Temperature effects on germination and growth of redroot pigweed (Amaranthus retroflexus), Palmer amaranth (A. palmeri), and common waterhemp (A. rudis)

By P. Guo, K. Al‐Khatib. Weed science, 2003

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Interference of Palmer Amaranth (Amaranthus palmeri) in Sweetpotato (2010, background): “Though often regarded collectively as ‘‘pigweeds,’’ Amaranthus species differ greatly in growth parameters including germination, seed production, height, biomass, and leaf area (Bensch et al. 2003; Guo and Al-Khatib 2003; Horak and Loughin 2000; Sellers et al. 2003).”
QTLs for chlorophyll and chlorophyll fluorescence parameters in barley under post-flowering drought (2008, background): “Fm - Fo) and maximum/potential quantum efficiency of PSII (Fv/ Fm), have been widely used for such investigations in various plants under diverse growth conditions (Araus et al. 1998; Guo and Li 2000; Guo and Al-Khatib 2003; Fracheboud et al. 2004).”
Soybean Canopy and Tillage Effects on Emergence of Palmer Amaranth (Amaranthus palmeri) from a Natural Seed Bank (2009, background): “High temperatures ($ 25 C mean) and thermal amplitudes ($ 7.5 C) favor germination of Palmer amaranth and other pigweeds (Guo and Al-Khatib 2003; Steckel et al. 2004; Wright et al. 1999).”