Articles by Keyword: Multiple Paternity

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  1. Molecular research on the systematically challenging smoothhound shark genus <em>Mustelus</em>: a synthesis of the past 30 years

    Molecular research on the systematically challenging smoothhound shark genus <em>Mustelus</em>: a synthesis of the past 30 years

    Item type: Journal Article • Journal: African Journal of Marine Science
    The species-rich genus Mustelus (smoothhounds) of the shark family Triakidae is one of the most bio-economically important groups of elasmobranchs in the world’s oceans. Despite the commercial value of Mustelus, the systematics of the group remains largely unresolved and there...
  2. Distribution, Size and Ownership of Forests in the Southern Cape

    Item type: Journal Article • Journal: South African Forestry Journal
    Indigenous forest of the southern Cape as delimited on 1:50 000 maps was analysed for distribution, size and ownership in six landscape zones: mountains, foothill, coastal platform, river valley, coastal scarp and dunes. I tested the hypothesis that forest distribution...
  3. A preliminary investigation of woody plant increase in the western Transvaal and implications for veld assessment

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    The relationships between tree density and indices of pasture and soil condition were examined in Western Transvaal grasslands where Acacia karroo had increased following disturbance. The correlation between tree density and pasture condition was not linear, indicating a threshold in...
  4. Die produksie van smutsvingergras in die wes‐transvaal<sup>1</sup>

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    Die produksie van Smutsvingergras (Digitaria eriantha) is in yerskeie proewe in die Hoëveldstreek, op Potchefstroom, in die verlede bepaal. Hierdie proewe is oor ‘n lang periode op verskillende grondsoorte en met verskillende bemestingspeile uitge‐voer. Alle resultate is saamgevoeg en met...
  5. The development of veld assessment in the northern Transvaal savanna II. Mixed bushveld

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    Differences in pasture species composition as a consequence of grazing were used to develop a proposed classification of pasture species response to grazing, for both the Combretum apiculatum and the Acacia tortilis communities of the northern Transvaal mixed bushveld. The...
  6. Controlling excessive growth in cotton by multiple applications of low concentrations of mepiquat chloride

    Controlling excessive growth in cotton by multiple applications of low concentrations of mepiquat chloride

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Excessive vegetative growth of cotton occurs under favourable growing conditions and this contributes to yield losses. Low concentrations of mepiquat chloride (1, 1-dimethylpiperidinium chloride) were applied to vigorous, growing cotton by means of two or more sprays at different time...
  7. The effects of environment on the relationship between cotton fibre properties and yarn characteristics

    The effects of environment on the relationship between cotton fibre properties and yarn characteristics

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Cotton fibre samples from three different localities were commercially processed into 15 and 30 tex ring spun yarns and 20, 30 and 50 rotor spun yarns. Multiple regression analyses were used to relate yarn tenacity and irregularity to the different...
  8. A slope sequence of Podzols in the southern Cape, South Africa 1. Physical and micromorphological properties

    A slope sequence of Podzols in the southern Cape, South Africa 1. Physical and micromorphological properties

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    In South Africa the characteristics of Podzols, with or without placic horizons, and the complex processes involved in their formation, are generally still poorly understood. To investigate both these aspects thoroughly, these soils were studied in the landscape context, described...
  9. Pistilloidy in common wheat resulting from a spontaneous mutation

    Pistilloidy in common wheat resulting from a spontaneous mutation

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    A plant that produced more than one kernel in many of its florets was isolated from breeding material. The condition was found to be transmitted in monogenic fashion as a recessive character. Transmission of the mutation through the egg cells...
  10. Relations between phosphorus retention parameters and some other properties of benchmark soils in Lesotho

    Relations between phosphorus retention parameters and some other properties of benchmark soils in Lesotho

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    The benchmark soils of Lesotho are characterized by high P retention and this aspect should be accommodated in fertilization programmes. This together with long procedures for determination of P retention parameters and a lack of information on the relations between...