【摘要】 对小麦21个单体材料的终变期或中期Ⅰ的单价染色体进行了N带分析,有9个材料的单价体显示出了带纹。这9个材料是单体1B至7B、单体4A和7A。它们的带纹同根尖有丝分裂中相应染色体的带纹相一致。此法简便快速,给小麦单体系统的细胞学鉴定提供了新途径;它给小麦杂种染色体组分析(genome analysis)也可能提供一种更精确的手段。更多还原

【Abstract】 N-banding analysis has been used to identify the univalents of all 21 monosomics at diakinesis or metaphase I. The univalents of nine wheat monosomics which are monoso- mic lB to 7B, 4A and 7A have shown distinctive N-banding patterns. These banding pat- terns appear to be identical in meiotic and mitotic chromosomes. The method is simple and speedy. The research probably provides a new way for cytological identification of mono- somics in wheat and offers a technique for genome analysis of hybrids in wheat.更多还原