Essays about: "pollen analysis"

Showing result 1 - 5 of 46 essays containing the words pollen analysis.

  1. 1. System ecology of legumes mixes in ley production : impact on pollinating insects and further implications for production in northern Sweden

    University essay from Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

    Author : Philippe Simon; [2023]
    Keywords : Ley production; Nitrogen fixation; Pollination ecology;

    Abstract : The population and diversity of pollinating insects in Europe are declining, partly due to lossof habitat. In agricultural landscapes, farming practices with more intensified land use haveincreased. In Swedish agricultural habitats, most ley production is dominated by grass and red clover (Trifolium pratense). READ MORE

  3. 2. Pollen identification using sequencing techniques

    University essay from Högskolan i Skövde/Institutionen för biovetenskap

    Author : Bimaljeet Kaur; [2022]
    Keywords : pollen; rbcL gene; barcoding; metabarcoding; Sanger sequencing; MinION sequencing;

    Abstract : Palynology or the study of pollen, is essential understand the relationship between plants and their pollinators. Traditionally, pollen grains are identified by microscopy. The method has several shortcomings, such as being time-consuming and having low taxonomic resolution. READ MORE

  4. 3. Ancient plant cuticle chemistry: preservation and characterization of organic matter as biomarker of past UV-B radiation

    University essay from KTH/Kemi

    Author : Larissa Lopes Cavalcante; [2021]
    Keywords : UACs; fossil cuticle; p-coumaric acid; ferulic acid; UV-B proxy; micro-FTIR; confocal Raman microscope; UAF; fossil kutikula; p-kumarinsyra; ferulinsyra; UV-B-proxy; mikro-FTIR; konfokalt Raman-mikroskop;

    Abstract : Biologiska processer hos olika organismer påverkas av ultraviolett-B-strålning (UV-B). Kunskapen om förändringar i UV-B-flödet som nått planetens yta under det geologiska tidsspann sedan flercelligt liv uppstod är dock begränsad. READ MORE

  5. 4. Endosperm-based postzygotic hybridization barriers in Arabidopsis and Capsella

    University essay from SLU/Dept. Of Plant Biology

    Author : Mohammad Foteh Ali; [2021]
    Keywords : Endosperm development; Parental conflict; Genetic diversity; Auxin;

    Abstract : In Arabidopsis, endosperm development is very important for viable seed development. Especially, endosperm cellularization is a crucial event for embryo survival and if it fails, can lead to embryo arrest, as observed in seeds derived from interploidy and interspecies hybridization. READ MORE

  6. 5. Järnets flora – en undersökning av vegetationsutvecklingen vid Röda Jorden

    University essay from SLU/School for Forest Management

    Author : Gunnar Abrahamsson; Jonathan Abrahamsson; [2021]
    Keywords : flora; holocen; pollenanalys;

    Abstract : Röda Jorden är ett kulturhistoriskt besöksområde i Skinnskattebergs kommun. På platsen finns förhistoriska järnframställningslämningar som daterats till 700 år före vår tideräkning. Idag finns en aktivitetsplats som drivs av Riddarhyttans Hembygds- och intresseförening, ”RHI”. READ MORE