“…Stimulatory effects on pollen germination and tube growth by low‐dose IR have been documented for diverse gymnosperm and angiosperm species (Chauhan and Katiyar, 1998; Chauhan and Katiyar, 1990; Lecuyer et al, 1991; Livingston and Stettler, 1973; Møller and Mousseau, 2017; Pandey and Kumar, 2013; Seibold et al, 1979; Yigit et al, 2009; Zelles and Seibold, 1976), reviewed in (Stephan, 2021) (Figure 1A). Corresponding to pollen, radiation hormesis has also been reported regarding performance of sporophytic plant tissues, in particular seed germination, seedling growth, root growth, flag leaf area, photosynthetic rate, stomatal conductance, and plant nutrition (Abdel‐Hady et al, 2008; Kim et al, 2005; Maity et al, 2005; Marcu et al, 2013; Nayak et al, 2015; Qi et al, 2015; Singh and Datta, 2010b; Singh and Datta, 2010a; Thapa, 2004; Zanzibar and Sudrajat, 2016; Fornalski et al, 2012).…”