Wongpiyasatid, Arunee, and Praparat Hormchan. “New Mutants of Perennial Portulaca grandiflora Through Gamma Radiation”. Agriculture and Natural Resources 34, no. 3 (September 30, 2000): 408–416. accessed September 17, 2026. https://li01.tci-thaijo.org/index.php/anres/article/view/240339.