflorus</em> var. <em>ethiopica</em>)

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Vernonia (Centrapalus pauciflorus) is potentially a new crop that could offer naturally epoxidised industrial oil. The objective of this study was to apply principal component analyses on agronomic traits, seed oil and fatty acid compositions in vernonia to identify the...
  2. A genetic diversity analysis of South African sorghum genotypes using SSR markers

    A genetic diversity analysis of South African sorghum genotypes using SSR markers

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Diverse landraces of sorghum (Sorghum bicolor (L.) Moench) are widely grown by smallholder farmers in South Africa. The objective of the study was to assess the genetic diversity present in South African sorghum genotypes using genetic distances as measured by...
  3. Phenotypic characterisation of sweetpotato genotypes grown in East and Central Africa

    Phenotypic characterisation of sweetpotato genotypes grown in East and Central Africa

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Identification of genetic variability and interrelationships among germplasm collections is fundamental to select parents with complementary traits for plant breeding programmes. The aim of this study was to characterise and identify breeding parents among 54 sweetpotato genotypes grown in Rwanda,...
  4. Assessment of sweetpotato farming systems, production constraints and breeding priorities in eastern Tanzania

    Assessment of sweetpotato farming systems, production constraints and breeding priorities in eastern Tanzania

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Sweetpotato is an important food security crop in Tanzania. The crop is grown under diverse farming systems with very low yields. The objective of this study was to assess the present sweetpotato farming systems, farmers’ preferences, production constraints and breeding...
  5. Genetic diversity of bottle gourd (<em>Lagenaria siceraria</em> (Molina) Standl.) landraces of South Africa assessed by morphological traits and simple sequence repeat markers

    Genetic diversity of bottle gourd (<em>Lagenaria siceraria</em> (Molina) Standl.) landraces of South Africa assessed by morphological traits and simple sequence repeat markers

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Bottle gourd (Lagenaria siceraria (Molina) Standl.) is an important crop in rural communities in South Africa but it remains under-researched. The objective of this study was to assess the genetic diversity present amongst bottle gourd landraces grown by smallholder farmers...
  6. Sorghum production systems and constraints, and coping strategies under drought-prone agro-ecologies of Ethiopia

    Sorghum production systems and constraints, and coping strategies under drought-prone agro-ecologies of Ethiopia

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Sorghum is one of the most important cereal crops worldwide after wheat, rice, maize and barley. Examining the present socio-economic conditions of sorghum-producing farmers in different agro-ecologies in Ethiopia is of importance for the design of improvement strategies. The objectives...
  7. Key maize production constraints and farmers’ preferred traits in the mid-altitude maize agroecologies of northern Tanzania

    Key maize production constraints and farmers’ preferred traits in the mid-altitude maize agroecologies of northern Tanzania

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Maize productivity in Tanzania is very low, owing to various biotic and abiotic production constraints. Examining production constraints and farmers’ preference in maize-growing agroecologies will assist in designing improvement strategies based on farmers’ priorities. The objective of this study was...
  8. Selection of drought-tolerant tef (<em>Eragrostis tef</em>) genotypes using drought tolerance indices

    Selection of drought-tolerant tef (<em>Eragrostis tef</em>) genotypes using drought tolerance indices

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Drought stress is one of the major abiotic constraints affecting production and productivity of tef (Eragrostis tef). Genetic resources and selection methodologies are among the prerequisites to improve the efficiency of breeding for drought tolerance. The objectives of this study...
  9. Determination of optimum ethylmethanesulfonate conditions for chemical mutagenesis of selected vernonia (<em>Centrapalus pauciflorus</em>) accessions

    Determination of optimum ethylmethanesulfonate conditions for chemical mutagenesis of selected vernonia (<em>Centrapalus pauciflorus</em>) accessions

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Chemical mutagenesis could potentially increase allelic diversity and address genetic erosion in vernonia (Centrapalus pauciflorus) breeding programmes. The objective of this study was to determine an optimum treatment combination, i.e. exposure duration, temperature and ethylmethanesulfonate (EMS) dose that would reduce...
  10. Variation of oil content and fatty acid composition in selected lines of vernonia (<em>Vernonia galamensis</em> variety <em>ethiopica</em>)

    Variation of oil content and fatty acid composition in selected lines of vernonia (<em>Vernonia galamensis</em> variety <em>ethiopica</em>)

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Vernonia (Vernonia galamensis) is a new industrial crop that could offer a naturally epoxidized oil with great economic value. The oil content and fatty acid composition of 10 selected lines of V. galamensis variety ethiopica were analysed to study the...