2014/03/27 by Milt Haar, Haar, Milt, Adriaan van Aelst +3
Agricultural and Biological Sciences · #Biological Control of Invasive Species #FOS: Biological sciences #Plant and animal studies #Populations and Evolution (q-bio.PE) #Quantitative Methods (q-bio.QM) #Weed Control and Herbicide Applications
paper · pdf · doi:10.48550/arxiv.1403.7096
openalex publication_date 2014/03/27 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
Giant foxtail (Setaria faberi) seeds differ in requirements for germination. Variable germinability arises during seed development under the influence of genotype, environment and parent plant. Giant foxtail seed germination has been shown to be regulated by independent asynchronous or dependent synchronous action of seed structures. To gain better insight into the process, germination was divided into axis specific embryo growth categories or states. Three states were defined for each embryonic axis. The degree of embryo growth (germination state) after eight to twelve days under germination conditions is believed to reveal the germinability state (potential for germination) possessed by the seed before germination. The embryo axes behave independently, which allows any combination of germination states to occur. In general, the greater the difference in germination between the axes, the less likely the combination of states will occur. Photographic evidence of each germination state is shown for caryopses and seed. Seed with a variety of germinability states is a strategy for surviving variable environments.