Randy Koster

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Pollen-stigma interactions were studied with scanning electron microscopy in intraspecific and intersectional crosses of Populus tremuloides (Sect. LEUCE); P. deltoides, P. nigra (Sect. AIGEIROS); and P. trichocarpa (Sect. TACAMAHACA). Intraspecific variation in hydration, size of hydrated pollen grains, and tube morphology is described. Exine sculpture in(More)
We studied the repeated effect of sterilisation on light intensity in laryngoscopes from Penlon, Riester, Heine (two different blades), Medicon and Upsher. Light intensity was measured by a light meter using two methods. Measurements were performed before the decontamination procedure was carried out and subsequently after each series of 25 procedures until(More)
Ž . Sixteen land-surface schemes participating in the Project for the Intercomparison of Land-surface Schemes PILPS Ž . Ž . Phase 2 c were run using 10 years 1979–1988 of forcing data for the Red–Arkansas River basins in the Southern Great Ž . Plains region of the United States. Forcing data precipitation, incoming radiation and surface meteorology and(More)
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