Studies on Compatibility of Interspecific Hybridization Between Iris lactea Pall. var. chinensis Koidz. and I. sanguinea Hormen. Incompatibility of Citrus grandis‘Duweimiyou’and Its Biological Effects by Different Kinds of Pollination Incompatibility of Citrus grandis‘Duweimiyou’and Its Biological Effects by Different Kinds of Pollination Studies on Compatibility of Interspecific Hybridization Between Iris lactea Pall. var. chinensis Koidz. and I. sanguinea Hormen.