摘 要 :通过系统对比分析 ABD、AB、AG 等类型小麦与中间偃麦草杂交后 F_1的减数分裂资料确认中间偃麦草没有与小麦 B 组同源的染色体组。减数分裂染色体 N 带分析进一步证实了这一点。以目前研究来看,中间偃麦草染色体组型以有两组彼此部分同源,另一组与它们远缘为宜,建议以字母 NNiX 代之。
Abstract:A systematical study was made on meiotic chromosome configurationof hybrids between hexaploid wheats(AABBDD),tetraploid wheats(AABB),(AAGG) and E.intermedia.Bivalent numbers of the hybrids F_1 in PMC MI were 6.24 Ⅱ/cell,4.55 Ⅱ/cell and 4.52 Ⅱ/cell respectively.Bivalent number of(tetraploid wheat(