Studies on the Pollen Xenia of Castanea henryi EFFECT OF RADIATION ON FRUIT POLLEN GERMINATION AND DISTANT HYBRIDIZATION COMPATIBILITY Anatomical Study of Fruit Setting and Male and Female Gametophytes in Pyrus ussuriensis Comparative Study of Fruit-setting Characteristics of Distyly Arnebia euchroma (Boraginaceae) Plants INFLUENCE OF VARIETIES AND FRUIT-SETTING TO PHOTOSYNTHETIC PROPERTIES AND FRUIT QUALITY OF MUSKMELON Effects of several regulation measures on change of endogenous hormones in terminal bud at flowering stage and the flower-formation and fruit-setting of Longan