Selection on leaf ecophysiological traits in a desert hybrid Helianthus species and early-generation hybrids.
Ludwig F, Rosenthal DM, Johnston JA, Kane N, Gross BL, Lexer C, Dudley SA, Rieseberg LH, Donovan LA. Selection on leaf ecophysiological traits in a desert hybrid Helianthus species and early-generation hybrids. Evolution. 2004 Dec; 58(12):2682-92.