Embryosac Development of‘‘‘‘ Tosa-Buntan‘‘‘‘ Pummelo [Citrus grandis (L.) Osb. ] and Generational Chromosome in Somatic Cells Cytological study of backcross plants Chinese Spring ph1b mutant with different Aegilops by common wheat STUDIES ON OBTAINING TRIPLOIDS BY COLCHICINE TREATING FEMALE FLOWER BUDS OF WHITE POPLAR Isolation of Viable Male and Female Gametes in Cunninghamia lanceolata