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观察了芸苔属４个种（黑芥、甘蓝型油菜、芥菜型油菜和埃塞俄比亚芥）间杂种Ｆ＿１花粉母细胞减数分裂中期Ｉ染色体的配对行为，结果表明，芥菜型油菜×黑芥、埃塞俄比亚芥×黑芥、芥菜型油菜×埃塞俄比亚芥、芥菜型油菜×甘蓝型油菜和甘蓝型油菜×埃塞俄比亚芥Ｆ１杂种分别平均表现出９．７７Ｉ＋８．０３Ⅱ＋０．０３Ⅲ、８．８２Ｉ＋８．０２Ⅱ＋０．０５２Ⅲ，２．５６Ｉ＋１４．９８Ⅱ＋０．３９Ⅲ＋０．３３Ⅳ（Ⅴ），１４．１７Ｉ＋１１．１５Ⅱ＋０．１３３Ⅲ＋０．０２７Ⅳ和１５．４２Ｉ＋１０．１４Ⅱ＋０．０８５Ⅲ＋０．０１４Ⅳ的构型。由此说明，在芸苔属Ａ、Ｂ和Ｃ染色体组之间，Ａ与Ｃ的同源性大于Ａ与Ｂ或Ｂ与Ｃ的同源性；同时，Ｂ染色体组对Ａ与Ｂ、Ａ与Ｃ及Ｂ与Ｃ之间的部分同源染色体配对关系没有影响。
The pairing behavior of the metaphase I chromosomes in hybrid F_1 pollen mother cells of four Brassica species (black mustard, Brassica napus, Brassica juncea and Ethiopian mustard) was observed. The results showed that the Arabidopsis Brassica napus × black mustard, Ethiopia Mustard x black mustard, mustard B. rapa × Ethiopian mustard, B. juncea × B. napus L. and B. napus × Ethiopia mustard F1 hybrids showed an average of 9.77I + 8.03II + 0.03III, 8.82I + 8.02II + 0.052III, respectively. 56I + 14.98II + 0.39III + 0.33IV (V), 14.17I + 11.15II + 0.133III + 0.027IV and 15.42I + 10.14II + 0.085III + 0.014IV. Thus, the homology between A and C is greater than that of A and B or B and C between the Brassica A, B and C genomes. At the same time, the homology between A and B, A and B Partially homologous chromosome pairing between C and B and C had no effect.