Articles by Keyword: Hybrids

Search results for Hybrids

We found 19 results for you
  1. Resistance of South African maize hybrids to maize streak virus

    Resistance of South African maize hybrids to maize streak virus

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Data from maize cultivar trials at Vaalharts over a five-year period were used to evaluate the level of resistance to maize streak virus (MSV) in commercial maize hybrids, and to determine the potential value of such resistance. Maize hybrids presently...
  2. Susceptibility of maize hybrids to grey leaf spot under two tillage systems in South Africa

    Susceptibility of maize hybrids to grey leaf spot under two tillage systems in South Africa

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Grey leaf spot (Cercospora zeae-maydis Tehon and E.Y. Daniels) has seriously decreased the yields of maize in KwaZulu-Natal, South Africa, and has been identified in neighbouring provinces and countries. Since no commercially grown hybrids have been identified to be resistant...
  3. Resistance of sorghum hybrids to ergot caused by <em>Claviceps africana</em>

    Resistance of sorghum hybrids to ergot caused by <em>Claviceps africana</em>

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Thirty-one sorghum hybrids were evaluated for ergot ‘escape’ resistance at Bethlehem and Potcherstroom during the 1996/97 and 1997/98 seasons. Trials were designed so that flowering and artificial inoculation occurred over a range of flowering dates and thus, ergot potentials Non-linear...
  4. Additive mean effects and multiplicative interaction analysis of maize yield trials in South Africa

    Additive mean effects and multiplicative interaction analysis of maize yield trials in South Africa

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Thirty five maize hybrids were evaluated over 98 environments for genotype x environment interaction (GEI) and yield stability under dry land conditions during the 2003 to 2006 seasons in the eastern and western maize production regions of South Africa. The...
  5. Targeting of early to intermediate maize hybrids for yield performanceand yield stability using SREG model

    Targeting of early to intermediate maize hybrids for yield performanceand yield stability using SREG model

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    The effectiveness of targeting and predicting maize (Zea mays.L) hybrid performance is difficult when the magnitude of genotype x environment (GE) interaction and yield prediction cannot be interpreted and is only based on genotypes (G) and GE means. The traditional...
  6. Early establishment performance of local and hybrid maize under two water stress regimes

    Early establishment performance of local and hybrid maize under two water stress regimes

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Maize (Zea mays L.) is the major grain crop in South Africa where most subsistence farmers still plant landraces. The objective of this study was to compare two landrace selections of maize with two hybrids popular among small-scale farmers in...
  7. Host suitability of selected South African maize genotypes to the root-knot nematode species <em>Meloidogyne incognita</em> race 2 and <em>Meloidogyne javanica</em>: A preliminary study

    Host suitability of selected South African maize genotypes to the root-knot nematode species <em>Meloidogyne incognita</em> race 2 and <em>Meloidogyne javanica</em>: A preliminary study

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Thirty-one commercial maize (Zea mays L.) hybrids and open-pollinated varieties (OPV’s) were screened in separate greenhouse trials with a resistant inbred line MP712W as reference genotype for host suitability to Mel-oidogyne incognita race 2 and Meloidogyne javanica. Approximately 10 000...
  8. Prospects of eucalypt species, including interspecific hybrids from South Africa, for hardwood plantations in marginal subtropical environments in Queensland, Australia

    Prospects of eucalypt species, including interspecific hybrids from South Africa, for hardwood plantations in marginal subtropical environments in Queensland, Australia

    Item type: Journal Article • Journal: The Southern African Forestry Journal
    In Australia, there has been rapid expansion in recent years of commercial plantations of hardwood timber species, especially of Eucalyptus and Corymbia. In tropical and sub-tropical Queensland the land most likely to be readily available for this planting is in...
  9. Interspecific hybrids in Zimbabwe: status review and future challenges

    Interspecific hybrids in Zimbabwe: status review and future challenges

    Item type: Journal Article • Journal: The Southern African Forestry Journal
    Several F1 eucalypt and pine interspecific hybrids have been tested in Zimbabwe. The first hybrids tests were of pine species, and these were established in 1973. The results from these early tests were not spectacular and interest in hybrids was...
  10. Yield Potential of selected <em>Eucalyptus</em> genetic stock on the sandy soils of the South African Cape West Coast

    Yield Potential of selected <em>Eucalyptus</em> genetic stock on the sandy soils of the South African Cape West Coast

    Item type: Journal Article • Journal: The Southern African Forestry Journal
    Land available for afforestation in the Western Cape Region has largely been subordinate to agriculture. Eucalypt species have never been tested intensively along the West Coast. Climatic matching suggests planting of species from West Australia as native habitat introductions, or...