Description:
RSD1978003PL003 X RSD1978004PL004 (= 78-3-3 X 78-4-4); controlled pollination of P sylvestris at USDA-IDRS, Brawley, Calfiornia, made by C Corbett under direction of JB Carpenter. Controlled pollination made in order to propagate P sylvestris for move to CVARS (since no offshoots produced by P sylvestris). See RSD 1978003 and RSD 1978004 for more information on parent trees.