Southern pollen sired more seeds than northern pollen in southern seed orchards established with northern clones of Pinus sylvestris - Pulkkinen, P.; Varis, S.; Pakkanen, A.; Koivuranta, L.; Vakkari, P.; Parantainen, A. (My University, 2009)
Keywords: kilpailu; kontaminaatio; menestyminen; siitepöly