论文部分内容阅读
从1994 年起,通过杂交、回交、测交等方法,对CMS恢复系选育后代中出现的具有桔红花色的变异株R18 进行了遗传分析。结果表明,该变异株系的桔红花色性状属于隐性突变,受2 对隐性核基因控制,其花色性状能随配子有性传递,但携有隐性桔红花色基因的雄配子生活力较低,在各花色分离世代中,桔红花色分离株低于理论预测值。由于该材料的桔红花色能够稳定遗传,性状特征明显,可作为恢复系纯度鉴别的理想标记性状。
From 1994 onwards, the genetic variation of R18 with the reddish-brown color appearing in the offspring of CMS restorer line was analyzed by crossing, backcrossing and cross dating. The results showed that the magenta flower color traits of the mutant lines were recessive mutations, which were controlled by two recessive nuclear genes and their flower color traits could be transmitted sexually with gametes. However, the male gametes carrying recessive anthocyanin genes Lower vitality, in the various color separation generation, anthocyanidin isolates below the theoretical predictions. Because of its stable inheritance of the orange flower color, the material can be used as an ideal marker to identify the purity of restorer lines.