Cross Compatibility Among Different Cultivars of Actinidia chinensis Planch Cross Compatibility Among Different Cultivars of Actinidia chinensis Planch Preliminary study on the breeding system of Lycium barbarum STUDIES ON THE MECHANISM OF RICE GLUME-OPENNING Ⅰ.EFFECTS OF TEMPERATURE ON GLUME-OPENNING AND POLLEN VITALITY OF RICE Comparative Study on Methods for Testing Pollen Viability of the Six Species from Genus Rhododendron