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一、油菜品种根据细胞质与细胞核育性基因的分类作者根据油菜胞质雄性不育系与日本国内品种(品系)测交后,其杂种二代群体以及正反回交的杂种一代群体的分离情况,并采用花药与柱头的相对位置、花药大小、花瓣宽度等性状为指标来判断育性表现程度.然后将实际的分离比例和预计分离比例加以比较,考察各测交品种(品系)的细胞质与细胞核所属的性质.作者从试验中初步得出油菜品种细胞质与细胞核分类如附表所示.油菜品种与雄性不育系持有同样不育细胞质(S细胞质)的为S群品种.相反地,持有正常细胞质的品种为N群品种.
First, the rapeseed varieties based on cytoplasmic and nuclear fertility gene classification According to the rapeseed male sterile line and Japan domestic varieties (lines) after the test, the hybrids of the second generation and the backcross progenies hybrid population segregation , And the relative position of anther and stigma, anther size, petal width and other traits as indicators to determine the degree of fertility performance.And then the actual separation ratio and the expected separation ratio were compared to examine the measured varieties (lines) of the cytoplasm and The nature of the nucleus belongs to the author from the experiment preliminary rape varieties of cytoplasm and nucleus classification as shown in the table.Rapeseed varieties and male sterile lines hold the same sterile cytoplasm (S cytoplasm) for the S group.Contrary, The species that holds the normal cytoplasm is a N-group variety.