Chromosomal Location of the Excellent Genes in Thinopyrum elongatum and its Application MAN MADE TRITICEAE GENOMES BY CHROMOSOME RECOMBINATION Ⅰ.PRELIMINARY EXPERIMENTS AND POSSIBILITIES Structural Mutations and Reorganizations in Chloroplast Genomes of Flowering Plants Fifteen novel universal primer pairs for sequencing whole chloroplast genomes and a primer pair for nuclear ribosomal DNAs