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以埃塞俄比亚芥(2n=4x=BBCC=34)和芥蓝(2n=2x=CC=18)为材料,通过相互杂交获得了异源三倍体(2n=3x=BCC=26)。该异源三倍体生长势较强;叶色等介于双亲之间;株型、花型和花大小偏向于埃塞俄比亚芥;花色与芥蓝的相同,为白花。减数分裂观察表明:在终变期,一般形成9个二价体和8个单价体(9Ⅱ+8Ⅰ),且B、C两组染色体表现出一定程度的分群现象;中期Ⅰ,CC基因组的9个二价体排列在赤道板上,而B组的8个单价体游离在赤道板周围;后期Ⅰ分到两极的染色体以13/13和12/14占多数,偶见落后的染色体。该BCC异源三倍体的获得为创建CC+B染色体的异附加系和研究B、C基因组间的亲缘关系奠定了基础。
Allo-triploid (2n = 3x = BCC = 26) was obtained by hybridization with Ethiopian mustard (2n = 4x = BBCC = 34) and Chinese kale (2n = 2x = CC = 18). The heterotetraploid growth potential strong; leaf color and other intervening parents; plant type, flower size and flower size tend to Ethiopian mustard; flower and Chinese kale the same as the white flower. Meiotic observation showed that at the final stage, 9 bivalent and 8 monovalent (9Ⅱ + 8Ⅰ) were generally formed, and chromosomes B and C showed a certain degree of clustering; metaphase Ⅰ, CC genomic Nine bivalents were arranged on the equatorial plate, while eight monovalent groups in group B were free around the equatorial plate. The chromosomes from late stage Ⅰ to bipolar were mostly 13/13 and 12/14, with occasional backward chromosomes. The BCC heterotubes obtained for the creation of CC + B chromosome addition system and study B, C genomes laid the foundation for the relationship between.